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VA7410 - how do I verify fault tolerance following failed disk?

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Chaz Emery
Advisor

VA7410 - how do I verify fault tolerance following failed disk?

Situation:
I have a HP VA 7410 that had 2 disk failures, 1 in each Redundancy Group, and the Array is currently rebuilding.
I know that right now, during rebuilding, I do not have fault tolerance.
Question:
How do I verify or predict whether I will have fault tolerance once rebuilding is complete?
Related Tools that I am familiar with: armdsp, armdiag, HP-StorageWks-CommandView, ... etc.
5 REPLIES
Patrick Wallek
Honored Contributor

Re: VA7410 - how do I verify fault tolerance following failed disk?

You can check the array status with the armdsp command, or via Commandview. If the array shows ready, with no warnings about redundency lost or anything, then you should be good.
Chaz Emery
Advisor

Re: VA7410 - how do I verify fault tolerance following failed disk?

I spoke a little with HP Storage Support, and they carified for me.
The Command View Capacity Status pie charts tell the story:
Currently, RG1 pie chart shows
30 GB Unallocated
133.3 GB Active Spare
(2 x 66GB Disks worth of spare space)
Basically, as soon as a disk failure occurs,
1 disk worth of spare space is used to rebuild, and if possible, 1 disk worth of Unallocated space is converted to spare space.
So, provided I have no further failures in the same Redundnacy group during rebuilding. I will still have 2 disks worth of Spare space, enough for (powers forbid) 2 more disk failures, provided they do not occur at the same time, nor during rebuilding.

Thanks for your time folks. Will assign points for your efforts.
Juan M Leon
Trusted Contributor
Solution

Re: VA7410 - how do I verify fault tolerance following failed disk?

Another way to get detail info from the VA is running.

armdiag -I -if array_status

The -I option will generate a full pre-defined options ti gather all info from the array and all that info will be output to a file called arra_status( as shown in the -if option). Remember that the output will be zip file. you will have to unzip (gzip nor uncompress work for this file).
Good luck

Chaz Emery
Advisor

Re: VA7410 - how do I verify fault tolerance following failed disk?

Wow ... that is really cool, lots of good output from that, thanks!
Chaz Emery
Advisor

Re: VA7410 - how do I verify fault tolerance following failed disk?

Thanks everyone.