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07-05-2012 04:01 AM
07-05-2012 04:01 AM
Downgrading firmware of disk on MSA P2000 G3
Hi,
We had recently a disk crash, so we received a new disk from HP (HP P2000/MSA2000 600GB 6G SAS 15K rpm LFF Dual Port Enterprise Hard Drive, ST3600057SS). As the new disk didn't have the same firmware (we had revision 0006, it was revision 0008), we had to take the servers on the MSA to update the firmware of all disks.
It isn't possible to downgrade/upgrade a disk firmware as it is an offline process. There should be no I/O activity.
As we have only one MSA P2000, we can't downgrade the firmware on an other P2000 environment. Is there an other way to change the firmware to avoid downtime?
Thanks,
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07-06-2012 10:32 PM
07-06-2012 10:32 PM
Re: Downgrading firmware of disk on MSA P2000 G3
Hello Helmut, what is exact version of your MSA array? What is HP Part number of new drive?
I did many firmware upgrades online with low IO trafic - there was no problem. Why do you consider this upgrade as offline only? Even on higher class arrays is recomended to do upgrades in low IO time period...
Jan
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07-16-2012 02:35 AM
07-16-2012 02:35 AM
Re: Downgrading firmware of disk on MSA P2000 G3
Hi,
We have a MSA P2000 G3 FC (AP845A) with an extra enclosure (AP843A). The disk has P/N AP860A (HP P2000 600GB 6G SAS 15K rpm LFF Dual Port Enterprise Hard Drive).
In "HP StorageWorks MSA2000 G1 or G3 and P2000 G3 FC MSA - Best Practices", http://www.scribd.com/doc/47001741/HP-MSA-Best-Practices#page=56:
As you can see, you should take all the hosts offline.
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07-16-2012 04:49 AM
07-16-2012 04:49 AM
Re: Downgrading firmware of disk on MSA P2000 G3
You can also try the HP Guided troubleshooting tree for MSA storage systems. Link for the same is below:
PS
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07-16-2012 05:09 AM
07-16-2012 05:09 AM
Re: Downgrading firmware of disk on MSA P2000 G3
Disk Firmware update is an offline procedure, but this kind of downgrade would be an offline procedure too.
So better update them:
Hope this helps!
Regards
Torsten.
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07-17-2012 12:46 AM
07-17-2012 12:46 AM
Re: Downgrading firmware of disk on MSA P2000 G3
Torsten, I agree. But this meant for us nearly 35 minutes waiting to upgrade 16 disks on the MSA... Downgrading one disk would cost 5 minutes (1.5 per disk + overhead for software setup).
HP should have an alternative, as we had nearly 1 hour of downtime (stopping servers, updating disk firmware, restarting servers)!
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07-17-2012 04:58 AM
07-17-2012 04:58 AM
Re: Downgrading firmware of disk on MSA P2000 G3
When upgrading the firmware of all disks the risk is IMHO if a disk needs too long to come back it will be seen as bad for the moment and the spare kicks in. If this happens to more than one disk you have a serious problem. I think you minimize the risk if you update one by one and wait a moment before starting the next update.
Hope this helps!
Regards
Torsten.
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There are only 10 types of people in the world -
those who understand binary, and those who don't.
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No support by private messages. Please ask the forum!
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