Re: thin vs thick provisioning and performance impact
It might have been. From reading the post and associated links, it sounds like the penalty is only on first write even without VAAI. With VAAI (I'm using EqualLogic so I have VAAI) that penalty is...
View ArticleRe: thin vs thick provisioning and performance impact
>> is there any validity to thinking that thick provisioned disks might have their blocks less spread out and hence, faster disk access? Results will differ in a very wide range - just consider...
View ArticleRe: thin vs thick provisioning and performance impact
Hi continuum, Thanks for you comments. You mentioned higher risk of failure for thin provisioned vms is interesting. Can you elaborate? In my last couple jobs the admins setup vms, almost always, as...
View ArticleRe: thin vs thick provisioning and performance impact
Hi FreddyYour question should be answered in a very long blog-article. Please forgive me if I answer in several posts - just as time allows. For the record: due to my job I believe I see more problems...
View ArticleAbout ATS Write operation
VMware VAAI ATS use CAW（Compare and Write）command,and I read the SBC specifications,but the CAW's write operation have not more details.The question is CAW's write operation is Atomic Write？Somebody...
View ArticleRe: Storage considerations - recommendations
Hi! I'm considering to build a VM ware solution form my company using an HP Proliant, witch local storage.... But what's the best performance and redundancy choice for storage (iscsi, fc nfs)? thanks a...
View Articletraditional RDMs versus NPIV RDMs
Hi folks -- I am trying to test out NPIV storage for guests versus RDMs in physical mode -- please correct my understanding and also please kindly add any additional advanatages as you see fit 1. with...
View ArticleStorage Migration - More Space Used Than Files Shown
I've been searching for a post that is similar to this and been coming up emtpy handed. If this has been covered somewhere else please feel free to point me there. Our company is running 3 Dell hosts...
View ArticleRe: Unmounted NFS-vVol-Datastore -> How to mount it again or get rid of it?
Hi all, I found the answer to my question: I had to use the "standard" add-datastore procedure - there the missing NFS vvol-DS was appearing and I could readd it. Cheers, Christian
View ArticleRe: Storage Migration - More Space Used Than Files Shown
Does this make sense to anyone?Yes :-) Free space inside the guest OS does not mean that blocks are zeroed, then when you do a Storage vMotion the free space (not zeroed) is not released. Try use the...
View ArticleESXi 5.1 vmdk i slarger than the maximum size
Hi everybody. I have esxi5.1 with luns formatted as vmfs5. I created VM with 2 tb hard disk, now i cannot create snapshot via veeam, it tells that file vmdk is larger than the maximum size supported by...
View ArticleWhat Flash Drives are you using for VSAN?
I've been using Intel S3700's for VSAN with vSphere 5.5, but hearing good things about Sandisk.I noticed that the Intel 36xx series is now on the HCL for capacity tier (which is nice as they cost 1/2...
View ArticleDisk Provisioning for a Noob
Hello Everyone, I'm fairly new to the Virtual world, and my task is to change a thin provisioned disk into a thick eager zero one. The server was restored after a Windows Update problem and...
View ArticleRe: Disk Provisioning for a Noob
I know where the function is to do this ...In order to be able to find out how much time it takes, please provide the information what exactly you are thinking of. Although Eager Zeroed may have a...
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Re: Disk Provisioning for a Noob
André, Thanks so much for the reply! I didn't realize there was another option/area for inflating the drive, as well as the restore time impact. I'll try to get it done this week, and let you know...
View ArticleRe: Disk Provisioning for a Noob
Hmm, I guess I have to apologize. I just tried inflating a virtual disk and it takes much longer than I had in mind it would take.I'd recommend you create a test VM with e.g. a 50GB Thin virtual disk...
View ArticleRe: Disk Provisioning for a Noob
Thanks for checking that! I'll try the test as you recommend. RM
View ArticleRe: ESXi 5.1 vmdk i slarger than the maximum size
vSphere 5.5 supports virtual disks with up to ~62TB, so you shouldn't have issues with the 2TB virtual disk anymore (assuming the VMFS5 datastore was not upgraded from VMFS3). For earlier version, the...
View ArticleRe: ESXi 5.1 vmdk i slarger than the maximum size
If i upgrade esxi hosts from 5.1 to 5.5 it will give me opportunity to take snapshot or backup with veeam in my existing enviroment?
View ArticleFC Storage Volumes available locally on host but not when logged onto vCenter
We have recently upgraded from vSphere 5.1 to .5.5 U2 at our prod site. Last week we had to perform a live DR simulation at a cold site where the following issues surfaced. All the blades were built...
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