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тАО09-21-2006 01:46 AM
тАО09-21-2006 01:46 AM
Mixing HDD sizes on MSA1000
My Question: Is this an acceptable configuration and procedure?
Note: Once the SQL DB is backed-up to the NEW Array B, Array A will then also be upgraded with 300GB drives, then the data restored to the new drives from Array B. End result: All drives on MSA1000 being 300GB.
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тАО09-21-2006 02:39 AM
тАО09-21-2006 02:39 AM
Re: Mixing HDD sizes on MSA1000
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тАО09-21-2006 02:48 AM
тАО09-21-2006 02:48 AM
Re: Mixing HDD sizes on MSA1000
Is my proposed way feasible?
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тАО09-21-2006 03:09 AM
тАО09-21-2006 03:09 AM
Re: Mixing HDD sizes on MSA1000
However, you may find you need a F/W update to support the 300Gb models. HP reccomend running the latest version v.4.48
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тАО09-21-2006 03:19 AM
тАО09-21-2006 03:19 AM
Re: Mixing HDD sizes on MSA1000
I've got the F/W covered. Good to know that I can mix sizes. Now need to know if my procedure is feasible to physically remove the 72Gb drives (7 ea.) of Array B. Plug in 300Gb drives (7 ea.) and configure this as a new, larger Array B. If so, I would carry out my plan. If not, please forward a link to your proposed solution. Thanks!
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тАО09-21-2006 04:32 AM
тАО09-21-2006 04:32 AM
Re: Mixing HDD sizes on MSA1000
You can do the whole process with tyour DB online and never have to take down the services.
You can simply swap each drive in the array... one at a time allowing it to rebuild first before swapping the next. This process may take longer to complete, but your DB does not have to be offline for you to complete it.
The rebuild process takes about 15minutes per GB depending upon how much free space you have available, current I/O to the array and the priority settings.
Once all the drives are replaced and rebuilt, you will then have the extra space "available" for creating new logical drives and/or extending existing logical drives.
After the fact, you can use diskpart to extend your data partitions, assuming you are running Windows.
Asside from this, you can surely backup the data (and you better), take teh db offline, rip out all the array B disks and replace with the nw drives, rebuil the array and restore the data. It might be a faster way to get this done, but you would definittely be offline during the process.
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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тАО09-21-2006 04:38 AM
тАО09-21-2006 04:38 AM
Re: Mixing HDD sizes on MSA1000
Pulling drives and replacing them one by one, will only work if the LUN isn't a RAID0 (Stripe set) since this has no redundancy for a rebuild.
As with all array re-configuration tasks, make sure you have a known good backup of the data before you start !
Hope this helps,
Jeff
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тАО09-21-2006 05:35 AM
тАО09-21-2006 05:35 AM
Re: Mixing HDD sizes on MSA1000
If it works, I├в ll just backup the DB from Array A onto the New, Big Array B.
If it DOES├в T work, I├в ll just put the original 72Gb drives in and do the 12 hour solution.
This all begs the $64 question:
If I do the Array B rebuild with the larger drives and all goes bad for some reason, is it reasonable to expect I could put the 72Gb back in and be back where I was originally with Array B?
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тАО09-21-2006 05:43 AM
тАО09-21-2006 05:43 AM
Re: Mixing HDD sizes on MSA1000
If it works, I├в ll just backup the DB from Array A onto the New, Big Array B.
If it DOES├в T work, I├в ll just put the original 72Gb drives in and do the 12 hour solution.
This all begs the $64 question:
If I do the Array B rebuild with the larger drives and all goes bad for some reason, is it reasonable to expect I could put the 72Gb back in and be back where I was originally with Array B?
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тАО09-21-2006 07:27 AM
тАО09-21-2006 07:27 AM
Re: Mixing HDD sizes on MSA1000
If it works, I'll just backup the DB from Array A onto the New, Big Array B.
If it DOES'T work, I'll just put the original 72Gb drives in and do the 12 hour solution.
This all begs the $64 question:
If I do the Array B rebuild with the larger drives and all goes bad for some reason, is it reasonable to expect I could put the 72Gb back in and be back where I was originally with Array B?