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replace failed drive raid 1 with bigger drive possible?

Posted on 2010-09-23
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Last Modified: 2013-11-14
I have a dell optiplex raid 1. One of the mirrored drives failed - making grinding noise and not working. other one fine
I cant get the same drive anymore - can i replace it with a larger one? - i know i  will lose the extra space but will the raid function normally after if bigger drive used?
And what is best way to backup the entire computer so if corrupts i can reinstall as was
thanks


System Information
Kit Installed: 8.9.0.1023
Kit Install History: 8.9.0.1023, Uninstall
Shell Version: 8.9.0.1023
OS Name: Microsoft Windows 7 Professional
OS Version: 6.1.7600 Build 7600
System Name: OFFICE
System Manufacturer: Dell Inc.
System Model: 0DN075
Processor: Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
BIOS Version/Date: Dell Inc. 2.6.0 , 05/19/2008
Language: ENU
Intel(R) Matrix Storage Manager
Intel RAID Controller: Intel(R) ICH7R/DH SATA RAID Controller
Number of Serial ATA ports: 4
RAID Option ROM Version: 5.6.2.1002
Driver Version: 8.9.0.1023
RAID Plug-In Version: 8.9.0.1023
Language Resource Version of the RAID Plug-In: 8.9.0.1023
Create Volume Wizard Version: 8.9.0.1023
Language Resource Version of the Create Volume Wizard: 8.9.0.1023
Create Volume from Existing Hard Drive Wizard Version: 8.9.0.1023
Language Resource Version of the Create Volume from Existing Hard Drive Wizard: 8.9.0.1023
Modify Volume Wizard Version: 8.9.0.1023
Language Resource Version of the Modify Volume Wizard: 8.9.0.1023
Delete Volume Wizard Version: 8.9.0.1023
Language Resource Version of the Delete Volume Wizard: 8.9.0.1023
ISDI Library Version: 8.9.0.1023
Event Monitor User Notification Tool Version: 8.9.0.1023
Language Resource Version of the Event Monitor User Notification Tool: 8.9.0.1023
Event Monitor Version: 8.9.0.1023
Array_0000
Status: No active migrations
Hard Drive Data Cache Enabled: Yes
Size: 1397.2 GB
Free Space: 0 GB
Number of Hard Drives: 2
Hard Drive Member 1: ST3750640AS
Hard Drive Member 2: ST3750640AS
Number of Volumes: 1
Volume Member 1: ARRAY
ARRAY
Status: Degraded
System Volume: Yes
Volume Write-Back Cache Enabled: No
RAID Level: RAID 1 (mirroring)
Size: 698.6 GB
Physical Sector Size: 512 Bytes
Logical Sector Size: 512 Bytes
Number of Hard Drives: 2
Hard Drive Member 1: ST3750640AS
Hard Drive Member 2: ST3750640AS
Parent Array: Array_0000
Hard Drive 0
Usage: Array member
Status: Failed
Device Port: 0
Device Port Location: Internal
Current Serial ATA Transfer Mode: Generation 2
Model: ST3750640AS
Serial Number: 3QD0SNCY
Firmware: 3.ADG
Native Command Queuing Support: Yes
Hard Drive Data Cache Enabled: Yes
Size: 698.6 GB
Physical Sector Size: 512 Bytes
Logical Sector Size: 512 Bytes
Number of Volumes: 1
Volume Member 1: ARRAY
Parent Array: Array_0000
Hard Drive 1
Usage: Array member
Status: Normal
Device Port: 2
Device Port Location: Internal
Current Serial ATA Transfer Mode: Generation 2
Model: ST3750640AS
Serial Number: 3QD0TDGW
Firmware: 3.ADG
Native Command Queuing Support: Yes
Hard Drive Data Cache Enabled: Yes
Size: 698.6 GB
Physical Sector Size: 512 Bytes
Logical Sector Size: 512 Bytes
Number of Volumes: 1
Volume Member 1: ARRAY
Parent Array: Array_0000
Unused Port 0
Device Port: 1
Device Port Location: Internal
Unused Port 1
Device Port: 3
Device Port Location: Internal
 screen shot failed raid screen shot failed raid
0
Comment
Question by:bhinz
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17 Comments
 
