Re: [zfs-discuss] Using WD Green drives?

is going to suck. thanks for pointing out the obvious. :) Still, though, this is basically true for ANY drive. It's worse for slower RPM drives, but it's not like resilvers will exactly be fast with 7200rpm drives, either. danno -- Dan Pritts, Sr. Systems Engineer Internet2 office: +1-734-352-4953

Re: [zfs-discuss] Using WD Green drives?

on these drives. danno -- Dan Pritts, Sr. Systems Engineer Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 Visit our website: www.internet2.edu Follow us on Twitter: www.twitter.com/internet2 Become a Fan on Facebook: www.internet2.edu/facebook

Re: [zfs-discuss] Using WD Green drives?

On Mon, May 17, 2010 at 06:25:18PM +0200, Tomas Ögren wrote: Resilver does a whole lot of random io itself, not bulk reads.. It reads the filesystem tree, not block 0, block 1, block 2... You won't get 60MB/s sustained, not even close. Even with large, unfragmented files? danno -- Dan

Re: [zfs-discuss] Consolidating a huge stack of DVDs using ZFS dedup: automation?

did something very similar but with over 1000 CDs. If you can scare up an external DVD drive, use it too - that way you'll have to change half as many times. danno -- Dan Pritts, Sr. Systems Engineer Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 Internet2 Spring Member Meeting

Re: [zfs-discuss] verging OT: how to buy J4500 w/o overpriced

about promise FC arrays. They were clearly not ready for prime time. OTOH a SAS jbod is a lot less complicated. danno -- Dan Pritts, Sr. Systems Engineer Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 Internet2 Spring Member Meeting April 26-28, 2010 - Arlington, Virginia http

Re: [zfs-discuss] need a few suggestions for a poor man's ZIL/SLOG device

as a ZIL. Maybe as a read cache though. danno -- Dan Pritts, Sr. Systems Engineer Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 Winter 2010 ESCC/Internet2 Joint Techs Hosted by the University of Utah - Salt Lake City, UT January 31 - February 4, 2010 http://events.internet2.edu/2010

Re: [zfs-discuss] (home NAS) zfs and spinning down of drives

On Nov 4, 2009, at 6:02 PM, Jim Klimov wrote: Thanks for the link, but the main concern in spinning down drives of a ZFS pool is that ZFS by default is not so idle. Every 5 to 30 seconds it closes a transaction group (TXG) which requires a synchronous write of metadata to disk. I'm

[zfs-discuss] 7110 questions

question - I presume that I need to devote a pair of disks to the OS, so I really only get 14 disks for data. Correct? thanks! danno -- Dan Pritts, Sr. Systems Engineer Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 ESCC/Internet2 Joint Techs July 19-23, 2009 - Indianapolis, Indiana

Re: [zfs-discuss] zfs on a raid box

. the way i'd try to do this would be to use the same box under solaris software RAID, or better yet linux or windows software RAID (to make sure it's not a solaris device driver problem). does pulling the disk then get noticed? If so, it's a zfs bug. danno -- Dan Pritts, System Administrator

Re: [zfs-discuss] zfs on a raid box

Scientific) told them the raid was hosed and they should rebuild from scratch, hope you had a backup. danno -- Dan Pritts, System Administrator Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] zfs on a raid box

thing. I wonder if you've got a scsi card/driver problem. We tried using an Adaptec card with solaris with poor results; switched to LSI, it just works. danno -- Dan Pritts, System Administrator Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224

Re: [zfs-discuss] Mixing SATA PATA Drives

by adding the PATA disk. But, i think that you need SATA300 to support that feature. danno -- Dan Pritts, System Administrator Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http