Two vCenters, Same Storage
I'll be migrating my hosts/vms residing in one specific geographic location into a different vcenter soon. Some of the same storage arrays will continue to be used. Is there any issue with having hosts...
View ArticleUsing SIOC with virtual HBAs / Cisco Fabric Extender
I'm implementing SIOC with virtual HBAs. (In this case virtual HBAs provided by Xsigo / Oracle Fabric Interconnect, but the same question would apply for virtual HBAs provided by Cisco Fabric...
View ArticleLSI MegaRaid SAS 9240-4i prevents vSphere from booting
Hello everyone I am new here, so I am sorry if this thread is misplaced. I just picked the section that seemed the most storagehardware related to me. This is going to be a long one, but I try to...
View ArticleReason for Storage DRS vmotion?
Hi! Is it possibly to see why storage DRS moves a VM to another datastore..there are two possible reasons, datastore is full or latency is to bad.I cant find the reason in the log..
View ArticleSIOC caviats?
In this post: http://blogs.vmware.com/vsphere/2012/03/debunking-storage-io-control-myths.html#comments Cormac Hogan notes that even if your goal is only to equally balance I/O workloads with identical...
View ArticleSeveral datastore initialization
Hi folks, two weeks ago we had an incident on a Dell server running ESXi 5.1.0Basically after a reboot the ESXi told us that there were no persistent datastores and prompted us to create a new...
View ArticlevSphere 5.1 and Netapp VSC questions
Hi, im using vsphere 5.1 and a Netapp 3140 with the VSC plugin in vcenter.Since all older versions usually worked fine when it comes to overtaking in the netapp cluster, we are having trouble at the...
View ArticleFacing performance issues with ESXi
Dear, I am facing an issue and I couldn't find solution for it, I have two virtual environment one on min site and one on DR site, and I am using SRM between them. The main site contain 12 SUN 6270...
View Articleiscsi boot lun size
I setup iSCSI boot for blade server. I carefully read VMware kb: VMware KB: Installing or upgrading to ESXi 5.1 best practices But it's not clear at all: When booting from a local disk or SAN/iSCSI...
View ArticleSetting SIOC congestion threshhold using EMC FAST storage tiering
I am trying to determine the proper SIOC congestion threshhold when using EMC FAST storage tiering. For example, suppose I have a Gold, Siver and Bronze Tier. My Gold tier has LUNs backed as follows:...
View ArticleImplementing Storage DRS.
Hi, We are planning to implement Storage DRS in our current virtual enviorment.Our enviorment is having ESXi 5 host and VMFS 5 file system. What plan do you recommend to enable this feature. OR is it...
View ArticleIs it possible to change PSP on a fly...
Dear team, one of the san datastore psp is MRU but as per HCL it should be RR, will I abl to change PSP from MRU to RR on a fly without effecting running production VMs. regardsMr VMware
View ArticleShare datastore between clusters
Hi together, I want to add a second cluster to our existing datacenter and would like to use the same (iSCSI) datastore like for the first cluster. Is it safe to share it between clusters within the...
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How can I changed the default provision policy from thick to thin when...
Hi All, In the process of "create new virtual machine" you have an option to create a disk and specify the virtual disk size and provisioning policy.The default value is Thick provision lazy zeroed.I...
View ArticleHow to change vCenter/VASA alarm triggers treshold "Thin-provisioned volume...
Hi all, I have implemented VASA with our EMC Symmetrix array and I wonder how to change the tresholds that triggers the vCenter 5.1 alarm "Thin-provisioned volume capacity threshold exceeded". This is...
View ArticleWhere can I see if SIOC kicked in?
Hi all, where can I see if SIOC kicked in?The VM that is demanding a lot of iops will be slowed down by SIOC in favour of its neighbour VMs when the treshold is reached. Where can I see that SIOC is...
View ArticleFree up space on datastore
Hi Guys Hoping someone can assist me here . I have a datastore with only 20 gigs of free space . My question is what is the preferable method of reclaiming space on the datastore . Shall I use...
View ArticleNew-Hardisk and RDM issues
While trying to add a new raw disk to a VM, it is throwing the error "A general system error occurred: Error creating disk Function not implemented". But the same is happening fine when I tried to do...
View ArticlePerformance on StorageTek 6140 array
Hi Guys, I am looking for some thought, feedback or similar experiences when using StorageTek 6140 arrays.We have an environment made up of HP blades using virtual connect running ESXi 5.1. Our storage...
View ArticleIsolated VM group in vSphere
Hi , I'm going backwards with a request I hope someone might be able to shed some light upon. I have a customer who needs to create ~30 vms in their environment, to be used by a separate part of their...
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