Re: improving iSCSI performance: Delayed ACK, IOs per path, Large Receive...
quantify "isn't great" and explain what your array setup looks like... difficult to provide any opinion based on the info above.
View ArticleRe: SAN / RAID / vCenter issue
Stop with what you are doing. Contact VMware support and let them analyze it. It could be something as simple as flipping a bit on the partition table or it could be a form of corruption. It might also...
View ArticleDell MD3 arrays, DDP (Dynamic Disk Pools) and multipathing
Hi, Our Dell MD3660i arrays want by default for me to set up DDP (disk pools), rather than disk groups.I understand how to set up multipathing with disk groups and ESXi 5.1, but I am unsure about disk...
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Re: SAN / RAID / vCenter issue
I should probably plug those SAS cables back in then Don't worry, it's hands off. We've been able to restore the vms to other datastores (we have 14 other shared datastores, thankfully) so it's...
View ArticleTier 1 or Tier 2 storage for OS on esxi 5.0 datastores
Hello folks, We are currently reviewing how our SAN is allocated. We're using Infortrend EVSA F70 FC heads and ESVA J60-230 JBOD's. We have a smaller tier1 pool (2X logical drives of 7X 15K 600GB SAS...
View ArticleRe: Tier 1 or Tier 2 storage for OS on esxi 5.0 datastores
Generally speaking, I would bet that you could use the SATA spindles for OS volumes and be fine. Keep in mind page/swap files and application installation points as they can have higher requirements....
View ArticleRe: Tier 1 or Tier 2 storage for OS on esxi 5.0 datastores
Welcome to the Community - Since the disk performance is passed back to the OS/VM the performance will be impacted is the OS is doing a lot activity to its own file sysytem such as excessive use of the...
View ArticleRe: Dell MD3 arrays, DDP (Dynamic Disk Pools) and multipathing
ok, I nave completed setting up a test environment with DDP and it seems to work well with multipathing. The setup is MD3660i Controller 0 192.168.130.101192.168.131.101 Controller 1...
View ArticleExpand Physical RDM beyond 2TB
I have a 2TB physical RDM drive on a server that is nearly full so I need to expand it. I am running vSphere 5.0.0 Build1024429. From my research i should be able to attach luns larger than 2TB with...
View ArticleShare Datastore Cluster between two Host Clusters
Hello all. I'm in the process of separating a large cluster containing Development, Test and Production VMs into two clusters - one for Development and the other for Test & Production. My plan...
View ArticleRe: Expand Physical RDM beyond 2TB
Has the datastore - which contains the RDM .vmdk mapping file - been formatted or upgraded to VMFS5 (rather than VMFS3)?Before expanding the LUN, you should also ensure that the guest OS supports the...
View ArticleRe: Expand Physical RDM beyond 2TB
Is the VM's working directory located on a VMFS-5 datastore?
View ArticleRe: Expand Physical RDM beyond 2TB
The RDM mapping file is located in a datastore that is VMFS 5.54, Maximum File Size 2TB and Block Size 1MB. Should I change the Maximum File Size and Block Size?
View ArticleRe: Expand Physical RDM beyond 2TB
The VMs working directory is located in an NFS datastore formatted VMFS 5.
View ArticleRe: Expand Physical RDM beyond 2TB
To me this sounds more like a limitation of the NAS system than ESXi. With VMFS5, ESXi uses a unified block size of 1MB for file sizes of up to ~64TB. André
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Re: VSA Install fails whatever we do :(
Oke, last few days again a few tries, still with the same problem, must really missing a detail somewhere. We could really use some help, starting to get frustrating the log from VSa manager just...
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Re: Share Datastore Cluster between two Host Clusters
That blog post looks spot on. If anyone would know, Frank Denneman would be the person.
View ArticleRe: SAN / RAID / vCenter issue
I spoke to a very nice and knowledgeable person from VMware support yesterday and she confirmed what I thought I already knew. vSphere can't see the LUN due to an APD issue: /var/log # cat...
View ArticleRe: Expand Physical RDM beyond 2TB
This morning I created a fiber channel lun over 2TB and attached it successfully to an ESX host to test storage and ESXi. That worked okay. Then on the storage array I expanded a test RDM lun that is...
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