Extremely high virtual disk latency on only 1 guest
Forgive me - I'm a n00b. Not much experience with VMware, but we're having a dickens of a problem and I'm looking for suggestions. One VM guest is having major virtual disk read/write latency. It's...
View Articleiscsi performance problems - VMs crash
Hello, We have a Dell MD3220i with 24 SAS drives, dual controllers, two 1GB links per controller. Each esxi 5.1 host is connected to both controllers using dedicated NICs. We only have a few VMs...
View ArticleRe: Extremely high virtual disk latency on only 1 guest
It seems like it's just the one vdisk that has the high latency and if this is a Windows guest, it's probably the C: drive since it's scsi 0:0. Within the guest, check where your swap file and if you...
View ArticleClik here to view.
I thought I understood how VMs live in the datastores, but maybe not...
My Guest VM (Prod01) says that it has resources in Datastore01 and Datastore04. When I look at the Hard Drives assigned to the VM (under Edit Settings) I see that all three Hard Drives are on...
View ArticleRe: I thought I understood how VMs live in the datastores, but maybe not...
No ISO or Floppy images mounted from that datastore? // Linjo
View ArticleRe: I thought I understood how VMs live in the datastores, but maybe not...
Nope, no ISO or other images are mounted from here.
View ArticleRe: Extremely high virtual disk latency on only 1 guest
Hi, thanks for replying. The pagefile is on C:, and is configured to be 1.5x the memory. This is pretty much our standard configuration for all our VM guests, and we don't seem to be experiencing...
View ArticleRe: Extremely high virtual disk latency on only 1 guest
What does your array stats show?
View ArticleRe: Extremely high virtual disk latency on only 1 guest
mcowger - I'm not exactly sure how to find that. I don't have direct host access. UPDATE - migrating the guest to a completely new host in a different cluster has brought the disk latency back into...
View ArticleRe: I thought I understood how VMs live in the datastores, but maybe not...
If the second datastore shows up, there's got to be a reason for this other than just files with the same names in the datastore. As a first step, I'd suggest you take a look at the VM's latest...
View ArticleRe: I thought I understood how VMs live in the datastores, but maybe not...
Event Viewer on Datastore05 shows all these /prod01/ files being moved from Datastore04 on January 20, 2012. Event viewer on Datastore04 shows these /prod01/ files being deleted an hour after the...
View ArticleRe: I thought I understood how VMs live in the datastores, but maybe not...
Ok I read your post another time. It looks like there are two issue with this VM. The first one is why Datastore01 shows up although the active files are located on Datastore04 and the second one are...
View ArticleRe: I thought I understood how VMs live in the datastores, but maybe not...
there are no references to Datastore05/prod01 in the current vmware.log (dated today, first entry is Nov 18, 2012). All references to datastores are in the following style:...
View ArticleRe: I thought I understood how VMs live in the datastores, but maybe not...
Can you please compress/zip the vmware.log and attach it to a reply post to see whether it contains any other hints which might explain the presence of Datatore01?André
View ArticleRe: I thought I understood how VMs live in the datastores, but maybe not...
Earlier you mentioned that there's no ISO mounted. However the log file showsMar 05 09:15:49.919: vmx| DICT ide1:0.fileName =...
View ArticleRe: iscsi performance problems - VMs crash
billmathews2013 wrote: Hello, -Checked our iscsi network switch, no errors This is where I'd look, despite "no errors". What type of switches are you using?Are Jumbo Frames in use?Are the iSCSI...
View ArticleClik here to view.
Re: Reason for un-mountability: the original volume has some extents online
Well, VMware came back and said this is known behaviour, and the only way to get the volume mounted is to reboot the host ESX server. This isn't acceptable, so we've come up with another way to migrate...
View ArticleRe: iscsi performance problems - VMs crash
Thanks for the reply. We're using Cisco 2960S switches (specifically WS-C2960S-48FPS-L). We have not enabled Jumbo Frames. Our installations are the default, 1500 mtu. Yes, it's a dedicated stack of...
View ArticleRe: Using Profile Driven Storage with EMC Federated Tiered Storage
OK thanks for the link. It makes it clear that you need to disable I/O metrics within SDRS. As far as the provisioning of the LUNs, the storage team will then just provision a set of identical LUNs,...
View Article