Peter Tribble wrote:
Why? Is the possibility of component or path failure and data corruption so close to zero?
Yes, actually. To the first order, the failure rate of such devices is based on the number of active devices. A modern disk may have 10+ active devices, not counting the motor, read head, or media. A Flash Storage Module may have 9 total devices, including the media: 8 flash chips + 1 controller. The flash chips can be internally correctable (eg. ECC) and include space for sparing, to accommodate the endurance requirements. Net-net, the flash storage module will be 2x-4x more reliable than any disk drive. Somewhere around here I have a slide which shows why disk reliability is more important than RAID... -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
