SOHO RAID SR2000
User’s Manual
P/N: P99649
Version: 2.0
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Chapter 1 Introduction
SR2000 SOHO RAID (Redundant of Array Independent
Drives) provides disk mirror function for the internal RAID
Level 1 for small offices or home offices. SR2000 SOHO
RAID is an excellent low-cost, high-efficiency substitute for
expensive RAID Level 5 and low-efficiency magnetic tape as a
back up.
1-1 Functions and Features
ꢀ The two hard disks can simultaneously perform mirroring
with synchronization.
ꢀ One of the two hard disks can function as source, and the
other as target for back up purpose.
ꢀ Providing on-line rebuild function.
ꢀ Hot plug to replace damaged HDD without interrupting
system.
ꢀ Support for IDE interface.
ꢀ Alarm for HDD failure.
ꢀ System maintains normal performance when any HDD is
damaged.
ꢀ Supports most PC Operating Systems (OS), no drivers
required.
ꢀ Hot plug to EIDE connector without interface card.
ꢀ Compatible with most HDD.
ꢀ LCD screen showing HDD operating status.
ꢀ Status Indicator for HDD "reading" or "writing" modes.
ꢀ High power fan to prevent overheating.
ꢀ High quality stainless handle (SUS 302) for Removable
Carrier.
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1-2 Product Specifications
ꢀ System Specifications
Host Interface
Ultra ATA
RAID level
1
Installation Space
HDD Interface
2 x 5-1/4” Expansion Bay
EIDE
HDD Selection Mode
Overheating prevention
ꢀ Environmental Conditions
Operating Temperature
Master/Slave
6cm Ball Bearing Fan
0℃~55℃
Non operating Temperature
ꢀ Power
Input Voltage (DC)
ꢀ Reliability
MTBF
-20℃~70℃
+5V, +12V
＞250,000 Hours
ꢀ Dimensions
Measures (mm)
Weight
146(W)X238(D)X85(H)
1.5 Kg(HDD excluded)
CE Certificate
ꢀ Safety
1-3 System Requirements and support
ꢀ Hardware Requirements
1. Intel based IBM compatible PC (Pentium III, Pentium
II, Pentium MMX/Pentium, or 100% compatible).
2. HDD with standard EIDE/IDE Interface.
3. 2 x 5-1/4” Expansion Bay.
4. One 4-pin DC power socket outlet.
5. Supports all I/O chips, except ITE IT8680F-A I/O chip.
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ꢀ Supports the Following OS (no drivers required)
DOS, Windows NT Server, Workstation, Windows
98/95/3.1x, NetWare**3.12/4.1x/5.x, SCO UNIX,
LINUX (RedHat Slackware, Debian, S.U.S.E.,
OPENLinux, TURBOLinux), Free BSD, IBM OS/2,
Solaris 2.x.
1-4 Note (Read carefully before using SR2000)
1. Use two identical hard disks (same brand name and model)
for optimum performance and greatest convenience.
2. To obtain optimum performance, use two brand new hard
disks or hard disks in perfect conditions without any
damaged sectors.
3. Use hard disks with a minimum capacity of 3.2GB Ultra
DMA 33/66.
4. Easy to use with hard disks manufactured by QUANTUM,
IBM, MAXTOR, or Western Digital. (see Chapter 6
Certified HDD for SR2000)
5. Whether it is the upper or lower deck, please set up both
Hard Disks in SR2000 to MASTER mode. (Drive Mode:
HDD Factory Default), or else HDD won’t be detected.
6. If replacing an old HDD with a new one, please purchase
the same brand and choose a disk capacity greater than or
equal to the original one.
7. SR2000 will automatically format a new HDD. No need to
use FDISK or FORMAT. Use the Auto-Rebuild Function
or manual Back Up to copy data to the new target HDD.
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8. Normal HDD mode for SR2000 is Ultra DMA. In the
event of failure to work with EIDE connector, HDD will
automatically configure itself in PIO mode 4 or with lower
speed.
9. There is a 6mm Ball Bearing Fan integrated in the SR2000
to prevent overheating for 7200 rpm HDD. When two
7200rpm Hard Disks are installed in a very busy server,
we suggest adopting a PC case with optimal design for
overheating prevention in order to avoid PC or RAID
crashes.
