DELL SC180 User Manual1

Dell Storage Center  
SC180 Expansion Enclosure  
Owner's Manual  
Regulatory Model: E11J  
Regulatory Type: E11J001  
Contents  
About this Guide.......................................................................................................5  
3
4
Preface  
About this Guide  
This guide describes how to perform service and maintenance on an SC180 expansion enclosure.  
Revision History  
Document Number: MV429  
Revision  
Date  
Description  
A00  
March 2015  
Initial release  
Audience  
The information provided in this Owner’s Manual is intended for use by Dell end users.  
Contacting Dell  
Dell provides several online and telephone-based support and service options. Availability varies by  
country and product, and some services may not be available in your area.  
To contact Dell for sales, technical support, or customer service issues go to www.dell.com/support.  
For customized support, enter your system Service Tag on the support page and click Submit.  
For general support, browse the product list on the support page and select your product.  
Related Publications  
The following documentation is available for the SC180 expansion enclosure.  
Dell Storage Center SC180 Expansion Enclosure Getting Started Guide  
Provides information about an SC180 expansion enclosure, such as installation instructions and  
technical specifications.  
Dell Storage Center Release Notes  
Contains information about new features and known and resolved issues for the Storage Center  
software.  
Dell Storage Center SCv2000 Series Virtual Media Update Instructions  
Describes how to install Storage Center software on an SCv2000/SCv2020 storage system using  
virtual media. Installing Storage Center software using the Storage Center Virtual Media option is  
intended for use only by sites that cannot update Storage Center using standard methods.  
Dell Storage Center Software Update Guide  
Describes how to upgrade Storage Center software from an earlier version to the current version.  
Dell Storage Center Command Utility Reference Guide  
5
         
Provides instructions for using the Storage Center Command Utility. The Command Utility provides a  
command-line interface (CLI) to enable management of Storage Center functionality on Windows,  
Linux, Solaris, and AIX platforms.  
Dell Storage Center Command Set for Windows PowerShell  
Provides instructions for getting started with Windows PowerShell cmdlets and scripting objects that  
interact with the Storage Center via the PowerShell interactive shell, scripts, and PowerShell hosting  
applications. Help for individual cmdlets is available online.  
Dell Storage Client Administrator’s Guide  
Provides information about the Dell Storage Client and how it can be used to manage a Storage  
Center.  
Dell Enterprise Manager Administrator’s Guide  
Contains in-depth feature configuration and usage information  
Dell TechCenter  
Provides technical white papers, best practice guides, and frequently asked questions about Dell  
6
1
About the SC180 Expansion Enclosure  
An SC180 expansion enclosure provides expansion storage for an SCv2080 storage controller.  
The SC180 connects directly to the SAS ports on the back of the storage system.  
SC180 Expansion Enclosure Overview  
The SC180 is a 5U SAS expansion enclosure that supports up to 84 internal 3.5inch hard drives installed  
in a twodrawer, threerow, 14column configuration.  
The SC180 expansion enclosure ships with two redundant power supply units, five redundant cooling  
fans, and two redundant Enclosure Management Modules (EMMs).  
SC180 Expansion Enclosure Monitoring and Diagnostics  
The Storage Center OS generates alert messages for temperature, I/O module, fan module, disk, and  
power conditions for Storage Center components. Use the Dell Storage Client to view these alerts.  
The SC180 also has LED indicators to notify you of a possible problem with the expansion enclosure.  
NOTE: Dell OpenManage Server Administrator is not available for the SC180.  
SC180 Expansion Enclosure Front-Panel Features and  
Indicators  
The SC180 front panel shows the expansion enclosure and power status.  
Figure 1. SC180 Front-Panel Features and Indicators  
About the SC180 Expansion Enclosure  
7
       
