Terry wrote: "We are moving toward taking our POC into production."
Good job! If I had my druthers and had only 1 box, I would have a systems programmers LPAR (mine mine mine), a LPAR that ran all of test/dev linuxen, and 1 prod LPAR that ran all of prod. If you do have servers that can't go down very often, run 2 prod lpars, make them acquire a server on each (at least) and figure how some failover (active-active or active-standby). Better if that 2nd prod lpar can be on another box entirely, but if it can't, you'll still have all your capacity if you lose 1 VM lpar due to some VM error (or VM person's error). I'm not sure how your EUAL5 requirements fit in, but you can do lots of things with multiple OSAs, VSWITCHs, VLAN tagging, firewalls, etc. Marcy (with too many LPARs) "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." ________________________________ From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Martin, Terry R. (CMS/CTR) (CTR) Sent: Thursday, December 04, 2008 5:57 PM To: IBMVM@LISTSERV.UARK.EDU Subject: [IBMVM] Configuartion question Hi We are moving toward taking our POC into production. This workload is moving from Solaris running UNIX. The environment is 3 zone architecture. Our client's business requirements calls for this 3 zone environment to remain separated. It requires UAL5 security level. To this end we have six LPARS each sharing 7 IFLS with plenty of real memory on each. One of the six LPARS is our test LPAR that will have multiple levels of VM for testing and such. My question: some of our folks believe that this is an excessive number of LPARS and that it defeats the purpose of VM. Now I understand how VM works and its' ability to virtualize reducing the need for large LPAR configurations. I know that we could, lets' say combine our PROD and VAL/DEV environments that are currently running in separate LPARS into one LPAR and run a second LEVEL VM for the VAL/DEV. My contention is that if it is what is needed to fit the business requirements of the client then having six LPARS is not catastrophic. We have plans for another 16 z/Linux guests to run in the existing configuration in the next few months not requiring additional LPARS. I am not an LPAR bigot. Can anyone comment in general on the pros and cons of running LPARS as opposed to running the multiple environments under one LPAR and getting separation logically by having multi levels of VM rather then physical separation by having the environments running under a single level of VM? In the end it probably will not matter if the client insists that we need to proceed as we are. Just trying to get a prospective of those who are more experienced then myself!! Thanks, Terry
