If your ESX hosts have local disk, create
VMFS partition and put them there. ( this is actually a suggestion in the 3.5
install guide)
From:
owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Page, Jeremy
Sent: Thursday, February 21, 2008
10:46 AM
To: Hadrian Baron; Toasters
Subject: RE: Mulling over virtual
disk layout
I’m not
concerned with making them faster, I just don’t see any reason for
snapping a TB or so of swap files offsite.
Jeremy
M. Page____________________
Systems Architect
From: Hadrian Baron
[mailto:Hadrian.Baron@vegas.com]
Sent: Thursday, February 21, 2008
12:44 PM
To: Page, Jeremy; Toasters
Subject: RE: Mulling over virtual
disk layout
“1)
The swap wants reasonably fast disk”
With 500 vms
I’d hope you have a decent amount of spindles to play with (it is
certainly justified), if the swap needs to be really fast why not carve a
dedicated aggregate for them and FC attach them. I don’t see how
putting the swap luns in a different volume on the same aggregate will make the
swap any faster, other than removing ASIS from the equation.
- Hadrian
From:
owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Page, Jeremy
Sent: Thursday, February 21, 2008
5:04 AM
To: Toasters
Subject: Mulling over virtual disk
layout
We are in the
preliminary stages of moving our 500 VM system to NFS (from fibre). The goal is
to SnapVault everything off site, and I’d like to use A-SIS on our
production volumes if at all possible (our VMs are almost identical and 95%
reads so this should give us a great level of compression). My question to you
is this:
Should I put the swap
file on a different VMDK and put that in a different volume? The reasoning
behind this is that 1) The swap wants reasonably fast disk and 2) I think that
the swap file will not “play nicely” with A-SIS, at least not as
nicely as normal data and 3) There is no need to actually waste bandwidth
snapping the swap file offsite since it’s not needed to recover the machines
(as long as in a DR standpoint we create the drive that contained the swap
windows will create it at boot).
Thoughts or
experiences welcome.
Jeremy
M. Page____________________
Systems Architect
* email:Jeremy.Page@gilbarco.com - ( phone: 336.547.5399 - 6 fax: 336.547.5163
- ( cell: 336.601.7274
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