I haven't seen it mentioned yet that 'VMWare' comes in at least five different flavors: VMWare Workstation (Windows or Linux base OS), VMWare GSX(Windows or Linux base OS) and the 'enterprise level' VMWare ESX (which is actually Linux under the covers, and doesn't require a user installed base OS).
Workstation is aimed at individual users, GSX is for small consolidations, and ESX is aimed more at the target market that would be served by z/VM. VMWare ESX is a great solution for some environments, but rumor has it that multiple heavily IO intensive applications will bury it. On the other hand, for pure web serving with little or no I/O involved, the economics are often much better than z/VM. In any virtualization environment, Microsoft has made it clear that you owe them a license fee for each copy of their software you are running. They have also made it clear that they are serious about stealing VMWare's market with their new Virtual Server product, and I'm guessing they will be inserting some neat hooks into Windows to help Virtual Server run better than the competition. They have been elusive about supporting Linux guests on their Virtual Server product. VMWare lists Windows, Linux, FreeBSD, x86 Solaris and NetWare as supported guests. I don't think there is an easy answer to your VMWare vs. z/VM question, and MS Virtual Server adds in a third possibility. You would have to benchmark your specific apps and do your own cost study to get the correct answer for your environment. Scott Ledbetter StorageTek -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Seader, Cameron Sent: Friday, December 10, 2004 7:41 AM To: [EMAIL PROTECTED] Subject: Re: VMware vs. VM We have Mercury Interactive here onsite this week testing our Websphere apps on Windows and VMware and against Linux on zSeries z/VM and well needless to say VMware sucks and cannot perform well at all, infact when you load up 70 concurrent users the cpu load hits 100% on the intel server and well you know the rest, when an intel server hits 100% it is like it hits idol and does nothing. Transactions time out and move very very slow, if you go higher than 70 concurrent users well it crashes the whole thing. -Cameron -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of Doug Fairobent Sent: Friday, December 10, 2004 07:36 To: [EMAIL PROTECTED] Subject: VMware vs. VM I am currently trying to convince the management at my company to launch a server consolidation project using Linux on VM. All of the Intel programmers (who vastly outnumber me) are touting VMware as the server consolidation solution. Does anyone know of an analysis or study that compares the merits of VM to VMware? I hope to find some sort of ammunition I can use to promote Linux on VM. Thanks. - doug CONFIDENTIALITY NOTICE: This message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. ---------------------------------------------------------------------- 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 This transmission may contain information that is privileged, confidential and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. A1. ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