10. In case of power failure during the Auto-Rebuild
Function, controller will remember the rebuilding
progress percentage and carry on the operations when the
power is restored.
11. In case of power failure during Back up, restart Back up
when power is restored.
12. Under normal conditions, set Operation Mode Switch to
NORMAL position, or else your PC will not detect the
SR2000 and it will have to be reset.
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Chapter 2 Installation
2-1 Package Contents
Your SR2000 SOHO RAID package includes the
following: please contact our distributors in case of any
missing or damaged items.
Item
Quantity
SR-2000
1
Removable Carrier 2
User's Guide
1
Accessories bag
1 (including 8 x 6#-32 screw
and 8 x M3×6 screw )
SR2000
User's Guide
Accessories
bag
Removable
Carrier
Removable
Carrier
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2-2 Part Description
ꢀ Front Panel
Buzzer On/Off
Switch
System Access LED
Upper deck HDD
Access LED
Lower deck HDD
Access LED
Buzzer On/Off
Access LED
Lock/Unlock Switch
SUS 302 Handle
DC 12V Fan
Buzzer On/Off switch:
Alarm functions when buzzer switch is on. To release the function, please
push the button. Push the button again to recover the function.
LED displays Red when buzzer switch is Off.
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ꢀ Inside the SR2000
Operation mode
switch
LCD Panel
Controller
Select button
Upper Deck
Removable
Carrier
Lower Deck
Removable
Carrier
ꢀ Back Panel
EIDE Controller
Master/Slave
Jumper
DC Power Socket Outlet
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2-3 How to open/close the front panel
ꢀ Opening the front panel
1. Touch the right side center of the front panel with your
finger as indicated by the arrow. There is a trigger to
open the panel.
Press
ꢀ Closing the front panel
1. Turn the panel in the direction indicated by the arrow to
connect it with the trigger until it clicks inside, which
means the front panel is closed.
Turn
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2-4 How to remove/insert the Removable Carrier
ꢀ Removing the Removable Carrier
1. Following the indicated direction, press down and hold
the Removable Carrier Handle to unlock the spring
from its button.
2. Turn the Removable Carrier Handle in the direction
indicated by the arrow to remove the Removable
Carrier.
3. Pull out the Removable Carrier along the direction
shown in the figure.
1
1. Push in
2. Turn
3. Pull out
2
3
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ꢀ To insert the Removable Carrier
1. Following the direction indicated by the arrow, slide
the Removable Carrier along the rail into the slot end of
the upper or lower deck.
2. Following the direction indicated by the arrow, turn the
Removable Carrier Handle to the end in order to fix it
with the spring.
1. Push in
2. Turn to the end
2.
1.
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2-5 Installing HDD in the Removable Carrier
ꢀ Set Master/Slave jumpers to MASTER (factory default).
ꢀ Connect the power cord and the Removable Carrier’s
EIDE/IDE interface cable to the HDD.
ꢀ Inset the HDD into the Removable Carrier.
ꢀ Fasten the HDD with the attached 6#-32 screws in their
four locations. Place the power cord and the EIDE/IDE
interface cable lower than the surface of the HDD in order
to avoid any hindrance when taking out the HDD. Please
refer to the following illustration.
6#32 –
4 screws
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2-6 Installing the SR2000 in your Computer
ꢀ Turn the power off.
ꢀ Make sure there are two 5-1/4" Expansion bays available
for the SR2000.
ꢀ Set up MASTER or SLAVE positions of SR2000
according to your needs. (Factory default: Master). If you
need to set it to SLAVE, please modify the jumpers on the
back panel of the SR2000.
ꢀ Remove computer case and insert the SR2000 into the
Expansion bay.
ꢀ Connect power cord and EIDE/IDE interface cable to the
right connector.
ꢀ Fasten SR2000 at four places with attached M3×6mm
screws, according to the following illustration.
ꢀ Replace and fasten computer case.
M3x6 mm
8 pcs
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Chapter 3 RAID Use
ꢀ After proper installation, the SR2000 can be considered
as one HDD.
