Joseph, I can't find the build info for that box, but it looks to be a built in SATA controller. (SmartArray E200i)
Does that sound like a viable option? Thanks, Bill On Wed, Apr 6, 2011 at 2:28 PM, Joseph L. Casale <jcas...@activenetwerx.com>wrote: > Which controller on the ML? > > > > *From:* Bill Songstad [mailto:bsongs...@gmail.com] > *Sent:* Wednesday, April 06, 2011 1:20 PM > *To:* NT System Admin Issues > *Subject:* OT: VMware disk latency > > > > I have an ESXi4 setup on a HP ML350 G5 running a RAID5 array of sata drives > for the primary datastore and a drobo iscsi array for the secondary > datastore. 2 VMs on each datastore. 4 VMs total. All w2k8. > > > > When I do a large file copy to any of the VMs from a share on a different > physical machine there is huge latency, and not just on the machines hosted > on the drobo. Okay, not the fastest disk arrays in the world, but I wonder > if my bottleneck is elsewhere though. Durring the file copy, latency on the > physical disks shoots up to 200-500 Milliseconds. But on the Virtual disks, > the latency is literally 10 times that, with the other machine on that > datastore essentially mirroring the physical disk. Subsequently, the > machines effectively stop responding. > > > > Durring a file copy to vm1 the latencies look like this: > > > > Physical DAS latency 300 ms > > vm1 vdisk on DAS latency 3,000 ms > > vm2 vdisk on DAS latency 300 ms > > Physical iSCSI latency 0 ms > > vm3 vdisk latency 0 ms > > vm4 vdisk latency 0 ms > > > > Is this to be expected? Why the ten-fold discrepancy between the actual > disk and the virtual disk? > > > > Any insights would be appreciated, > > > > -Bill > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to listmana...@lyris.sunbeltsoftware.com > with the body: unsubscribe ntsysadmin > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to listmana...@lyris.sunbeltsoftware.com > with the body: unsubscribe ntsysadmin > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
