Reconfigure of raid-50 on PERC 5/E with OMSA 5.1

[Jens Dueholm Christensen]

Hi Patrick

 

Not the answer I had hoped for, but thanks for clearing that up.

 

Oh well.. I suppose I could always add 6 disks more to the MD1000, build another raid 50 virtual disk on those 6 disks, and then expand the lvm volumes onto that new virtual disk.

 

Alternativly I'd have to clear all data on the existing virtual disk (~2,7TB), create a new raid 50 set over 14 of the 15 disks and copy the data back, but would that give me any performance as to having 2 raid 50 sets?

 

On the paper a single 14 disk raid 50 set would probably be "cleaner" than one 8 disk raid 50 + another 6 disk raid 50 set, but would there be any reason (I really can't think of a compelling one) to move all the data just to accomplish that?

 

Regards,

Jens Dueholm Christensen

Rambøll Survey IT

________________________________

From: Patrick_Boyd at Dell.com [mailto:Patrick_Boyd at Dell.com] 
Sent: 28. januar 2008 16:20
To: Jens Dueholm Christensen; linux-poweredge at lists.us.dell.com
Subject: RE: Reconfigure of raid-50 on PERC 5/E with OMSA 5.1

 

The PERC 5's do not support reconfiguration of multi-level RAIDs (i.e. RAID 10 and 50).

 

From: linux-poweredge-bounces at dell.com [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Jens Dueholm Christensen
Sent: Monday, January 28, 2008 9:04 AM
To: linux-poweredge-Lists
Subject: Reconfigure of raid-50 on PERC 5/E with OMSA 5.1

 

Hi

 

I'm running out of space on my MD1000 (connected to a PE2950 with a PERC5/e controller) which is populated with 9 500GB SATA disks configured as 1 RAID-50 virtual disk with a global hot spare.

 

I've read in OMSA 5.1 (havn't upgraded to 5.3 on that system yet) documentation (http://support.dell.com/support/edocs/software/svradmin/5.1/en/omss_ug/html/vdmgmt.html#1295931) that it should be possible to do a reconfigure of the virtual disk, and thus add more physical disks to the virtual disk, but I cannot find 

 

"Select Reconfigure from the Available Tasks drop-down menu." as step 4 under "To locate this task in Storage Management:" mentions.

 

What can I do, and how can I expand the raid set?

 

The documentation mentions (http://support.dell.com/support/edocs/software/svradmin/5.1/en/omss_ug/html/vdmgmt.html#1233595) this:

 

---

Reconfiguring virtual disks. The Reconfigure task is not available when you have more than one virtual disk using the same set of physical disks. You can, however, reconfigure a virtual disk that is the only virtual disk residing on a set of physical disks. See "Virtual Disk Task: Reconfigure (Step 1 of 3)" for more information.

---

 

But as far as I can figure out I do not have more than 1 virtual disk, but the "Reconfigure" task is still missing.

 

I have 2 RAID-1 virtual disks in the same system where I can easily select the "Reconfigure" task in the drop-down menu, so the problem seems to be limited to the disks in the MD1000..

 

Regards,

Jens Dueholm Christensen 
Rambøll Survey IT

 

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