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4 Posts
0
2007
July 24th, 2013 01:00
Unallocated Disks
Hi
Hoping someone can help with this, we have a Clariion AX4-5 array, this has 4 disks which are being presented to 2 hosts running win 2003 and win 2008 server, from Navisphere everything looks ok, the disks are all visible and online, the problem is from the Windows Servers under disk management the disks are showing but are showing as Unallocated. Previoulsy they had been setup each with a different drive letter and would then be accessed from My Computer using the drive letter. I cannot find a way of allocating each one of these disks a drive letter. I need to be able to map each LUN with a different drive letter so it is then presented to the servers. Is there something obvious i am missing? any help would be appreciated.
Just to expand on this i cannot reformat the disks from Windows because the disks have data on that i want to keep, previously the disks where used in a cluster on an old domain, we now have a new domain and i want to make the disks visible.
Thanks
GraH1
4 Posts
1
July 31st, 2013 01:00
Thanks for all the replies, this can now be marked as answered, i believe the issue was infact that the LUNs i was presenting to the Hosts where either corrupt or had been wiped so where showing as Unallocated, when i added a known working LUN to the Storage group it appeared on the Host as expected. Thanks for the replies and suggestions.
kelleg
4.5K Posts
0
July 30th, 2013 14:00
In Disk Management are you seeing two disks for each LUN on the array? This may be due to the failover mode on the array for the paths - normally the failover mode should be set to 1 (active/passive) for Windows. Also, you should be using PowerPath - a version comes with the AX4.
If you are using Navisphere Manager look at Connectivity Status and check the Details for each path to see what the Failover Mode is set to.
Glen
DELL-Sheron G
Moderator
•
228 Posts
0
July 30th, 2013 15:00
this has 4 disks which are being presented to 2 hosts >> Hope u r referring to the logical drives ie, LUNS.
And we don't recommend to provide a LUN to two hosts ( not in cluster) as it will corrupt the LUN.
TimH
100 Posts
0
July 30th, 2013 20:00
Has this question been answered? Please update it and mark it answered if so.
Thank you.
Tim