Item  
Name  
Panel  
Description  
1
Drawer-specific  
anti-tamper locks  
Locks the drawer shut using a Torx T20  
screwdriver until the red arrows point to the  
locked icon (away from the center of the  
chassis).  
2
Drawer-specific left  
and right side  
status indicators  
Sideplane OK/Power Good:  
Off — Sideplane card or cable fault  
Green — Sideplane card and cable are  
functional (though a fault may be  
indicated by one or more of the  
following LEDs)  
Drawer Fault: Amber — Sideplane card  
fault or drive failure causing loss of  
availability or redundancy  
Logical Fault:  
Amber (steady) — Host indicated drive  
fault  
Amber (flashing) — Arrays in impacted  
state  
Cable Fault: Amber — Cable fault  
3
Drawer-specific left  
and right side  
expansion  
Activity Bar Graph: Six variable-intensity  
LEDs dynamically displaying access of the  
drives in that specific drawer.  
enclosure activity  
indicators  
4
Status indicator for  
expansion  
enclosure  
Unit ID Display: A numerical display  
whose primary function is to display the  
unit identification number.  
Input Switch: Not currently used (though  
it can be used to set the Unit ID Display,  
the ID will be automatically reset by the  
Storage Center Operating System)  
Power On/Standby:  
Off — The expansion enclosure does  
not have power  
Green — The expansion enclosure is  
on (operational)  
Amber — The expansion enclosure is  
in standby (not operational)  
Module Fault: Amber when there is a  
hardware fault (additionally, an LED may  
be lit on a PSU, drawer, DDIC, fan  
module, or IO module indicating the part  
at fault)  
About the SC180 Expansion Enclosure  
8
Item  
Name  
Panel  
Description  
Logical Status: Amber when there is a  
change of status or fault from something  
other than the expansion enclosure itself  
(this may be from an external RAID  
controller or HBA, but is usually  
associated with a disk drive as indicated  
by its own fault LED)  
Drawer 1 Fault: Amber when a drive,  
cable, or sideplane fault has occurred in  
drawer 1  
Drawer 2 Fault: Amber when a drive,  
cable, or sideplane fault has occurred in  
drawer 2  
NOTE:  
Both drawer fault LEDs (and all contained  
DDIC LEDs) will flash when the expansion  
enclosure indicator is set to On in Storage  
Client.  
SC180 Expansion Enclosure Back-Panel Features and  
Indicators  
The SC180 back panel shows power, connectivity, and fault indicators.  
Figure 2. SC180 Back-Panel Features and Indicators  
About the SC180 Expansion Enclosure  
9
 
Item  
Name  
Icon  
Description  
1
Optional cable  
retention positions  
(4)  
Locations for optional cable retention brackets.  
2
Expansion  
Enclosure Modules  
(2)  
Each EMM contains SAS ports and status indicators.  
3
4
Cooling fans (5)  
Fans that provide cooling for the expansion enclosure.  
Power supply units  
(2)  
2.8 kW power supply that provides power for the expansion  
enclosure.  
5
6
Optional cable  
retention positions  
(4)  
Locations for optional cable retention brackets.  
Power switch (2)  
Controls power for the expansion enclosure. There is one  
switch for each power supply.  
SC180 Expansion Enclosure EMM Features and Indicators  
An SC180 expansion enclosure includes two Enclosure Management Modules (EMMs) in two Storage  
Bridge Bay (SBB) interface slots.  
Figure 3. SC180 EMM Features and Indicators  
Item  
Control/  
Feature  
Icon  
Description  
1
Fault LED  
Off — Module OK  
Amber — Module fault  
2
Power LED  
Green (steady) — Module OK  
Green (flashing) — Vital product data (VPD) fault  
Off: Module fault  
3
4
Console port  
SAS ports  
Not for customer use.  
Connect to the storage system  
About the SC180 Expansion Enclosure  
10  
 
Item  
Control/  
Feature  
Icon  
Description  
5
SAS port link  
status  
indicators  
Green (steady) — Connected, but no activity  
Green (flashing) — Connected plus activity  
Off — Not connected  
SC180 Expansion Enclosure Fan Module Features and Indicators  
SC180 expansion enclosures include five fan modules in five interface slots.  
Figure 4. SC180 Fan Module Features and Indicators  
Item  
Control/  
Feature  
Icon  
Description  
1
Release latch  
Module OK  
Press the release latch to remove the fan module.  
2
Green — Module OK  
3
Fan fault  
Amber — Loss of communication with the fan module, or  
reported fan speed is out of tolerance  
About the SC180 Expansion Enclosure  
11  
 
SC180 Expansion Enclosure PSU Features and Indicators  
SC180 expansion enclosures include two Power Supply Units (PSUs) in two interface slots.  
Figure 5. SC180 PSU Features and Indicators  
Item  
Control/Feature Icon  
Description  
1
Release latch  
PSU fault  
Press the release latch to remove the PSU.  
2
Amber (steady) — PSU fault, PSU not supplying  
power  
Amber (flashing) — PSU firmware is downloading  
3
4
AC fault  
Amber (steady) — AC power is not detected  
Amber (flashing) — PSU firmware is downloading  
Power OK  
Green (steady) — This PSU is providing power  
Green (flashing) — AC power is present, but this  
PSU is in standby mode (the other PSU is providing  
power)  
5
6
Power outlet  
Power switch  
Power outlet for the expansion enclosure.  
Controls power for the expansion enclosure.  
Separate and unique conditions are indicated if all three LEDs are in the same state:  
If all three LEDs are off, then there is no AC power to either PSU.  
If all three LEDs are on, then the General Enclosure Management (GEM) software has lost  
communication with the PSU.  
SC180 Expansion Enclosure Drives  
Dell Enterprise hard disk drives (HDDs) and Enterprise Solid-State Drives (eSSDs) are the only drives that  
can be installed in an SC180 expansion enclosure. If a non-Dell Enterprise drive is installed, Storage  
Center prevents the drive from being managed.  
Each drive is installed in Disk Drive In Carrier (DDIC) and each DDIC includes one status indicator.  
About the SC180 Expansion Enclosure  
12  
   
