12H Autoraid

[Lubo]

When I have configured 12H Autoraid only as Raid 1/0 must I have enabled Hot Spare for security of disk failure or no?

[Eugeny Brychkov]

You can not configure autoraid directly to work in 1/0 mode. You can allocate less than 50% of available space and autoraid will allocate and store data in 1/0. AHS is good option, but when thinking about 1/0 mode you need to distract AHS capacity from total capacity and then divide by 2 to get maximum size which can be allocated for LUNs
Eugeny

[Lubo]

Yes I know I can not configure it as 1/0. I allocated less than 50% of available space on autoraid and store data in 1/0.
So for this conditions it is not necessary to left hot spare?

[Eugeny Brychkov]

No. In case of disk failure free space will be used for rebuild. After rebuild will complete you simply may have more than 50% allocated space
Eugeny