[zfs-discuss] ZIL and snapshots

2007-12-13 Thread Moore, Joe
I'm using an x4500 as a large data store for our VMware environment. I have mirrored the first 2 disks, and created a ZFS pool of the other 46: 22 pairs of mirrors, and 2 spares (optimizing for random I/O performance rather than space). Datasets are shared to the VMware ESX servers via NFS. We

Re: [zfs-discuss] ZIL and snapshots

2007-12-13 Thread Ross
Heh, interesting to see somebody else using the sheer number of disks in the Thumper to their advantage :) Have you thought of solid state cache for the ZIL? There's a 16GB battery backed PCI card out there, I don't know how much it costs, but the blog where I saw it mentioned a 20x

Re: [zfs-discuss] ZIL and snapshots

2007-12-13 Thread Moore, Joe
Have you thought of solid state cache for the ZIL? There's a 16GB battery backed PCI card out there, I don't know how much it costs, but the blog where I saw it mentioned a 20x improvement in performance for small random writes. Thought about it, looked in the Sun Store, couldn't find