LVL 5

Expert Comment

by:darrylka
ID: 33746826
You should be able to replace the drive with one larger than the others in the array.  The RAID controller will only use what it needs from the larger drive.
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Accepted Solution

by:
Joseph Daly earned 167 total points
ID: 33746858
You can replace the drive with a larger drive as well as a faster one. We have several dell servers using raid where they have sent us mismatched drives. The raid firmware will only match the drive to what currently exists in the raid group.
0
 
LVL 47

Expert Comment

by:dlethe
ID: 33746961
Yes, as others have said .. but another important caveat, make sure the disk is qualified from dell for the controller, and is supplied from dell (or reseller), so it has proper firmware on it.  Just any larger and/or faster disk won't work.  (Unless you want to risk data loss)
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Expert Comment

by:Lee W, MVP
ID: 33747036
You asked about backup - use the built in Windows 7 backup.  Just did a backup and restore at a client using it - worked great.
0
 

Author Comment

by:bhinz
ID: 33747386
i will try windows 7 backup - do you reboot clean system with windows disc then restore ? - or can you run backup directly from boot disk

As for Raid - it is not a dell server - just a dell optiplex 390 with the drives mirrored. I was hoping to just get a bigger seagate - whatever available local computer store and use - if it needs to be specific firmware  i guess best just order from dell online using my service tag
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Author Comment

by:bhinz
ID: 33747424
sorry correction
it is a dell precision 390
0
 
LVL 95

Assisted Solution

by:Lee W, MVP
Lee W, MVP earned 166 total points
ID: 33747503
You perform a complete backup in Windows to another disk, when you restore, the disk (logical) must be of equal or greater size.  You restore by booting your Windows CD and then selecting the repair option - one of the subsequent options should be to restore from backup (I did this off a network and I believe it detected I had a backup and might want to restore it - but either way, it was pretty simple).
0
 

Author Comment

by:bhinz
ID: 33747611
i looked online with dell with the service tag - they dont have the identicle drives either.
i guess i could replace with two new drives and rebuild the raid new drives and restore from the backup.
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LVL 95

Expert Comment

by:Lee W, MVP
ID: 33747767
As has been said, you don't need identical drives.  You need drives that are EQUAL TO or GREATER THAN the original failed drive.
0
 
LVL 95

Expert Comment

by:Lee W, MVP
ID: 33747786
Just be careful, seemingly identical drives can be slightly different in terms of geometry - one 250 GB drive can be a few MB smaller than another... so make sure that the formatted capacity is greater than or equal to.
0
 
LVL 47

Expert Comment

by:dlethe
ID: 33748058
some controllers and ao OEM firmware has this built in fudge factor.  just call a human at dell and ask what to buy.  make them earn the price premium... they will take care of you. no need for a DIY educated guess.
0
 
LVL 47

Expert Comment

by:dlethe
ID: 33748117
this is yet another reason why OEM firmware is worth it.  many vendors tweak usable capacity to allow for painless vendor product subs.  
0
 
LVL 55

Assisted Solution

by:andyalder
andyalder earned 167 total points
ID: 33752808
It's just an Intel(R) ICH7R/DH SATA RAID Controller, you don't need OEM firmware on a disk for a fakeraid controller built into the chipset.
0
 

Author Closing Comment

by:bhinz
ID: 33755362
thanks for all help
seems bigger drive works and raid controller chipset correct
for reliability i wonder if safer to have same exact drive though
0
 
LVL 5

Expert Comment

by:darrylka
ID: 33755440
It doesn't change the reliability, and I believe I answered your initial question.
0
 

Author Comment

by:bhinz
ID: 33756390
oops - was a mistake when i assigned points must have clicked the second one - is there way to  change that
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LVL 5

Expert Comment

by:darrylka
ID: 33756468
I'm not sure.  Don't sweat it.
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