On Fri, Apr 9, 2010 at 6:14 AM, Edward Ned Harvey <solar...@nedharvey.com> wrote: >> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >> boun...@opensolaris.org] On Behalf Of Eric Andersen >> >> I backup my pool to 2 external 2TB drives that are simply striped using >> zfs send/receive followed by a scrub. As of right now, I only have >> 1.58TB of actual data. ZFS send over USB2.0 capped out at 27MB/s. The >> scrub for 1.5TB of backup data on the USB drives took roughly 14 hours. >> As needed, I'll destroy the backup pool and add more drives as needed. >> I looked at a lot of different options for external backup, and decided >> to go with cheap (USB). > > I am doing something very similar. I backup to external USB's, which I > leave connected to the server for obviously days at a time ... zfs send > followed by scrub. You might want to consider eSATA instead of USB. Just a > suggestion. You should be able to go about 4x-6x faster than 27MB/s. > > I have found external enclosures to be unreliable. For whatever reason, > they commonly just flake out, and have to be power cycled. This is > unfortunately disastrous to solaris/opensolaris. The machine crashes, you > have to power cycle, boot up in failsafe mode, import the pool(s) and then > reboot once normal.
I think your best bet for an external enclosure is to use a real chassis, like a Supermicro with a SAS backplane or similar. You local whitebox seller (or Newegg, or Silicon Mechanics) should be able to sell something like this. Sans Digital makes a few 4 and 8 drive cases that (for the money) look like they may not suck, with eSATA, USB or SAS connections. $300 for an 8-drive eSATA/PMP chassis, $400 for 8-drive SAS/SATA. I haven't used them, but from the specs they look not horrible. http://www.newegg.com/Product/Product.aspx?Item=N82E16816111071 http://www.newegg.com/Product/Product.aspx?Item=N82E16816111092 -B -- Brandon High : bh...@freaks.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
