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тАО02-11-2004 03:28 AM
тАО02-11-2004 03:28 AM
Or... even a compromise, anyone know where I can find the documentation needed to create raid groups on particular disks on the VA? I do not seem to be searching the ITRC or docs.hp.com for the correct phrases.
Thanks in advance.
Solved! Go to Solution.
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тАО02-11-2004 04:54 AM
тАО02-11-2004 04:54 AM
Re: setup VA7400 as JBOD
look here in the user and service guide:
http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentType=SupportManual&locale=en_US&docIndexId=179911&taskId=101&prodTypeId=12169&prodSeriesId=89018
I would think, that path redundancy has nothing to do with how the disks are organized.
Michael
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тАО02-11-2004 06:50 AM
тАО02-11-2004 06:50 AM
Re: setup VA7400 as JBOD
path redundancy is not considerable things.
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тАО02-11-2004 03:10 PM
тАО02-11-2004 03:10 PM
SolutionAs far as the path redundancy is concerned make sure that the disks are spread across different RAID groups (RG1 and RG2).
VA74xx enclosure can accomadate a toltal of 15 disks in the following manner.
Slot 1 to Slot 15 = 15 disks
Raid Group 1 = Slot 1 to Slot 8
Raid Group 2 = Slot 9 to Slot 15
-Karthik S S
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тАО02-11-2004 07:54 PM
тАО02-11-2004 07:54 PM
Re: setup VA7400 as JBOD
I mistook the description jbod in the manual for the VA7400 as indication, that it would support jbod. How many enclosures do you have? It still puzzles me, why it would not support that? Anyway I have been looking for some time to look for the software to programme it. What is used for that?
Michael
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тАО02-12-2004 03:05 AM
тАО02-12-2004 03:05 AM
Re: setup VA7400 as JBOD
I mentioned the cabling configuration since we were able to cripple the AutoRAID 12H on a different server by keeping it on a single SCSI chain. Wasn't sure if it was relevant with fibre.
Karthik, thanks for the pointer. I had it set up as RAID 0+1 and it does indeed take up more space than AutoRAID. The Virtual Array user and service guide (A6183-96005) I have indicates that RG1 = odd slots, RG2 = even slots. I am at firmware HP18. Is my information obsoleted?
Thanks for everyone's help so far.
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тАО02-12-2004 03:24 AM
тАО02-12-2004 03:24 AM
Re: setup VA7400 as JBOD
You're right about the numbering: rg1 -odd, rg2 -even.
You cannot use it as a JBOD.
For best performance I suggest:
For each VG, create a even number of Luns (half on rg1, the other half on rg2). Make sure that the primary link for the luns in rg1 goes through controller1 and rg2 goes through controller2. If not, use pvchange.
When creating the lvols, use the distributed option (-D y), for that you'll have to configure PVG (/etc/lvmpvg). All this is explained in man pages.
This way you'll have your I/O spreaded on your HBA's, switches and controllers.
Good luck,
Ricardo
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тАО02-13-2004 06:17 PM
тАО02-13-2004 06:17 PM
Re: setup VA7400 as JBOD
Sorry for misleading you and you are right about RG1 and RG2 slot numbering. By the way, the current firmware for the Array is HP19 and for the disks are
18GB Disks - HP10.
36GB disks - HP12.
-Karthik S S
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тАО02-16-2004 05:09 PM
тАО02-16-2004 05:09 PM
Re: setup VA7400 as JBOD
For path redundancy you need to mirror it , do not use autoraid or define LUN... so that u can identify every device.