Troubleshooting Software iSCSI performance
Hello,We are experiencing difficulties with our View infrastructure: users suffers from slow response times.The central issue seems to be disk performance, basically file copies/transfers can't exceed...
View ArticleRe: Separating VMDKs what are the draw backs?
I'd say that's a bit of a legacy approach to storage architecture, such as having a single VM with a system VMDK on NL-SAS or SATA and an application VMDK on SAS. The idea these days is to put some...
View ArticleRe: Troubleshooting Software iSCSI performance
I'd check the size of your vSphere HBA and NetApp LUN queue. It may be set to a size that only allows that much IO to be active in the queue. I believe the recommended LUN queue depth for NetApp is 64....
View ArticleRe: HP/3PAR StoreServ 7000
I have to agree with Calvin, the EVA series has been around for a long time and have mostly heard good things about them. I personally have an EVA4400 and a P6300 in our environment and they have been...
View ArticleRe: Troubleshooting Software iSCSI performance
Thank you for your answer, it's not my field of expertise and I sure need a hand.The disk queue length seems to be a good indicator of the problem, unfortunatly I'm not familiar with the related...
View ArticleRe: Separating VMDKs what are the draw backs?
The only real down-side to having VM disks on separate datastore is the potential management headache. If you have a system, including a naming system, that is faithfully executed then it should be no...
View ArticleDoes changing the Host access to an RDM LUN, break the MSCS?
I have a single Host configured as a "Cluster in a Box". I would like to change the Host upon which the Virtual Nodes run. To do this I am planning to present the RDM to a new ESXi Host, and remove...
View ArticleVMDK thin provisioning with VMAX (metadata performance hit?)
Hello all, We are purchasing a VMAX 10k for our environment, and I wanted to verify something the sales reps have told us (you know they will say anything). In our current environment we are seeing...
View Articlestorage vmotion - vaii integration?
I find myself being unclear about what VAII integration means, and how to enable it, and I'm just not sure when/if and under what circumstances an array will perform the heavy lifting of a storage...
View Articlestorage vmotion - how many at a time?
I know this is probably a "try it and see how it goes" kind of thing. But I'm curious about your experiences - how many storage vmotions have your systems been able to maintain at once? If I have 10...
View ArticleRe: storage vmotion - how many at a time?
in vSphere 5.0 and 5.1 (http://www.vmware.com/pdf/vsphere5/r50/vsphere-50-configuration-maximums.pdf , http://www.vmware.com/pdf/vsphere5/r51/vsphere-51-configuration-maximums.pdf) the Maximums -...
View ArticleRe: storage vmotion - vaii integration?
This FAQ will be a good reading on VAAI. http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1021976 using vshpere 5.1 enterprise + and a new netapp...
View ArticleRe: storage vmotion - how many at a time?
thank you - I didn't think about checking this document. I'm still curious about actual experience - is it realistic to have 8 storage vmotions going on at once (2 per 4 hosts)?
View ArticleRe: storage vmotion - how many at a time?
That really depends on the target storage array. If it can handle that much read/write/throughput activity, absolutely! Also, if it is a VAAI assisted storage vMotion, you would potentially see very...
View ArticleRe: storage vmotion - how many at a time?
It totally depends on the type of disks used for datastores and the underlying layout of said datastores, in addition to other factors like available cache and CPU on the storage system and what other...
View ArticleNormal response times as seen in iometer
I'm running iometer on an RDM connected to a VM. The RDM is part of a new storage array with nothing on it. I want to run my VMware environment on this storage array. What is a good number in ms...
View ArticleStorage profiles per harddisk
Hello all, We have a business user who would like to seperate OS disks (put them on SATA) and DB disks on SAS. Now I would rather not manage all these relationships by hand; however, I do see that...
View ArticleRe: Troubleshooting Software iSCSI performance
You can install NetApp VSC (Virtual Storage Console) on vCenter and use that to set all the options. How is your view provisioned? Linked Clone?
View ArticleCompellent Storage Questions
We are currently working with a Dell reseller on a possible Compellent purchase and would appreciate any thoughts or opinions on the question below related to the sizing of the Compellent array.We are...
View ArticleRe: How to reclaim storage after migration to SD card
Hi,You still having this issue? if the system is booting up now off your SD cards now do you see your old storage under the "storage" tab?regards
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