ꢀ Both FDISK and FORMAT commands have the same
function on the two Hard Disks inside the SR2000.
ꢀ Some OS can perform self partitioning and formatting
without going through the above mentioned process.
ꢀ After turning PC power on, SR2000’s two hard disks
maintain synchronized operation unless one of them stops
working.
3-1 Factory Default
ꢀ Buzzer On/Off switch
ON
ꢀ Operation Mode Switch
ꢀ MASTER/SLAVE JUMPER
NORMAL
MASTER
3-2 Installation
ꢀ Installing two new Hard Disks in Auto-Rebuild mode
1. Push the switch on the right side center of the SR2000
to open its front panel. (Refer to Section 2-3 How to
open/close the front panel)
2. Insert two Removable Carriers into the SR2000. (HDD
assembled) (Refer to Section 2-4 How to remove/insert
the Removable Carrier.)
3. For handling convenience, open the panel as wide as
possible. Set Operation Mode Switch to NORMAL on
the upper right corner of controller.
4. Turn the power on. In the BIOS setting screen, change
HDD type to AUTO. This will enable the computer
system to automatically detect the type and model of
your Hard Disks.
5. After restarting the computer, the SR2000 will
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automatically format HDD synchronously. In addition,
it will install the OS and other required software.
(Refer to OS Installation Guide)
6. When the two installed hard disks have different
capacities, SR2000 will auto detect and set the capacity
according to the smaller one. This way your Computer
will suppose that the SR2000 has a smaller capacity.
ꢀ Installing one new HDD in Auto-Rebuild mode
1. Locate the original HDD in either the upper or lower
deck of SR2000.
2. In the event of no HDD inside, SR2000’s buzzer begins
to sound after computer is started. To switch off the
alarm, use a sharp pointed object to turn off the buzzer
on the front panel. The Access LED on the lower part
of the panel will be on. (Note 1)
3. After loading the OS, insert the Removable Carrier with
the new HDD into the upper or lower deck of the
SR2000. The capacity of the new HDD should be equal
to or greater than the original one.
4. Wait a few minutes, after which the SR2000 will
automatically perform the Auto-Rebuild function.
(Refer to Chapter 4 Automatic Rebuild Function).
5. After the Auto-Rebuild, use a sharp pointed object to
turn on the buzzer on the front panel. The Access LED
on the lower part of the panel will be off. (Note 2)
ꢀ Hot plug and data on-line rebuild
1. In the event of any installed HDD’s operation failure,
the SR2000 buzzer will sound. Pull out the Removable
Carrier together with the damaged HDD without
turning the power off.
2. PC will continue normally to store data into the other
HDD; no data loss will happen.
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3. First follow the reverse order of the steps described in
Section 2-5 Installing HDD in Removable Carrier to
remove the damaged HDD, and then replace it with a
new HDD.
4. Insert the Removable Carrier with the new HDD into
the SR2000.
5. Wait a moment. The SR2000 will automatically
perform rebuild function on the new HDD. (Refer to
Chapter 4 Automatic Rebuild Function)
6. Use a sharp pointed object to turn on the buzzer on the
front panel. The Access LED on the lower part of the
panel will be off. (Refer to Note 2).
7. After the rebuild process is over, any data on the newly
installed HDD will be overwritten.
Note1：Alarm functions when buzzer switch is "On".
Note2：Buzzer access LED displays red when buzzer
switch is "Off".
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Chapter 4 Automatic Rebuild Function (A.R.F.)
ꢀ A.R.F. supports Windows NT4.0 Server & Workstation,
Windows 98*/95*/3.1X, Dos 6.22, SCO UNIX System V,
Linux (RedHat, Slackware, Debian, S.u.S.E., OPEN,
Turbo), Novell NetWare** V3.12, V4.1X, V5.X.
ꢀ In most OS, the A.R.F. is performed in the background in
order to restore rapidly a HDD to its normal read/write
operation.
ꢀ When the A.R.F. runs under Windows 95/98 during active
DMA, if mouse operation or foreground response should
slow down, please close the DMA and start the A.R.F.
once again.
ꢀ Please choose optimal hardware and SR2000 compatible
OS. (Refer to Chapter 6 Certified HDD for SR2000).
