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тАО09-15-2009 04:01 AM
тАО09-15-2009 04:01 AM
RAID 5 disk migration to MSA500
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тАО09-16-2009 07:27 AM
тАО09-16-2009 07:27 AM
Re: RAID 5 disk migration to MSA500
I've performed this in the past, with drives from the Smart Array 642 to the MSA500, loosely did this:
0. Backup and verify all data, rollback plan
1. Shut down server where the drives reside
2. Record the positions in the bays/drives
3. Move the whole group from the server to the disk shelf, one RAID group at a time
4. Power on the MSA500, let the controller detect and enable the array, may need input in the controller's display.
5. Present drives, verify data
Take a look at the MSA500 data sheet
http://h18004.www1.hp.com/products/quickspecs/11050_div/11050_div.HTML
----------------------------------
In addition to convertibility to the SAN, the Modular Smart Array 500 allows the seamless migration of stored data in ProLiant servers protected by Smart Array PCI controllers to a Modular Smart Array 500 system. Data that is currently stored on 1" Universal disk drives using HP Smart Array controllers, as well as data on an RA4100 can easily be migrated to the Modular Smart Array 500. Simply remove the drives from the older systems and insert them into the Modular Smart Array 500. Existing data and configuration will remain intact. In addition, the RAID set and data will be preserved allowing migration to be completed in minutes, not hours.
-----------------------------------
Hope it helps,
Albatross
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тАО09-16-2009 09:36 AM
тАО09-16-2009 09:36 AM
Re: RAID 5 disk migration to MSA500
However, as I'm writing this, something has just dawned on me that you might be able to confirm: I'm a little unclear as to whether the array configuration is stored in the controller's nvram or on the disks themselves or both. Does the MSA500 have to be connected to the same server with the controller that currently has the configuration information? My initial attempt was with another server because I was concerned about keeping a fallback position in case it didn't work. Perhaps this is the very reason it failed.
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тАО09-16-2009 10:04 AM
тАО09-16-2009 10:04 AM
Re: RAID 5 disk migration to MSA500
If I remember correctly, the metadata is stored in the drives, so the whole group may be transported between servers, in the very same order it was installed in the original controller.
As a suggestion, I'd do a controller firmware upgrade in both disk controllers (SA and MSA) *before* moving the drives to the MSA in order to update or refresh the array metadata.
The fact that both controllers are in the same system should not be a problem, but you might remove the SA before trying to boot and recognize the volume in the MSA (unless the the SA is working as the "HBA" communicating with the MSA500 OR the SA is running another volumes in the server)
Hope it was somewhat clear,
Cheers,
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тАО09-17-2009 02:12 PM
тАО09-17-2009 02:12 PM
Re: RAID 5 disk migration to MSA500
Clear enough, thanks. The MSA f/w is already up to date. I've updated the f/w for the SA5i that apparently does act as a HBA as near as I can tell. My next window of opportunity for the migration isn't for another 10 days or so. I'll post a result here then.
John
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тАО03-19-2010 02:58 PM
тАО03-19-2010 02:58 PM
Re: RAID 5 disk migration to MSA500
Note: Three drives are inserted in same order as like old server.
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тАО03-19-2010 05:59 PM
тАО03-19-2010 05:59 PM
Re: RAID 5 disk migration to MSA500
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тАО03-22-2010 01:18 AM
тАО03-22-2010 01:18 AM
Re: RAID 5 disk migration to MSA500
If you move drives from 1 Smart Array controller to another it should work strait away. Even if you get the positions mixed up.
A few basics, you need to beware of:
when you're messing with disk's you're always taking a risk.
A good backup, recovry and fall back plan, is a must.
Smart Arry controllers are data compatible, but not driver comaptible, between generations.
So if you are moving from one generation to another, you need to install the driver first.
This is an offline operation = Power down both machines.
All information aboute, the RAID setup, status, disk positions, is stored in the ris area on the disks as metadata.
All information is copied to all disks.
And it is time stamped.
If you want to put an array from machine 1 in machine 2, along with excisting array you might get a conflict.
if you use ADG/RAID 6, do ensure that the new controller support it.
Also ensure that the new controller got same FW level or newer.
If you get the posistions mixed up, the SA will prompt you to confirm (Press F1)
BR
/jag
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тАО03-22-2010 02:25 PM
тАО03-22-2010 02:25 PM
Re: RAID 5 disk migration to MSA500
I somehow need to get the data from this raid partition. Please let me know if there is any other way to recover my data.
Thanks
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тАО03-22-2010 02:32 PM
тАО03-22-2010 02:32 PM