Do you know how to set a free disk (big enough to be a member of all RAID groups) to be a "Hot Spare" available to all RAID groups in a Clariion CX3-20 using Navisphere 6?
I have created a RAID group with number of drives "1" and type "Hot Spare", but get the feeling that there's something else I need to do, to allow it to be used automatically by all the RAID groups in my Clariion.
I have read that one must make sure SATA disks don't become Hot Spares for FC RAID groups, and vica versa, and although my Array is all FC, I get the feeling that to set that up, there must be some notion of telling the Clariion which RAID groups (of type Hot Spare) can be Hot Spares for with other RAID groups.
Many thanks for reading!
Best Answer
Kenny,
Navisphere has the intelligence to know that a FC hotspare cannot sub for a SATA hotspare (and vice-versa). Hotspares should be created from the LARGEST size disk of a given interface type (e.g. a system with 1 x 450Gb 15K drive and 30 x 300Gb 15K drives should use the 450GB drive as a hotspare). recommended ratio of hotspares to data drives is 1:30 (for FC) and 1:15 (SATA). These are gross recommendations only so, you can flex this how you want.
cheers,
dave graham corp systems engineer - EMC Atmos