What about an striped array of SSD with a backup battery to flush the write buffer on power fail. No more dangerous (IMO) than an array of hard drives - but given the limited write times of an SSD That could be more of a danger, unless your using larger drives and not a lot of data so the drive Has lot's of area to failover to when it reaches it's write maximum.
-----Original Message----- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Wols Lists Sent: Tuesday, October 02, 2012 4:20 AM To: firstname.lastname@example.org Subject: Re: [U2] [u2] Parallel processing in Universe On 02/10/12 03:49, Ross Ferris wrote: > If the file were big enough, and already had part files, then I believe that > you could have a phantom process each of the individual parts. Failing that, > get an SSD .... relatively cheap, and will give your processing a reasonable > kick along!! > Just be careful with an SSD. If you have a power-fail in the middle of your process this sounds just like the scenario that will trash it. As in, totally dead no recovery possible. SSDs are great, but a power fail during write can take out the controller. One dead, irrecoverable disk. And if you're hammering the i/o you are VERY vulnerable. Cheers, Wol _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users