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Re: EVA Disk Protection Level.

 
Torsten.
Acclaimed Contributor

‎06-20-2013 07:05 AM

‎06-20-2013 07:05 AM

Re: EVA Disk Protection Level.

Trying to keep it simple ...

With single or double you reserve space within a diskgroup.

If a disk fails (and has RAID1 data on it), the data will be moved from this bad disk and the "partner" disk to another pair of disks, hence 2 other disks are needed. So "single" means the space of 2 disks reserved on all remaining (!) disks within the diskgroup.

If a disk failes, it will be recovered into the remaining available space first, but you have the additional "protection level" space, even if the array is already at 100%.

This means the array has 100% space for data + reserved spaced for recovery (single or double level).


Hope you understand ...

Hope this helps!
Regards
Torsten.

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