I haven't seen too much talk about the actual file read and write speeds. I recently converted from using OpenFiler, which seems defunct based on their lack of releases, to using NexentaStor. The NexentaStor server is connected to my ESXi hosts using 1 gigabit switches and network cards: The speed is very good as can be seen by IOZONE tests:
KB reclen write rewrite read reread 512000 32 71789 76155 94382 101022 512000 1024 75104 69860 64282 58181 1024000 1024 66226 60451 65974 61884 These speeds were achieved by: 1) Turning OFF ZIL Cache (write cache) 2) Using SSD drives for L2ARC (read cache) 3) Use NFSv3 as NFSv4 isn't supported by ESXi version 4.0. The speeds seem very good and my VMs run smoothly. I do use a UPS to help mitigate data corruption in case of power loss since the ZIL is OFF. Here is an exceptionally detailed blog on how to achieve maximum speeds using ZFS: http://www.anandtech.com/print/3963 Gil Vidals / VMRacks.com On Fri, Nov 12, 2010 at 7:03 AM, Edward Ned Harvey <sh...@nedharvey.com>wrote: > Since combining ZFS storage backend, via nfs or iscsi, with ESXi heads, I’m > in love. But for one thing. The interconnect between the head & storage. > > > > 1G Ether is so cheap, but not as fast as desired. 10G ether is fast > enough, but it’s overkill and why is it so bloody expensive? Why is there > nothing in between? Is there something in between? Is there a better > option? I mean … sata is cheap, and it’s 3g or 6g, but it’s not suitable > for this purpose. But the point remains, there isn’t a fundamental > limitation that **requires** 10G to be expensive, or **requires** a leap > directly from 1G to 10G. I would very much like to find a solution which is > a good fit… to attach ZFS storage to vmware. > > > > What are people using, as interconnect, to use ZFS storage on ESX(i)? > > > > Any suggestions? > > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > >
_______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
