> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Paul Kraus > > I am looking for references of folks using ZFS with either NFS > or iSCSI as the backing store for VMware (4.x) backing store for
I'll try to clearly separate what I know, from what I speculate: I know you can do either one, NFS or iscsi served by ZFS for the backend datastore used by ESX. I know (99.9%) that vmware will issue sync-mode operations in both cases. Which means you are strongly encouraged to use a mirrored dedicated log device, presumably SSD or some sort of high IOPS low latency devices. I speculate that iscsi will perform better. If you serve it up via NFS, then vmware is going to create a file in your NFS filesystem, and inside that file it will create a new filesystem. So you get twice the filesytem overhead. Whereas in iscsi, ZFS presents a raw device to VMware, and then vmware maintains its filesystem in that. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
