5 Sep
1998
5 Sep
'98
2:20 a.m.
hitz@netapp.com (Dave Hitz) writes:
But in addition, RAID reconstruction is much faster. When you reconstruct a failed drive, you have to read all the data on all the other drives, so if your RAID groups are half as big, then the reconstruction goes twice as fast.
My experience is that reconstruction is more than twice as fast. More like quadruple, depending on server load and size of the RAID group.
Does NetApp have recent numbers on reconstruct time? Especially under various NFS loads (reading/writing to disk, not just cache, so the disks are loaded as well).
Dan