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тАО09-03-2008 01:40 AM
тАО09-03-2008 01:40 AM
Re: MSA20 RAID 5 two identical drives
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тАО09-03-2008 01:53 AM
тАО09-03-2008 01:53 AM
Re: MSA20 RAID 5 two identical drives
Otherwise you have to monitor your system and manually swap the disk. You do have an unused disk lying around? Can you afford to run without RAID protection until a replacement part has been shipped to you?
(hot) spare or not. I've once read the definition that a 'hot' spare is already spinning while a 'simple' spare is not.
Unfortunately, different arrays use different terminology and these days disk drives are starting automatically anyway. By that definition, all spares are 'hot'.
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тАО09-03-2008 03:23 AM
тАО09-03-2008 03:23 AM
Re: MSA20 RAID 5 two identical drives
Stil one question left and that is why I see two new identical drives in Windows Explorer with the same amount of free space but different drive-letters. I just did a complete new configuration and deleted the old one. As soon as I assigned a drive letter to the logical drive in Disk Management the two drives became visible. In disk management only one disk is visible. Any explanation would be helpful.
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тАО09-04-2008 01:46 AM
тАО09-04-2008 01:46 AM
Re: MSA20 RAID 5 two identical drives
When opening properties I noticed that the server sees two logical volumes while only having one. I included a screenshot from this. It says that write caching is enabled. Could this be the reason, that the server created one drive for caching? Would that also be the reason that I cannot see the second drive (I) in disk management?
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тАО09-04-2008 02:28 AM
тАО09-04-2008 02:28 AM
Re: MSA20 RAID 5 two identical drives
Is there anything interesting in the Windows Event Log?
Can you attach the output from the following command as a text file (no Word document ;-), please?
+----
C:\>reg query HKLM\HARDWARE\DEVICEMAP\Scsi /s > scsi_%COMPUTERNAME%.txt
----
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тАО09-04-2008 06:07 AM
тАО09-04-2008 06:07 AM
Re: MSA20 RAID 5 two identical drives
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тАО09-09-2008 05:43 AM
тАО09-09-2008 05:43 AM
Re: MSA20 RAID 5 two identical drives
many thanks in advance!
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тАО09-11-2008 05:14 AM
тАО09-11-2008 05:14 AM
Re: MSA20 RAID 5 two identical drives
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тАО09-11-2008 05:40 AM
тАО09-11-2008 05:40 AM
Re: MSA20 RAID 5 two identical drives
There a two disks which are seen through the same controller port:
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\Scsi\Scsi Port 5\Scsi Bus 1\Target Id 0\Logical Unit Id 0
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\Scsi\Scsi Port 5\Scsi Bus 1\Target Id 1\Logical Unit Id 0
Can you open the device manager and use [View->Devices by connection]? This gives a hierarchical overview. I'll attach a picture with an example drill-down.
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тАО09-11-2008 05:52 AM
тАО09-11-2008 05:52 AM