On Fri, Jul 16, 2010 at 12:24 PM, Michael Johnson <mjjohnson....@yahoo.com> wrote: > I'm currently planning on running FreeBSD with ZFS, but I wanted to > double-check > how much memory I'd need for it to be stable. The ZFS wiki currently says you > can go as low as 1 GB, but recommends 2 GB; however, elsewhere I've seen > someone > claim that you need at least 4 GB. Does anyone here know how much RAM FreeBSD > would need in this case? > > Likewise, how much RAM does OpenSolaris need for stability when running ZFS? > How about other OpenSolaris-based OSs, like NexentaStor? (My searching found > that OpenSolaris recommended at least 1 GB, while NexentaStor said 2 GB was > okay, 4 GB was better. I'd be interested in hearing your input, though.) > > If it matters, I'm currently planning on RAID-Z2 with 4x500GB consumer-grade > SATA drives. (I know that's not a very efficient configuration, but I'd > really > like the redundancy of RAID-Z2 and I just don't need more than 1 TB of > available > storage right now, or for the next several years.) This is on an AMD64 > system, > and the OS in question will be running inside of VirtualBox, with raw access > to > the drives. > > Thanks, > Michael >
using FreeBSD 9 w/ ZFSv15 using default settings, nothing in loader.conf or nothing in sysctl.conf and a GENERIC kernel 12GB of memory seems to be all ZFS wanted to use, I have tried machines with 32GB but zfs never wants to use more unless you play with loader.conf settings if I was building a small office NAS 12GB would be where I would start. I run mostly whitebox hardware (asus motherboards desktop disks etc..) in my experience, I have found FreeBSD to be much more stable than Open Solaris but to be fair, I understand FreeBSD, and I have only loaded Open solaris with default settings and the most ram I ever gave open Solaris is a 8GB machine so if you wanted to go with Open solaris (for dedupe and such) I would use a Lot of ram from many people I have talked to 32GB of memory and Open Soalris is really stable -- Sam Fourman Jr. Fourman Networks http://www.fourmannetworks.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
