There is a section that covers offset's for the vmdk's. This is particularly important when implementing vmdk's in order to avoid partial writes.
________________________________
From: Page, Jeremy [mailto:jeremy.page@gilbarco.com] Sent: Wednesday, May 28, 2008 8:41 AM To: King, Robert; toasters@mathworks.com Subject: RE: Is there a limit to the number of VM's per NFS export?
I'm not using LUNs, I'm using NFS, which unfortunately is not very well covered in that document.
Jeremy M. Page____________________
Systems Architect
* email:Jeremy.Page@gilbarco.com - * phone: 336.547.5399 - 6 fax: 336.547.5163 - * cell: 336.601.7274
________________________________
From: King, Robert [mailto:Robert.King@netapp.com] Sent: Wednesday, May 28, 2008 8:29 AM To: Page, Jeremy; toasters@mathworks.com Subject: RE: Is there a limit to the number of VM's per NFS export?
http://media.netapp.com/documents/tr-3428.pdf http://media.netapp.com/documents/tr-3428.pdf
See the above TR for best practices with VMWare ESX. Lun alignment is crucial to performance with an environment that has many VMDK's.
________________________________
From: Page, Jeremy [mailto:jeremy.page@gilbarco.com] Sent: Wednesday, May 28, 2008 7:10 AM To: toasters@mathworks.com Subject: Is there a limit to the number of VM's per NFS export?
For the folks using NFS to hold their VMDK files, have you run into a limit to how many VM's a single share can support? Either a hard limit or just a point where performance degrades? I'm trying to figure out how many volumes I'll need to create to hold ~300 VMs on my 3070 cluster.
This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.
This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.