Re: What is an individual disk drive failure rate of HDS storage systems?

I'm currently using a HDS Thunder 9570. The storage subsystem does a
pre-emptive call back when it detects hard disk abnormality.

My array is still in working condition(all disks showing activity).
When the HDS guy came to swap the disk. Only the spare, where the data
had been copied to and the replaced disk are busy(having lots of
activity). The whole disk group was not rebuilt.

Well, If you're considering HDS, i would encourage you to have a look
at their NSC55. Read the ESG's report. It's truly remarkable. Hot
online migrating of Database to another storage subsystem with no
downtime. In one of the test, they even show that a client can
streaming video from the storage without interruption while migrating
to another subsystem. This is what i call true virtualization. I would
love tiered storage for myself. As not all data is made equal, I would
love to transfer them to a lower end storage array without getting the
data offline. You could use any lower end storage and virtualize them
with the NSC55. Including EMCs.... HP's MSA

.

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