Re: Noisy neighbor with RDMs
Does the degradation in performance closely follow the spike in IOPS on the SQL Server? I can't call it degradation. It's just the VMFS datastores latency which goes up. But it does correlate with the...
View ArticleRe: Oracle setup on VMware with NFS Datastores
Have you configured SCSI bus sharing for the VMs? Link with details: VMware vSphere 5.1
View ArticleRe: Oracle setup on VMware with NFS Datastores
Yes, so I finally got this to work by adding scsiX:Y.sharing = "multi-writer" to the *.vmx files of the 2 virtual machines. After that I was able to add all the vmdk's to both vm's without any issues....
View ArticleRe: Oracle setup on VMware with NFS Datastores
Why not use oracle dNFS? Better performance and support....
View Articlestorage vmotion - 3.5 hosts and 4.1 hosts
Have 2 esx3.5 u3 (or whatever the last update was for 3.5) and 2 new esxi 4.1 (yes, I know - but it is only temporary - will be upgraded to 5.1 this fall). The 3.5 hosts connect to storage on the old...
View ArticleNo of VMs per datastore as a Best Practice
Dear team, just want to know how many vms can be stored on a local / san datastore as a best practice. regardsMr VMware
View ArticleEMC Grap issue
Dears Hi I having five ESXi host (two of them esxi5.1 and the remain are 5.0) trying use EMC Grap 1.3.1. I successfully did it on only one host. the others show errors note: I try to run grap from...
View ArticleRe: No of VMs per datastore as a Best Practice
Hi try to read vSphere X.x Max configuration for each version for local storage it depends on space, number of VMs, Number of Disks per VM, OS, and required I/O read & Write
View ArticleRe: storage vmotion - 3.5 hosts and 4.1 hosts
No, the host need to see the NFS datastore
View ArticleRe: storage vmotion - 3.5 hosts and 4.1 hosts
wait - wait I think it just became clear to me. Wow - so simple! As long as the new hosts can see the old datastores (they do) then we just vmotion from old hosts to new, and then storage vmotion from...
View ArticleClik here to view.
Re: No of VMs per datastore as a Best Practice
Hi, I've seen best pratice tips around 10-20 vmdks per LUN. But I don't think those numbers are generally valid because it depends on so many factors that differ in every environment. For example: What...
View ArticleRe: improving iSCSI performance: Delayed ACK, IOs per path, Large Receive...
Chriswahl, thanks for the comment and url, I like it a lot actually and will use it for purely the SAN side of things. In my case with our little SAN (it's got 12 x 300GB 10k disks) I tested raid 5 and...
View ArticleRe: improving iSCSI performance: Delayed ACK, IOs per path, Large Receive...
depping, thanks for showing an interest and if you've got any comments I'd be grateful. It's a very little setup:2 x Dell R620 servers1 x Dell Powervault MD3220i with 2 controllers each with 4 NICs. It...
View ArticleRe: improving iSCSI performance: Delayed ACK, IOs per path, Large Receive...
mpadfield wrote: Re the iscsi networking, we have seen that some changes to the defaults have made significant improvements, although I accept your point and this guy's point What's the point of...
View ArticleRe: improving iSCSI performance: Delayed ACK, IOs per path, Large Receive...
mpadfield wrote: The Dell doc doesn't mention the settings I'm posting about, iops per path, delayed ack, large receive offload. I raised a case with vmware who said they don't make recommendations,...
View ArticleRe: EMC Grap issue
Can you let us know how you have used this ? You have to enter only ./emcgrab for running the same .
View ArticleRe: EMC Grap issue
to run Grap is easy you just need to do is follow this steps: 1# open command line and go to grap location C:\> cd C:\EMC-ESXi-GRAB-1.3.X 2# type this C:\EMC-ESXi-GRAB-1.3.X> emcgrab.exe –host...
View ArticleRe: No of VMs per datastore as a Best Practice
vSolid wrote: Hi try to read vSphere X.x Max configuration for each version for local storage it depends on space, number of VMs, Number of Disks per VM, OS, and required I/O read & WriteSame...
View ArticleUSB 3.0 External HDD, connecting to ESXI or ESX....copy speed?
Hi folks I am trying to figure out the fastest way to get 6 Exchange Databases totalling 1.5TB in size (SITE A), which are hosted on a Windows VM on VSphere, , to SITE B (1 mile apart). To copy these...
View Article