Soho Computer Hardware SR2000 User Manual

SOHO RAID SR2000  
User’s Manual  
P/N: P99649  
Version: 2.0  
 
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.  
Note1Alarm functions when buzzer switch is "On".  
Note2Buzzer 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 HDDOK  
Sec HDDFail  
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 HDDOK  
Sec HDDOK  
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 HDDOK  
Sec HDDOK  
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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 HDDFail  
Sec HDDOK  
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 HDDOK  
Sec HDDOK  
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 HDDOK  
Sec HDDOK  
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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 HDDFail  
Sec HDDOK  
Disk on the upper deck (Primary Disk): OK  
Disk on the lower deck (Secondary Disk): Fail  
Pri HDDOK  
Sec HDDFail  
Disk on the upper deck (Primary Disk): Fail  
Disk on the lower deck (Secondary Disk): Fail  
Pri HDDFail  
Sec HDDFail  
Disk on the upper deck (Primary Disk): OK  
Disk on the lower deck (Secondary Disk): OK  
Pri HDDOK  
Sec HDDOK  
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  
FSAF.  
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 YNY. 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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SOHO RAID  
 
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.  
31  
SOHO RAID  
 

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