2012/4/30 Brian Candler <b.cand...@pobox.com> > KO or OK? With a RAID controller (or software RAID), the RAID subsystem > should quietly mark the failed drive as unusable and redirect all > operations > to the working drive. And you will have a way to detect this situation, > e.g. /proc/mdstat for Linux software RAID. >
KO. As you wrote, in a raid environment, the controller will detect a failed disk and redirect I/O to the working drive. With no RAID, is gluster smart enough to detect a disk failure and redirect all I/O to the other server? A disk can have a damed cluster, so only a portion of itself will became unusable. A raid controller is able to detect this, gluster will do the same or still try to reply with brokend data? So, do you suggest to use a RAID10 on each server? - disk1+disk2 raid1 - disk3+disk4 raid1 raid0 over these raid1 and then replicate it with gluster?
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