Figure 6. DDIC and Status Indicator  
Item  
Feature  
Indicator Code  
1
DDIC fault indicator  
Amber — Drive fault  
Amber (flashing) — Flashes in one second intervals when drive  
or enclosure indicator is set to On in Dell Storage Client. With  
the drive indicator, the containing drawer fault LED will also  
flash; with the enclosure indicator, all drives’ and both  
drawers’ fault LEDs will flash.  
About the SC180 Expansion Enclosure  
13  
2
Replacing SC180 Components  
This section describes how to remove and install components of an SC180 expansion enclosure.  
This document assumes that the customer has received the replacement component and is ready to  
install it.  
Safety Precautions  
Always follow these safety precautions to avoid injury and damage to Storage Center equipment.  
If equipment described in the document is used in a manner not specified by Dell, the protection  
provided by the equipment may be impaired. For your safety and protection, observe the rules described  
in the following sections.  
NOTE: See the safety and regulatory information that shipped with each Storage Center  
component. Warranty information may be included within this document or as a separate  
document.  
Installation Safety Precautions  
Follow these safety precautions:  
Dell recommends that only individuals with rack-mounting experience install an SC180 expansion  
enclosure in a rack.  
You need at least two people to lift the expansion enclosure chassis from the shipping box and three  
people to install it in the rack. The empty chassis weighs approximately 62kg (137 lbs).  
Make sure the expansion enclosure is fully grounded at all times to prevent damage from electrostatic  
discharge.  
When handling the expansion enclosure hardware, you should use an electrostatic wrist guard (not  
included) or a similar form of protection.  
The expansion enclosure chassis MUST be mounted in a rack; the following safety requirements must be  
considered when doing so:  
The rack construction must be capable of supporting the total weight of the installed chassis and the  
design should incorporate stabilizing features suitable to prevent the rack tipping or being pushed  
over during installation or in normal use.  
When loading a rack with chassis, fill from the bottom up; empty from the top down.  
To avoid danger of the rack toppling over, do not slide more than one chassis out of the rack at a  
time.  
The expansion enclosure must be operated with low-pressure rear exhaust installation [back pressure  
created by rack doors and obstacles not to exceed 5 Pascals (0.5 mm water gauge)].  
The rack design should take into consideration the maximum operating ambient temperature for the  
unit, which is 35°C.  
Replacing SC180 Components  
14  
     
Electrical Safety Precautions  
Always follow electrical safety precautions to avoid injury and damage to Storage Center equipment.  
WARNING: Disconnect power from the expansion enclosure when removing or installing  
components that are not hot-swappable. When disconnecting power, first power down the  
storage system using the Dell Storage Client and then unplug the power cords from all the power  
supplies in the expansion enclosure.  
Provide a suitable power source with electrical overload protection. All Storage Center components  
must be grounded before applying power. Make sure that there is a safe electrical earth connection to  
power supply cords. Check the grounding before applying power.  
The plugs on the power supply cords are used as the main disconnect device. Make sure that the  
socket outlets are located near the equipment and are easily accessible.  
Know the locations of the equipment power switches and the room's emergency power-off switch,  
disconnection switch, or electrical outlet.  
Do not work alone when working with high-voltage components.  
Use rubber mats specifically designed as electrical insulators.  
Do not remove covers from the power supply unit. Disconnect the power connection before  
removing a power supply from the expansion enclosure.  
Do not remove a faulty power supply unless you have a replacement model of the correct type ready  
for insertion. A faulty power supply must be replaced with a fully operational module power supply  
within 24 hours.  
Unplug the storage system chassis before you move it or if you think it has become damaged in any  
way. When powered by multiple AC sources, disconnect all supply power for complete isolation.  
Electrostatic Discharge Precautions  
Always follow electrostatic discharge (ESD) precautions to avoid injury and damage to Storage Center  
equipment.  
Electrostatic discharge (ESD) is generated by two objects with different electrical charges coming into  
contact with each other. The resulting electrical discharge can damage electronic components and  
printed circuit boards. Follow these guidelines to protect your equipment from ESD:  
Dell recommends that you always use a static mat and static strap while working on components in  
the interior of the storage system chassis.  
Observe all conventional ESD precautions when handling plug-in modules and components.  
Use a suitable ESD wrist or ankle strap.  
Avoid contact with backplane components and module connectors.  
Keep all components and printed circuit boards (PCBs) in their antistatic bags until ready for use.  
General Safety Precautions  
Always follow general safety precautions to avoid injury and damage to Storage Center equipment.  
Keep the area around the expansion enclosure chassis clean and free of clutter.  
Place any system components that have been removed away from the expansion enclosure chassis or  
on a table so that they are not in the way of foot traffic.  
While working on the expansion enclosure chassis, do not wear loose clothing such as neckties and  
unbuttoned shirt sleeves, which can come into contact with electrical circuits or be pulled into a  
cooling fan.  
Replacing SC180 Components  
15  
     
