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тАО12-01-2010 05:51 AM
тАО12-01-2010 05:51 AM
RAID 5 Expansion
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тАО12-03-2010 08:52 AM
тАО12-03-2010 08:52 AM
Re: RAID 5 Expansion
1) From Array Configuration Utility, Extend the Array by adding new installed drives
2) Expand the logical Volume. Here is the ACU guide
http://h10032.www1.hp.com/ctg/Manual/c00709035.pdf
3) Once OS is able to see the space added, you can use diskpart at OS level to extend the volume.
http://support.microsoft.com/kb/325590
Also, RAID Rebuild/expansion/migration takes around 15 min per GB of data.
I hope it helps
Cheers!
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тАО12-03-2010 11:32 AM
тАО12-03-2010 11:32 AM
Re: RAID 5 Expansion
Sounding like new array config with disk image restores is best solution. was hoping to avoid that much downtime (it's SBS 2003 running Exchange etc.)
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тАО12-03-2010 09:26 PM
тАО12-03-2010 09:26 PM
Re: RAID 5 Expansion
In this case if you replace your drives with higher capacity, you will not be able to use extra space because this raid is not virtual, its physical.
So only two options for you:
1. If you have empty bays available then put higher capacity drives, create new array then logical drives and move the data from this array to newly created one. But I think you already have 6 drives populated so not possible in your environment.
2. Now you are left with one option, take backup of existing data and restore it to new array of higher capacity drives.
Note: The solution which you are talking about above of replacing one drive at a time is not feasible here but feasible in HP EVA Storage as it works on virtual raid.
BK
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тАО12-04-2010 01:54 PM
тАО12-04-2010 01:54 PM
Re: RAID 5 Expansion
Sounds a bit extreme if you ask me. Are the disks heavily utilized?
Replacing the disks one at the time, expanding the logical volume and then expanding the partition should work with the setup you have.
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тАО12-05-2010 03:49 AM
тАО12-05-2010 03:49 AM
Re: RAID 5 Expansion
Rebuild can take up to 15 min / GB.
Thtas worst case. Slow disk's, alto of them in a RIAD 5 or 6, And a busy controller.
On a ML350 G4, wit a Smart Array 641 and 3 x 36G 15RPM U320 Disk's in a RAID 5.
> 12 Minutes
The server was not highly loaded.
I would expect less than 1 hour per disk in your case.
If it is very busy, it could take longer.
In my oppinion, your choice is.
1. Extra security, and scheduled, long down time.
2. Mostly on-line. less secure.
Choise 1. Make the image. Shut down server. Remove disks. Install new disks. redeploy server.
here the security is, that if you get problems with the new installation. You can quickly revert to the old disks.
Down side is, you have got a longer down time.
Choise 2. Ensure you have got a good backup and emergency restore plan.
Replace disks 1 at the time.
Extend the logical disk, or create a new.
This is all on-line.
depending on what you want to do. You might have to take down the server for a few minutes, to extend the system/boot partition.
Depneds on OS and witch partition you need to extend.
BR
/jag
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тАО04-27-2011 02:05 AM
тАО04-27-2011 02:05 AM
Re: RAID 5 Expansion
http://www.dynamic-disk.com/resource/software-RAID-and-dynamic-disk-introduction.html
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тАО04-27-2011 05:27 AM
тАО04-27-2011 05:27 AM
Re: RAID 5 Expansion
With a few similar situations in the field, we may yet try the online/one at a time thing; but given that this was SBS running Exchange plus a couple SQL databases, I'd expect this machine would have been on the higher end of the 12 - 15 min/GB range. A week (or a few days or whatever it may have been to install one, await rebuild, install two, rebuild...etc. thru disk 6) seemed more stressful than a 1/2 day of weekend downtime knowing we'd still have Sunday to go back if we needed to punt. ;)
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тАО04-27-2011 05:28 AM
тАО04-27-2011 05:28 AM