>>> On Tue, Feb 27, 2007 at 9:47 AM, in message <[EMAIL PROTECTED]>, "Levy, Alan" <[EMAIL PROTECTED]> wrote:
-snip- > I have about 30 linux servers, each with about 1G swap on physical dasd. > > Can I use Vdisk for each of them ? Others have answered the questions you asked. I'm going to ask questions of my own... Why do you have 1GB of swap defined for each guest? That sounds far too high for most uses. Are you following the rule of thumb to use "twice the amount of physical RAM?" If so, you shouldn't be doing that. It's not even valid in the midrange world any more, although a lot of people supporting those kinds of systems haven't gotten the memo yet. In the last major Intel deployment I was involved with, the consultants from the third-party intermediary insisted that we do that for systems with 8GB, 16GB, etc., even though the amount of swap space actually being used on the systems was *zero*. "This is what Oracle recommends, so we want you to do that." I fought it, but the account manager caved, finally. Squeeze your guests down as much as possible, and see how much swap really gets used. (Remember, VDISK can support a _lot_ of paging I/O with no performance impact.) Reduce your swap sizes to cover that, plus as much "insurance" as you think you might need. Mark Post ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