Remove any jewelry or metal objects from your body because they are excellent metal conductors  
that can create short circuits and harm you if they come into contact with printed circuit boards or  
areas where power is present.  
Do not lift a expansion enclosure chassis by the handles of the power supply units (PSUs). They are  
not designed to hold the weight of the entire chassis, and the chassis cover may become bent.  
Before moving a expansion enclosure chassis, remove the PSUs to minimize weight.  
Do not remove drives until you are ready to replace them.  
NOTE: To ensure proper expansion enclosure cooling, hard drive blanks must be installed in any  
hard drive slot that is not occupied.  
Pre-Replacement Procedures  
Perform the procedures described in this section before replacing a component of an SC180 expansion  
enclosure.  
Sending Diagnostic Data Using Dell SupportAssist  
Use Dell SupportAssist to send diagnostic data to Dell Technical Support Services.  
1. Click Send SupportAssist Data Now. The Send Support Assist Data Now dialog box appears.  
2. Select Storage Center Configuration and Detailed Logs.  
3. Click OK.  
Contacting Dell Technical Support Services  
Contact Dell Technical Support Services to let them know that you are performing a repair.  
Request that Dell Technical Support Services suspend alerts for the expansion enclosure and ask for a  
preinstallation system check.  
Shutting Down the Storage System and Expansion Enclosures  
If the replacement component is not hot-swappable, use the Dell Storage Client to shut down the  
storage system and expansion enclosures. Shutting down the storage system and expansion enclosures  
results in a system outage, so plan to perform these procedures during a maintenance window.  
1. Before shutting down the storage system and expansion enclosures, make sure you identify the  
failed part.  
2. From the Actions menu, select SystemShutdown/Restart. The Shutdown/Restart dialog box  
appears.  
3. Select Shutdown and click OK.  
4. When the storage system and expansion enclosures are shut down, switch off both power switches  
and unplug the power cables from the expansion enclosure.  
Replacing SC180 Components  
16  
       
Replacing PSUs  
The SC180 expansion enclosure supports two hot-swappable power supply units (PSUs). If one unit fails,  
the second unit continues to provide power to the expansion enclosure.  
Identifying the Failed PSU  
To determine which power supply unit (PSU) failed, use the Dell Storage Client.  
1. Click the Hardware tab.  
2. In the Hardware tab navigation pane, select the Storage Center.  
3. In the Hardware Alerts area, find the hardware alert that identifies the enclosure with the failed  
power supply.  
Figure 7. Hardware Alert Identifying the Enclosure with the Failed Power Supply  
4. In the Hardware tab navigation pane, expand the enclosure identified in the previous step.  
5. Select Power Supplies. The status of each power supply is displayed in the Power Supplies tab.  
6. Select the failed power supply. The location of the failed power supply is displayed in the Power  
Supply View tab.  
Replacing SC180 Components  
17  
   
Figure 8. Rear View of the Enclosure Showing the Failed the Power Supply  
Replacing a PSU  
Use this procedure to replace a failed power supply unit (PSU).  
Prerequisites  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
2. Contact Dell Technical Support Services to let them know that you are performing a repair.  
About this task  
You can replace power supply units one at a time without shutting down the expansion enclosure.  
Steps  
1. Press the power switch to turn off the PSU.  
2. Remove the power cable from the securing clip and disconnect the power cable from the PSU.  
3. Push the release tab on the PSU to the right and slide it out of the chassis using the handle.  
CAUTION: The PSUs are heavy. To avoid injury, use both hands while removing the module.  
Replacing SC180 Components  
18  
 
Figure 9. Removing a PSU  
1. Release tab  
2. Handle  
4. Slide the replacement power supply unit into the chassis until it is fully seated and the release tab  
clicks into place.  
5. Connect the power cable to the power supply unit and make sure the cable is plugged into a power  
outlet.  
6. Secure the power cable using the clip.  
Figure 10. Securing the Power Cable  
7. Press the power switch to turn on the PSU.  
Replacing SC180 Components  
19  
NOTE: Allow several seconds for the expansion enclosure to recognize the PSU and determine  
its status. When the PSU is functioning properly, the Power OK indicator turns green and the  
PSU fault and AC fault indicators are off.  
8. In the Dell Storage Client, make sure that the replacement PSU is recognized and shown as up and  
running.  
Next steps  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
2. Contact Dell Technical Support Services to let them know that you completed a repair.  
Replacing Cooling Fan Modules  
The SC180 expansion enclosure supports five cooling fan modules. If one cooling fan module fails, the  
remaining fan modules continue to cool the expansion enclosure.  
NOTE: When a cooling fan module fails, the fan speed in the remaining modules increases  
significantly to provide adequate cooling. The fan speed decreases gradually when a new cooling  
fan module is installed.  
Identifying the Failed Cooling Fan Module  
To determine which cooling fan module failed, use the Dell Storage Client.  
1. Click the Hardware tab.  
2. In the Hardware tab navigation pane, select the Storage Center.  
3. In the Hardware Alerts area, find the hardware alert that identifies the enclosure with the failed  
cooling fan.  
Figure 11. Hardware Alert Identifying the Enclosure with the Failed Cooling Fan  
4. In the Hardware tab navigation pane, expand the enclosure identified in the previous step.  
5. Select Cooling Fans. The status of each cooling fan is displayed in the Cooling Fans tab.  
Replacing SC180 Components  
20  
   
