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07-23-2013 02:52 PM
07-23-2013 02:52 PM
All:
P4800 42TB disk System has a failed disk in location 23 (right hand drawerMD600). Is this hot swappable? Conflicting information in Users Guides for P4000, P4800G2, and MDS600.
One says to power down controller for that drawer prior to replacing disk. Another says if disk status shows Safe to Remove status as "Yes" in CMC, hotswap disk and CMC will rebuild from Hot spare to replacement disk.
CMC is 9.0.01 Each (of two) MDS600 Drawer is configured as Raid 1+0 and Networked Raid 10.
What should I expect for time to rebuild back from the Spare to replacement?
Regards,
Louis
Solved! Go to Solution.
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07-23-2013 10:42 PM
07-23-2013 10:42 PM
SolutionHope this helps!
Regards
Torsten.
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07-23-2013 11:46 PM
07-23-2013 11:46 PM
Re: P4800 Lefthand SAN has failed disk. Is this Hot-swappable?
time to rebuild of course depends on the size of the disk and your SAN utilization. Our P4500 SAN with 4 nodes and low utilization takes about 4 to 6 hours rebuilding a single 600 GB drive. Rebuild priority in the CMC ("storage" tab in the node details) is set to "low" on all nodes.
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07-24-2013 03:51 AM
07-24-2013 03:51 AM
Re: P4800 Lefthand SAN has failed disk. Is this Hot-swappable?
Hi Louis
If only 1 drive has failed then it can be replaced on the fly ( Hot swapable).
The following HP P4800 G2 solution components are hot-pluggable; therefore, you do not need
to power down the device before replacing a part:
•
Drives
•
External fans
•
Power supplies
•
Blade disk drives
All other HP P4800 G2 solution components are
not hot-pluggable. You must first power down
the device before replacing a part.
I have also attached P4800 Maintenance guide for your reference. Please turn to page 21
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07-24-2013 08:09 AM
07-24-2013 08:09 AM
Re: P4800 Lefthand SAN has failed disk. Is this Hot-swappable?
Hello If there is a single drive failure, yes you can go ahead and replace the drive, i mean hot -swappable.Rebuild reate depends on the data and SAN b/w parameters.
However , i would recommend you to collect a Management Bundle and anayze the Logs to have a check on all other H/w in the P4800.Always it is better to check trhe logs to understand, is there any predictive failures are reported in the SAN.
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07-24-2013 10:41 AM
07-24-2013 10:41 AM
Re: P4800 Lefthand SAN has failed disk. Is this Hot-swappable?
Thank you for the P4800 service guide. I had an older one whichis why there was conflicting information.
Thank you,
Louis
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08-20-2013 06:54 AM
08-20-2013 06:54 AM
Re: P4800 Lefthand SAN has failed disk. Is this Hot-swappable?
Update: Replaced failed disk, disk rebuilt automatically. Rebuild time was 6-7 hours (600GB).
Thanks to all who replied
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08-23-2013 05:38 AM
08-23-2013 05:38 AM
Re: P4800 Lefthand SAN has failed disk. Is this Hot-swappable?
or do you have two lefthand each with 35 disk?
I could imagine a P822 with 1.5TB of read cache ssd would still be paining to talk to so many drives? I guess that's a good fit for auto-tiering VSA?
Do they still sell the P4x00 with the MDS6000 (6gbps version)?
I was thinking about picking up an MDS600 they go for $400 used with 2 i/o modules and a bit more with all trays but it seems like a serious bandwidth choke point with a total of 12gbps (3gbps x 4) per 35 drives?
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08-23-2013 05:51 AM - edited 08-23-2013 06:00 AM
08-23-2013 05:51 AM - edited 08-23-2013 06:00 AM
Re: P4800 Lefthand SAN has failed disk. Is this Hot-swappable?
Per quickpecs the p4800 (g2) is blade based, up to 32 nodes and 1120 disks:
http://h18000.www1.hp.com/products/quickspecs/13552_div/13552_div.pdf
Now it is called storevirtual 4000.
Hope this helps!
Regards
Torsten.
__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.
__________________________________________________
No support by private messages. Please ask the forum!
If you feel this was helpful please click the KUDOS! thumb below!