Hi, I would have a couple of questions concerning the operation of a 3PAR 7200 with 12x 300gb 15k disks . This is my first installation of a storage 3PAR I have previously installed a variety of EVA and MSA . I have created a CPG group in RAID5 selecting all 12 disks configured in 5:1 ratio with avaibility magazine . From what I understand the 3PAR allocates , with SparingAlgorithm : Minimal , The space equivalent to the biggest disc present in the cage to be used as hot spare space to perform a fast rebuild in case of rupture of a disc. Inside the cpg I created a virtual volume of 2.2 TB using all the available space and presented to my hosts file.
So my question is as follows:
How many disks can be broken , not simultaneously , before lose all the data? In case of failure of a disk on a 3PAR the rebuild of the CPG should start using the spare space . Correct? If the rebuild is successful , given that cpg is set in a raid 5 you can still break a disk before losing all your data ?
Correct?
Thanks
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