6. Select the failed cooling fan. The location of the failed cooling fan module is displayed in the Fan  
View tab.  
Figure 12. Rear View of the Enclosure Showing the Failed the Cooling Fan Module  
Replacing a Cooling Fan Module  
Use this procedure to replace a failed cooling fan module.  
Prerequisites  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
2. Contact Dell Technical Support Services to let them know that you are performing a repair.  
About this task  
You can replace cooling fan modules one at a time without shutting down the expansion enclosure.  
Steps  
1. Press the release tab and pull the fan module out of the chassis using the handle.  
CAUTION: The fan modules are heavy. To avoid injury, use both hands while removing the  
module.  
Replacing SC180 Components  
21  
 
Figure 13. Removing a Fan Module  
1. Fan module  
2. Release tab  
2. Rotate the replacement fan module so that the release tab and handle are on the right side.  
3. Slide the replacement fan module into the chassis until it is fully seated and the release tab clicks into  
place.  
NOTE: Allow several seconds for the enclosure to recognize the fan module and determine its  
status. When functioning properly, the fan module’s Module OK LED turns green and the  
Battery fault and Fan fault LEDs are off. In addition, the cooling fan status indicator turns green  
in the Dell Storage Client.  
4. In the Dell Storage Client, make sure that the replacement fan module is recognized and shown as  
up and running.  
Next steps  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
2. Contact Dell Technical Support Services to let them know that you completed a repair.  
Replacing SC180 Components  
22  
Replacing Hard Drives  
The SC180 expansion enclosure supports up to 84 3.5inch hotswappable hard drives installed in a two‐  
drawer, threerow, 14column configuration. Hard drives are connected to a backplane using Disk Drive in  
Carrier (DDIC) hard drive carriers.  
SC180 Expansion Enclosure Drive Numbering  
In an SC180 expansion enclosure the drives are installed in a twodrawer, threerow, 14column  
configuration.  
The drive slots are numbered 1–42 in the top drawer and 43–84 in the bottom drawer. Dell Storage  
Client identifies drives as XX-YY, where XX is the number of the unit ID of the expansion enclosure, and  
YY is the drive position inside the expansion enclosure.  
Figure 14. Hard Drive Drawers and Numbering  
1.  
Bottom drawer  
2.  
Top drawer  
Identifying the Failed Hard Drive  
To determine which hard drive failed, use the Dell Storage Client.  
1. Click the Hardware tab.  
2. In the Hardware tab navigation pane, select the Storage Center.  
3. In the Hardware Alerts area, find the hardware alert that identifies the enclosure with the failed hard  
drive.  
4. In the Hardware tab navigation pane, expand the enclosure identified in the previous step and select  
Disks. The status of each disk drawer is displayed in the Disks tab.  
5. Expand the drawer with the failed hard drive and select the failed hard drive. The location of the  
failed hard drive is displayed in the Disk View tab.  
Replacing SC180 Components  
23  
     
Figure 15. Inside Drawer View Showing the Failed Hard Drive  
Replacing a Hard Drive  
Use this procedure to replace a failed hard drive.  
Prerequisites  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
2. Contact Dell Technical Support Services to let them know that you are performing a repair.  
About this task  
Hard drives can be replaced one at a time without shutting down the expansion enclosure.  
Steps  
1. Find the SC180 and drawer containing the failed drive. The drawer fault LED will be lit.  
CAUTION: Before opening a drawer, ensure that the Dell Storage Client does not display a  
temperature warning. This issue needs to be rectified first to avoid potential drive failure and  
data loss.  
2. Push and hold both drawer latches toward the center of the drawer and pull the drawer all the way  
out until it stops.  
Replacing SC180 Components  
24  
 
