1 Jun
2004
1 Jun
'04
10:04 a.m.
James Brigman wrote:
Steve;
Netapp recently modified their disk reconstruct procedure to copy as much valid data as possible from the failed disk and only reconstruct blocks that cannot be read. Often a disk does not completely fail, so many blocks can be copied from it, which is much faster than reconstructing.
Can you please point us to a whitepaper on this?
JKB
I have to say that, if a disk is known to be failing, I'm not sure I'd want to be trusting the data one would copy from it... Also, if it's failing in a way that makes it take a lot of time to serve a block of data, does DOT adjust its strategy accordingly and work out at some point that it should just started recreating the data from the other disks?