Thanks to the help from many people on this board, I finally got my OpenSolaris-based NAS box up and running.
I have a Dell T410 with a Xeon E5504 2.0 GHz (Nehalem) quad-core processor, 8 GB of RAM. I have six 2TB Hitachi Deskstar (HD32000IDK/7K) SATA drives, set up as stripes across three mirrored pairs. I have an OCZ Vertex 2 (NOT Pro) 60 GB SSD (Sandforce-based) for the L2ARC. All seven drives are attached to a Dell SAS 6i/R controller, which is an 8-channel SAS controller based on an LSI chipset. I've enabled dedup and compression on all filesystems of the single zpool. Everything is working pretty well, and over NFS, I can get a solid 80 MB/sec if I'm copying big files. This is adequate, but I am wondering if I can do any better. I'm only using this box to share between two or three other machines, in a private (home or lab) network. I think I've followed all of the suggestions I've been given; in particular, running 8 GB of RAM with the 60 GB SSD for the L2ARC should allow full caching of the dedup table. I ran zilstat.ksh, but it always came up with zeros, which suggests there's no point in a ZIL log SSD. Is there anything left to tune? If so, how do I go about figuring out how to increase performance? Right now, I'm just copying large files and looking at the transfer rate as calculated by nautilus, or with iostat -x. What's the next thing to do, as far as diagnostics? I'd like to learn a bit more about the process of optimizing, since I have other such boxes I want to set up and tune, but with different hardware. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
