by mikearma10 » Thu Oct 18, 2012 9:01 am
i don't have all my drives on a single VDEV for that raid... so i don't have that issue... furthermore... that issue described at zdnet has sooo many holes...
Yes re-build times are getting larger and larger, and as zfs isn't as "data-aware" as say a drobo, you require a lot of IOPS to perform a resilver... it can take hours.
However... encountering an unrecoverable read error during the re-silver can be greatly reduced without sacrificing capacity... My personal view is the opposite of what people say is a good idea... I think you should buy drives from different vendors, with non-sequential serial numbers and install them... Giving that, your failure rate should be variable amoung your pool. Also, be smart.. keep an eye on your SMART stats.. if things are going high. prepare for a failure.