Hi,

We have a Netapp 740 with a FC9 shelf (18Gb disks). We are planning to get a DS14 shelf with 36Gb disks. I have two questions: 1- Can we use only one spare disk (36Gb disk) instead of two (1 18Gb and 1 36Gb)? Will the spare 36Gb disk be used correctly to replace a failed 18Gb disk ? 2- Can I mix 18Gb and 36Gb disks in the same volume (same RAID)? If yes, how the data will be written? Let's say, I have 2x18G+2x36Gb (+parity). Will the 36Gb disks stored twice more data than the 18Gb ? Is there a performance issue ? a reliability issue (more data written-> more risk of failure?) ?

Thank you very much.

Jn

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