Figure 16. Opening a DDIC Drawer  
1. Drawer latches (2 per drawer)  
2. Drawer (2 per chassis)  
CAUTION: If the SC180 operates for too long (depending on altitude) with drive drawers  
open, the enclosure can overheat, causing potential drive failure and data loss. Such use may  
invalidate the warranty.  
3. Find the failed DDIC by the lit LED.  
4. Press the release button to unlatch the DDIC.  
5. Wait about ten (10) seconds for the drive to spin down.  
6. Slide the DDIC up and out until it is free of the DDIC slot.  
Replacing SC180 Components  
25  
Figure 17. Removing a DDIC  
1. Drive fault LED  
3. DDIC  
2. Release button  
NOTE: Leave the drive in the carrier. The replacement drive will come in a carrier and  
attempting to remove the carrier can cause the carrier to break.  
7. Lower the replacement DDIC into the slot then push and hold the DDIC down while sliding it toward  
the back of the enclosure until the DDIC latches to the backplane.  
CAUTION: If the DDIC fails to latch, do not use it and request a replacement. If a faulty DDIC  
unlatches within a closed drawer, it can make the drawer unable to be opened.  
CAUTION: To maintain proper airflow, the drawers must be populated with drives in whole  
rows at a time (there are three rows of 14 drives per drawer). The minimum number of drives  
in an enclosure is 28 (one full, front row in the top drawer and one full, front row in the  
bottom drawer), the number of populated rows between drawers must not differ by more  
than one. Populate the rows from the front to the rear of the enclosure.  
Replacing SC180 Components  
26  
Figure 18. Closing a Drawer  
8. Close the drawer.  
a. Push and hold both drawer releases then push the drawer in slightly.  
b. Let go of the releases and push the drawer the rest of the way in until it clicks shut.  
9. In the Dell Storage Client, make sure that the replacement hard drive is recognized and shown as up  
and running. If the Dell Storage Client informs you that there are unassigned disks, see the Dell  
Storage Client Administrator’s Guide for instructions on managing unassigned disks.  
NOTE: Allow several seconds for the enclosure to recognize the hard drive and determine its  
status. When functioning properly, the hard drive indicator turns green in the Dell Storage Client  
and the LED on the DDIC is off.  
Next steps  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
2. Contact Dell Technical Support Services to let them know that you have completed a repair.  
Replacing an Enclosure Management Module  
The SC180 expansion enclosures support redundant hot-swappable Enclosure Management Modules  
(EMMs).  
EMMs provide the following data path and enclosure management functions for the expansion  
enclosure:  
Monitoring and controlling expansion enclosure environment elements such as temperature, fan,  
power supplies, and expansion enclosure LEDs  
Controlling access to hard drives  
Communicating expansion enclosure attributes and states to Storage Center  
Replacing SC180 Components  
27  
 
Identifying the Failed Enclosure Management Module  
To determine which EMM failed, use the Dell Storage Client.  
1. Click the Hardware tab.  
2. In the Hardware tab navigation pane, select the Storage Center.  
3. In the Hardware Alerts area, find the hardware alert that identifies the enclosure with the failed EMM  
(IO Module).  
Figure 19. Hardware Alert Identifying the Enclosure with the Failed EMM  
4. In the Hardware tab navigation pane, expand the enclosure identified in the previous step.  
5. Select I/O Modules. The status of each EMM is displayed in the I/O Modules tab.  
6. Select the failed EMM to the display its location in the I/O Module View tab.  
Replacing SC180 Components  
28  
 
Figure 20. Rear View of the Enclosure Showing the Failed EMM  
Replacing an Enclosure Management Module  
Use this procedure to replace a failed EMMs.  
Prerequisites  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
About this task  
EMMs can be replaced one at a time without shutting down the storage system.  
Steps  
1. Disconnect the SAS cables connected to the EMM.  
NOTE: Make sure all of the cables are labeled before disconnecting them from the EMM.  
2. Push the release tab to the right and pull the release lever away from the chassis.  
3. Grasp the release lever and pull the EMM away from the chassis.  
Replacing SC180 Components  
29  
 
Figure 21. Replacing an EMM  
1. EMM  
2. EMM release tab and lever  
4. Insert the replacement EMM into the bay until it is fully seated.  
5. Push the release lever toward the chassis until it clicks into place.  
6. Reconnect the SAS cables to the EMM.  
Next steps  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
Replacing Rack Rails  
Rack rails are used to install the SC180 expansion enclosure into a rack.  
Prerequisites  
1. Use SupportAssist to send diagnostic data to Dell Technical Support Services.  
2. Contact Dell Technical Support Services to let them know that you are replacing the rack rails.  
3. Shut down the expansion enclosure and expansion enclosure.  
About this task  
NOTE: Replacing rack rails must be performed during a scheduled maintenance window when the  
Storage Center system is unavailable to the network.  
Steps  
1. Remove the Hold Down Brackets (HDBs).  
Replacing SC180 Components  
30  
 
