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HP DL 160 RAID

Posted on 2009-07-02
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Last Modified: 2012-05-07
Hi,

I'm a bit confused - I have a HP DL 160 running 2003 R2 Std.  There are 4 160GB SATA disks installed, but in Disk Management I only see 2 listed. I want disks 2 & 3 to mirror disks 0 & 1, but how do I accomplish this?

I've installed the HP Storage manager software and this shows me that there are 4 Direct-attached devices on Ports 0 - 3 & 2 Logical Drives: Data & System. The devices on Ports 0 & 2 seem to be linked to the "System" Logical Disk and Ports 1 & 3 are linked to the "Data"logical disk.

I have a HP DL 360 server that does show mirrored drives in Disk Management, so I assume that's what I should see on the DL 160 as well?

Help!
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Question by:alec1836
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Expert Comment

by:noxcho
ID: 24767725
Can you take and post here the screen shot of Windows Disk Management?
Also, is there any hardware RAID1 configuration? This could explain why do you see only two 160GB drives.
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Author Comment

by:alec1836
ID: 24770855
Will do. It has an Embedded SATA RAID Controller - would this be a hardware RAID Controller then?
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Expert Comment

by:noxcho
ID: 24770925
Yes, could be. There are two possible reasons why you do see only two drives:
a)two other drives are faulty
b)four drives are set into to RAID configurations that actually do not increase the space but makes the configuration fault tolerance or increase the speed.
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Author Comment

by:alec1836
ID: 24770980
Here's some screen shots of Device Manager & HP Storage Manager. It looks like there is a Hardware RAID 1 setup. In which case I assume the Windows' Disk Management utility does not "see" the other 2 disks then?
Screen-1.jpg
Screen-2.jpg
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noxcho earned 500 total points
ID: 24771155
Ok, I was right. You have two RAID1 configurations on this server and thus you see only two drives in Windows Disk Management.
In case you need all four drives, backup both drives to network share and then remove RAIDs. Use the drives as a standalone drives and restore to two of them the backup images. Since then you should see 4 drives.
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Author Closing Comment

by:alec1836
ID: 31599274
Thanks noxcho. I rebooted the server & went into the Embedded SATA RAID setup & sure enough I could see that the drives were mirrored in there. Many thanks.
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