Hello Si,

No it is not an issue to use all the space. The error message can be disabled so that you don’t get that particular message. What you need to do is to go into the alerts & it should be under utilization warning threshold or capacity depletion.

Please let us know if you have any other questions.

 

Hello Si,

So when you have a failed disk in you MD this is how it works.

Disk Group Rebuild - uses a hot spare or replacement physical disk

 

Disk Pool Rebuild

Uses reconstruction reserved amount. Enough member physical disks present, one for each piece of the same stripe. (example: 10-stripe disk VD, Raid 6, need at least 8 disks for the rebuild)

If reconstruction reserved amount is depleted, uses free capacity in the pool for the rebuild (if possible)

Please let us know if you have any other questions.

Hello Si,

So in the case of my setup...

1) will it take space from the disk pool itself to do the rebuild? which is the "preservation capacity of 1,668.000 GB (3 Physical Disks)" ? Yes it use the preservation space first.

2) I could survive with a maximum of 3 failed drives at the same time? i know this is unlikely but just wondering. Yes unless they all failed at the same time then you might have an issue. But it is unlikely that you will have 3 drives fail all at the same time.

Yes or no answers would suffice.

Thanks

Hi Sam,

Thanks for your reply. Yes I've managed to disable the alert/warning so it's all green.

But just to double check, is the "preservation capacity of 1,668.000 GB (3 Physical Disks)" what it will use if 1 or 2 disks fail?

Is it max 2 disk failures at the same time or 3?

If, lets say, we have some HDs failures and it uses the preservation capacity disks to rebuild and we forget to replace the failed drives and then by chance have some more failures, won't it then try to rebuild and in doing so reduce the size of the LUNs/volume and corrupt some or all of the VM data? Or if not, what would happen?

Thanks

Hi Sam, any chance you could help with my above further questions?

Thanks

Sorry not sure I understand, is the "preservation capacity of 1,668.000 GB (3 Physical Disks)" what it will use if 1 or 2 disks fail? Or does it actually then use the "reconstruction reserved amount" on the remaining disks?

Can you also answer this one please:

If, lets say, we have some HDs failures and it uses the preservation capacity disks to rebuild and we forget to replace the failed drives and then by chance have some more failures, won't it then try to rebuild and in doing so reduce the size of the LUNs/volume and corrupt some or all of the VM data? Or if not, what would happen?

Thanks

 

So in the case of my setup...  

1) will it take space from the disk pool itself to do the rebuild? which is the "preservation capacity of 1,668.000 GB (3 Physical Disks)" ?

2) I could survive with a maximum of 3 failed drives at the same time? i know this is unlikely but just wondering.

Yes or no answers would suffice.

Thanks