a. Remove the fixing screws from the rear of the expansion enclosure.  
b. Remove the HDBs from the rear of the rack.  
2. Remove the expansion enclosure from the rack rails.  
WARNING: Do not attempt to the lift the expansion enclosure by yourself. Always get  
assistance when lifting the expansion enclosure. If installed above the lower 20U of a rack, a  
customer-provided mechanical lift must be used to avoid injury.  
3. Remove the rack rails from the rack.  
4. Install the replacement rack rails in the rack.  
5. Install the expansion enclosure in the rack rails.  
6. Install the HDBs.  
7. Start up the storage system and expansion enclosure.  
Post-Replacement Procedures  
After replacing a component in the SC180 expansion enclosure, start up the SCv2080 storage controllers  
and the SC180 expansion enclosures if they were previously shut down, then use SupportAssist to send  
diagnostic data to Dell Technical Support Services.  
Start Up the Storage System and Expansion Enclosure  
If the storage system and expansion enclosure were previously shut down, perform this procedure to  
start them up.  
1. Plug the power cables into the PSUs of the storage system and expansion enclosure.  
2. Turn on the expansion enclosure by pressing the power switches on the PSUs.  
NOTE: Always turn on the expansion enclosure before turning on the storage system.  
3. Turn on the storage system by pressing the power switches on the PSUs.  
4. Use the Dell Storage Client to make sure the replacement part is recognized and shown as up and  
running.  
Sending Diagnostic Data Using Dell SupportAssist  
Use Dell SupportAssist to send diagnostic data to Dell Technical Support Services.  
1. Click Send SupportAssist Data Now. The Send Support Assist Data Now dialog box appears.  
2. Select Storage Center Configuration and Detailed Logs.  
3. Click OK.  
Contact Dell Technical Support Services  
Contact Dell Technical Support Services to let them know that you completed a repair, and request that  
they reenable alerts for the enclosure.  
Ask Dell Technical Support Services for a postinstallation system check.  
Replacing SC180 Components  
31  
       
3
Troubleshooting SC180 Components  
This section contains basic troubleshooting steps for components inside the SC180 expansion  
enclosures.  
Troubleshooting Fan Modules  
Use these steps to troubleshoot fan modules.  
1. Check the status of the fan module using the Dell Storage Client.  
2. Determine the status of the fan module LEDs.  
If the fan fault indicator is lit, the fan module has failed.  
3. Reseat the fan module by removing and reinstalling it.  
NOTE: Allow several seconds for the expansion enclosure to recognize the fan module and  
determine its status.  
Troubleshooting PSUs  
Use these steps to troubleshoot Power Supply Units (PSUs).  
1. Check the status of the PSU using the Dell Storage Client.  
2. Determine the status of the PSU LEDs.  
If the PSU fault indicator is lit, the PSU has failed.  
If the Power OK LED is not lit, check the power cord and power source into which the power  
supply is plugged:  
Connect another device to the power source and check whether the device works.  
Connect the power cord to a different power source.  
Replace the power cord.  
If the AC fault LED is lit, this PSU is not supplying power, though the other PSU may still be  
supplying power.  
3. Reseat the PSU by removing and reinstalling it.  
NOTE: Allow several seconds for the expansion enclosure to recognize the PSU and determine  
its status.  
Troubleshooting Disk Drives  
Use these steps to troubleshoot disk drives in carriers (DDICs).  
1. Check the status of the disk drive using the Dell Storage Client.  
2. Determine the status of the DDIC LED.  
If the DDIC fault LED is lit, the hard drive has failed.  
Troubleshooting SC180 Components  
32  
       
CAUTION: Confirm that the particular drive contains no user data. The Fault LED alone is  
not an indication the drive can be safely removed.  
If the DDIC fault LED is not lit, proceed to the next step.  
3. Check the connectors and reseat the DDIC.  
CAUTION: Perform this only on unmanaged drives or after you confirm that the particular  
drive contains no user data. The Fault LED alone is not an indication that you can safely  
remove the drive.  
a. Remove the DDIC.  
b. Check the DDIC and the backplane to ensure that the connectors are not damaged.  
c. Reinstall the DDIC. Make sure the DDIC contacts the backplane.  
Troubleshooting EMMs  
Use these steps to troubleshoot Enclosure Management Modules (EMMs).  
1. Check the status of the EMM using the Dell Storage Client.  
2. Check the pins and reseat the EMM.  
a. Remove the EMM.  
b. Verify that the pins on the backplane and the EMM are not bent. If any pins are bent, do not  
attempt to correct them, instead, contact Dell Technical Support Services for further instruction.  
c. Reinstall the EMM.  
3. Determine the status of the EMM power and fault LEDs. If the fault LED is lit, the EMM has failed.  
4. Verify link status. If the link status LEDs are not green, check the cables.  
a. Reseat the cables on the expansion enclosure and storage system.  
b. Recheck the link status LEDs. If the link status LEDs are not green, replace the cables.  
5. Reseat the EMM by removing and reinstalling it.  
NOTE: Allow several seconds for the expansion enclosure to recognize the EMM and determine  
its status.  
Troubleshooting SC180 Components  
33  
 