ꢀ Please set Operation Mode Switch to NORMAL position
on the control panel before use.
ꢀ The HDD on the upper deck is designated as the Primary,
the one on the lower deck as the Secondary.
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4-1 Installing an extra HDD for rebuilding
ꢀ While the HDD with data is on the upper deck of the
SR2000, start the computer. The computer will
automatically detect the HDD on the lower deck of the
SR2000. In case of abnormal operation, the buzzer will
sound and the LCD will show the following:
Pri HDD： OK
Sec HDD：Fail
1. Insert a new HDD correctly on the lower deck of the
SR2000. Screen will display and buzzer will sound in
case of abnormal operation. If the HDD is properly set
up, the LCD will show the following:
Pri HDD： OK
Sec HDD： OK
2. A few seconds later, the LCD will show:
Rebuilding …
Pri → Sec XXX%
The data in the upper deck’s HDD will be rebuilt in the
lower deck’s HDD.
XXX%: Percentage completed, ranging from 0~100.
3. When the rebuild is completed, LCD will show:
Pri HDD： OK
Sec HDD： OK
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ꢀ While data is in the HDD on the upper deck of the SR2000,
start up the computer. The computer system will
automatically check the status of the HDD on the upper
deck of the SR2000. In case of failure, the buzzer will
sound and the LCD will show the following:
Pri HDD：Fail
Sec HDD：OK
1. Set up a new HDD on the lower deck of the SR2000. If
the HDD is properly set up, the LCD will show the
following:
Pri HDD： OK
Sec HDD： OK
2. A few seconds later, the LCD will show:
Rebuilding …
Sec → Pri XXX%
The data in the lower deck’s HDD will be rebuilt in the
upper deck’s HDD.
XXX%: Percentage completed, ranging from 0~100.
3. When the rebuild function is completed, the LCD will
show:
Pri HDD： OK
Sec HDD： OK
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4-2 LCD display showing HDD status
ꢀ Disk on the upper deck (Primary Disk): Fail
Disk on the lower deck (Secondary Disk): OK
Pri HDD：Fail
Sec HDD：OK
ꢀ Disk on the upper deck (Primary Disk): OK
Disk on the lower deck (Secondary Disk): Fail
Pri HDD：OK
Sec HDD：Fail
ꢀ Disk on the upper deck (Primary Disk): Fail
Disk on the lower deck (Secondary Disk): Fail
Pri HDD：Fail
Sec HDD：Fail
ꢀ Disk on the upper deck (Primary Disk): OK
Disk on the lower deck (Secondary Disk): OK
Pri HDD：OK
Sec HDD：OK
ꢀ Primary Disk capacity > Secondary Disk capacity
Wrong Capacity
PRI > SEC
ꢀ Secondary Disk capacity > Primary Disk capacity
Wrong Capacity
SEC > PRI
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Chapter 5 Manual Back Up
ꢀ Manual back up shall be performed from the upper deck
(SOURCE) to the lower deck (TARGET). Do not invert
the sequence.
ꢀ Target HDD can be a brand new or an unformatted HDD.
ꢀ Open the front panel during use, set Operation Mode
Switch to BACK UP position in the upper right corner of
control panel. (Press down)
ꢀ Insert the SR2000 into your computer. Turn the power on.
If you have an external SR2000, insert DC power plug
into the outlet on the back panel of SR2000.
ꢀ No interface card is required for computer connection.
ꢀ When the yellow HDD Access LED on the front panel is on,
system enters BACK UP mode. Follow the instructions
displayed on the LCD for options and operations.
ꢀ BACK UP mode won’t be completed unless you turn the
power off, Shortcut keys will be ineffective during the
BACK UP process.
ꢀ BACK UP Procedure
1. When the SR2000 is turned on, the LCD will show its
model name and version number as follows:
SR2000
SOHO RAID Rev200
2. The SR2000 will auto detect the installation of Hard
Disks. When the Source HDD capacity is larger than
the Target one, the LCD will alternately display the two
screens below and the Buzzer will sound; please turn
off the power and start your PC again.
Wrong Capacity
Please Check!
