What performance increase. Windows doesn't swap because it likes to, but because it needs to emulate ram.
With Windows updates usually the ram requirements go up with time. I would prefer it swaps above it crashing myself. From: Ken Schaefer [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 14, 2008 8:41 AM To: NT System Admin Issues Subject: RE: HIJACKED THREAD: Virtual Memory and Virtual Machines (WAS: RE: Why XP is doomed) So, you are talking about: a) Disabling the page file inside VMs (A), (B) and (C) b) Hoping that the OSes inside those machines never need more than 512MB of RAM ? I suppose it's possible. But do you want to risk it? I'm not sure you'd gain very much. Most people put the VMs on a SAN (for performance as well as HA reasons), so raw IOps shouldn't be an issue. Cheers Ken From: Matthew W. Ross [mailto:[EMAIL PROTECTED] Sent: Wednesday, 14 May 2008 4:37 PM To: NT System Admin Issues Subject: HIJACKED THREAD: Virtual Memory and Virtual Machines (WAS: RE: Why XP is doomed) Oooh... that brings up some questions... I've always wondered if anybody has looked at Virtual Machines, and the use of Page files... Let me explain. Let's say we have a box with 4 virtual machines. Each virtual machine is given 512 megs of Memory, and is running windows 2003. The host server has 4 gigs of ram, so the 2 gigs being used by the VMs is no problem, and plenty of room to spare. Of the four MVs, you have: A) A DHCP/DNS/WINS server B) An Active Directory server C) An IIS server serving simple static pages D) An SQL Server with a moderately heavy database Could someone take VMs A, B, and C and give them a ZERO page file increasing performance for all parties? This is assuming that the jobs that VMs A, B, and C are all able to run their important but trivial tasks directly from memory, while VM D has less to compete with for IO to the harddrives? Has anybody done this kind of thing with success? Just a thought. It's ripe for the squashing. Sm:)e. --Matt Ross *** The information in this e-mail is confidential and intended solely for the individual or entity to whom it is addressed. If you have received this e-mail in error please notify the sender by return e-mail delete this e-mail and refrain from any disclosure or action based on the information. *** ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