4
SC180 Technical Specifications  
This section contains technical specifications of the SC180 expansion enclosure.  
Technical Specifications  
The technical specifications of the SC180 expansion enclosure are displayed in the following tables.  
Drives  
SAS hard drives  
Up to 84 3.5-inch SAS hot-swappable hard drives (6.0 Gbps)  
Enclosure Management Modules (EMMs)  
EMMs  
Two hot-swappable IO modules  
Connectivity  
Configurations  
Storage Center supports up to 168 drives on a single redundant-path SAS  
chain  
An SCv2080 storage system supports one SC180 expansion enclosure  
Redundant Array of Independent Disks (RAID)  
Storage System  
Management  
SCv2080  
RAID management using Dell Storage Client version 2015 R1  
Back-Plane Board  
84 SAS hard-drive connectors  
Two sets of SBB connectors  
Connectors  
Five cooling fan module connectors  
Two power supply connectors  
Back-Panel Connectors (per EMM)  
Asymmetric SAS cabling for connecting an expansion enclosure to a  
storage system.  
SAS connectors  
Supports Mini-SAS HD to Mini-SAS cable universally keyed. The following  
lengths are currently supported:  
SCv2080 to SC180:  
0.5 m  
2 m  
SC180 Technical Specifications  
34  
   
Back-Panel Connectors (per EMM)  
3 m  
5 m  
NOTE: SAS connectors are SFF-8086/SFF-8088 compliant.  
LED Indicators  
One two-digit LCD indicator for Unit ID, error code, and unit location  
identifier  
Front panel  
One two-color LED indicator for power status  
One single-color LED indicator for module fault status (expansion  
enclosure as a whole)  
One single-color LED indicator for logical fault status (drive, HBA, RAID  
controller, and so on)  
One single-color LED indicator for drawer 1 fault status  
One single-color LED indicator for drawer 2 fault status  
One single-color LED indicator for sideplane card and power status  
One single-color LED indicator for drawer fault status  
One single-color LED indicator for logical fault status  
One single-color LED indicator for cable fault status  
Six single-color LED indicators for data transfer status  
Drawer  
One single-color LED for drive fault status  
Disk Drive In Carrier  
(DDIC)  
6 Gb SAS IO module  
14 one-color LED status indicators, four each for the three SAS ports and two  
for the module status  
One single-color LED indicator for module status  
Cooling module  
One single-color LED indicator for battery fault status (not currently used)  
One single-color LED indicator for fan fault status  
One single-color LED indicator for PSU fault status  
One single-color LED indicator for AC power fault status  
One single-color LED indicator for power status  
Power Supply Unit (PSU)  
Power Supplies  
AC power supply (per power supply)  
Wattage  
2.8 kW  
Voltage  
200–240 VAC (16 A)  
191-147 W  
Heat dissipation  
Input frequency  
Max input power  
Input current  
50/60 Hz  
1791 VA  
7.4 A@241 VAC  
SC180 Technical Specifications  
35  
Power Supplies  
Maximum inrush current Under typical line conditions and over the entire system ambient operating  
range, the inrush current may reach 55 A per power supply for 10 ms or less  
Available Hard Drive Power (per Slot)  
Supported hard drive  
power consumption  
(continuous)  
Up to 1.16 A at +5 V  
Up to 1.6 A at +12 V  
IO Card Power (per Slot)  
Maximum power  
11 W at +12 V  
consumed by IO Card  
Maximum available  
power  
100 W at +12 V  
1 W at +5 V (standby)  
Minimum available  
power  
Physical  
Height  
Width  
22.23 cm (8.75 inches)  
48.26 cm (19 inches)  
91.5 cm (36 inches)  
Depth (front mounting  
bracket to rear surface)  
Depth (front surface to  
rear surface)  
96 cm (38 inches)  
130 kg (287 lb)  
62 kg (137 lb)  
Full Weight (maximum  
configuration)  
Weight without drives  
Environmental  
NOTE: For additional information about environmental measurements for specific configurations,  
Temperature  
Operating  
5° to 35°C (41° to 95°F) with a maximum temperature gradation of 10°C per  
hour  
NOTE: Maximum 35°C up to 2134 m (7000 ft), derate to 30°C for 2134 m  
to 3000 m (7000 ft to 10,000 ft).  
Storage  
–40° to 70°C (–40° to 158°F) with a maximum temperature gradation of 20°C  
per hour  
Relative humidity  
SC180 Technical Specifications  
36  
Environmental  
Operating  
20% to 80% (noncondensing) with a maximum humidity gradation of 10% per  
hour  
Storage  
5% to 100% (noncondensing)  
Maximum vibration  
Operating  
0.21 G at 5–500 Hz for 15 min  
1.04 G at 2–200 Hz for 15 min  
Storage  
Maximum shock  
Operating  
Half-sine shock 5 G +/- 5% with a pulse duration of 10 ms +/- 10% in  
operational orientations only  
Z-axis: 30 g 10 ms half sine  
Storage  
X- and Y-axes: 20 g 10 ms half sine  
Altitude  
Operating  
–30.5 to 3000 m (–100 to 10,000 ft)  
NOTE: Maximum 35°C up to 2134 m (7000 ft), derate to 30°C for 2134 m  
to 3000 m (7000 ft to 10,000 ft).  
Storage  
–300 m to 12,192 m (–1000 ft to 40,000 ft)  
Airborne Contaminant Level  
Class  
G2 or lower as defined by ISA-S71.04-1985  
SC180 Technical Specifications  
37  

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