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Turn off power
3. After confirmation, the LCD will display options for
BACK UP Mode and the cursor will blink and display
“F.” Use key selector to choose File, Sector, or Auto
mode. Every time you press the selector key, cursor
will move to next mode and blink; cursor sequence is
F→S→A→F.
4. Press down SELECT key for 5 seconds to enter the
selected mode.
Copy Mode?
File Sector Auto
5. SR2000 will confirm the selected mode. Cursor blinks
and displays “Y” Select YES or NO with Key selector.
Every time the SELECT key is pressed, cursor moves
to the next option in the sequence Y→N→Y. When the
selected mode is confirmed, press down SELECT key
for 5 seconds to enter the selected option.
Ready to start ?
Yes / No
6. If "No" is selected, the LCD will show the following to
confirm operation, If "Yes" is selected, refer to next
sections.
Copy Aborted !
Continue/Quit
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7. If " Continue" is selected, it will go back to the screen
indicated by step 4 as follows.
Copy Mode?
File Sector Auto
8. If "Quit" is selected, Buzzer will alarm; please turn off
the power and start PC again.
Copy Aborted !!!
Turn Off POWER
5-1 File Copy
ꢀ Supports FAT, FAT32, and NTFS (DOS, WINDOWS
3.1X/95/98/NT).
ꢀ In COPY mode, it will copy all files from the Source Disk
and system to the Target Disk, included every partition,
boot sector, MBR, and FAT.
ꢀ File Copy ignores blank sectors and only copies data
sectors.
ꢀ In this mode, a smaller capacity disk’s content can be
copied to another larger one. (If Target Disk is larger than
Source Disk)
ꢀ Should there be a difference in brand name, capacity, RPM,
Transmission rate (UDMA 33/66) between Source and
Target Disks, it is suggested to change one of them
temporarily.
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ꢀ File Copy Procedure
1. After entering File mode and starting operations, the
LCD will show the following:
Copy is being
processed…
2. A few seconds later, the LCD will show the completed
percentage of the process:
IIIII
1/N
XXX %
I: 1% is completed.
N: number of HDD partitions, ranging from 1~N.
XXX%: Percentage completed, ranging from 0~100.
3. The LCD will show the following after completing File
Copy:
Copy is done !!
The LCD will blink and the HDD Access LED on the
front panel will turn green.
4. To continue operations, please turn off the power and
start PC again.
5-2 Sector Copy
ꢀ Supports UNIX, LINUX, Free BSD, NetWare, and Mixed.
ꢀ For Sector Copy, use source disk and target disk of the
same brand name and model.
ꢀ Shouldn’t you have two identical disks, please use disks
with the same number of disk heads. (EX:an ordinary
HDD has 16 disk heads)
ꢀ On same specifications disks, copy by means of
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track-by-track and sector-by-sector.
ꢀ Average copy speed is 4~10 min/GB (or 6~15GB/hour,
according to HDD efficiency).
ꢀ Sector Copy is faster than the Auto-Rebuild Mode. (Back
Up mode operates at full speed in the SR2000, while
Auto-Rebuild operates in PC background).
ꢀ Sector Copy Procedure
1. After entering Sector mode and starting operation, the
LCD will show the following:
Copy is being
processed…
2. A few seconds later, the LCD will show the following:
I: 1% is completed.
IIIII
Wait!
XXX %
XXX: percentage completed, ranging from 0~100.
3. The LCD will show the following after Sector Copy is
completed:
Copy is done !!
The LCD will blink and the indicator on the front panel
will turn green.
4. To continue operations, please reset the SR2000.
5-3 Auto Copy
ꢀ Please refer to Section 5-2 Sector Copy for more details.
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5-4 Note
ꢀ After completing the copy mode above, it is necessary to
turn the power off and set Operation Mode Switch to
NORMAL position on the control panel in order to restart
your PC and restore RAID.
ꢀ In case of damage or improper insertion, the LCD will
display related error messages. Refer to Section 4-2 LCD
Display showing HDD Status.
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Chapter 6 Certified HDD for SR2000
Brand
Name
Model
No.
2100AT
3240AT
5100
Capacity
(GB)
2.1
Type
Note
SE
ST
3.2
5.1
6400
6.4
EX
CR
10200
12700A
4300A
6400A
8400A
6400A
10200A
13000A
34330
350640
10.2
12.7
4.3
6.4
8.4
Quantum
ATA66
6.4
CX
10.2
13.0
4.3
DHEA
6.4
DTTA 351010
371010
10.1
10.1
9.1
13.5
18.0
22.0
4.3
6.4
6.4
8.4
13.6
6.4
7200rpm
IBM
370910
371350
DJNA
7200rpm, ATA66
371800
372200
DTNA
90432D2
90648D3
26400
Maxtor
Western
Digital
AC
ST
28400
313620A
36421A
34321A
3091AH
3064A
ATA66
Seagate
Fujitsu
4.3
9.1
6.4
MPD
3043A
4.3
Remark: all of the above listed hard disks run in Ultra DMA mode 2 (33MB/sec) or mode 1.
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Chapter 7 Questions & Answers
Q1: Why is the computer system unable to reboot or
re-configure after SR2000 is installed?
A:1. SR2000 supports IDE I/O interface. However, it is
not compatible with motherboards building the ITE
IT8680F-A chip. Replace it with another I/O chip
compatible with the SR2000.
2. Check if IDE bus connector is connected properly.
3. Check if Operation Mode Switch is set to NORMAL
position on the control panel for copy mode.
Q2: What happens if power is shut down while the
SR2000 is running?
A:1. In case of power failure during the Auto-Rebuild
Function, controller will remember the rebuilding
progress percentage and carry on the operations
when the power is restored.
2. In case of power failure during BACK UP, copied
data will be incomplete and you will have to restart
BACK UP when power is restored.
Q3: What is the configuration for SR2000 (with 1 or 2
hard disks) when one HDD is already installed?
A:1. On the same IDE buses, set the jumper for SR2000 to
MASTER and the original disk to SLAVE.
Otherwise, the original HDD cannot be detected.
2. On different IDE buses, set MASTER or SLAVE for
SR2000 and original HDD respectively.
Q4: When using the SR2000, the computer system is
unable to read/write properly.
A:1. Check if IDE bus connector is inserted properly.
2. Check if IDE bus length is 46cm or 18”.
(Compliant to ATA 4 specification.)
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Q5: The buzzer alarm keeps sounding during SR2000
operation.
A: Check if both Removable Carriers (hard disks
installed) on the upper and lower decks are inserted
into the right position. Please refer to section 2-5
Installing HDD in Removable Carrier and section
2-4 Remove/insert Removable Carrier.
Q6: How to turn on/off the buzzer?
A:1. The factory default of the buzzer on/off switch is
ON.
2. Use a sharp pointed object to turn off buzzer alarm
on the front panel (Refer to Section 2-2 Part
Description)
3. Use a sharp pointed object to turn on buzzer alarm on
the front panel.
Q7: Why do the responses of the computer system slow
down when SR2000 is under rebuilding?
A:1. The performance of computer system is related to
CPU, motherboard design and peripherals. SR2000
can slow down PC performance.
2. To save time from new HDD installation, Manual
Back Up is suggested to rebuild data (This process is
not controlled by your PC system)
Q8: Is it possible to lose data or disable performance
when performing BACK UP in the SR2000?
A:1. To avoid data loss from overwriting on source disk,
make sure the source disk is on the upper deck, target
disk on the lower deck.
2. The capacity of the target disk must be larger than the
source disk.
3. Refer to Chapter 5 Manual Back Up.
4. Refer to Chapter 6 Certified HDD for SR2000.
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Q9: How is the HDD capacity configured when
replacing with a new disk?
A: 1. SR2000 is configured to the least capacity detected
when SR2000 is installed for the first time.
2. When larger capacity is replaced in SR2000, the
HDD capacity of SR2000 remains unchanged.
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APPENDIX
1. Although the SR2000 is structured to be compatible with
other HDD main brands, we will not be responsible for any
data loss resulting in any damages or defects.
2. The brand names and products used in this manual are
trademarks, registered trademarks, trade names of their
respective holders. Cremax is not associated with any vendor
or product mentioned in this manual.
3. Specification and feature is subject to change without notice.
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