Alan wrote; SFS has been around for 21 years and I think it has been very reliable. We
couldn't build z/VM without it since it holds all the source code! Including a lot of VENDORS like the one company I used to work for that had their FOCUS on the largest Shared File System I ever saw. ;-) Bill Munson Brown Brothers Harriman Sr. z/VM Systems Programmer 201-418-7588 President MVMUA http://www2.marist.edu/~mvmua/ Alan Altmark <[EMAIL PROTECTED]> Sent by: The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU> 10/29/2008 01:56 PM Please respond to The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU> To IBMVM@LISTSERV.UARK.EDU cc Subject Re: Reliability of SFS? On Wednesday, 10/29/2008 at 01:41 EDT, "Romanowski, John (OFT)" <[EMAIL PROTECTED]> wrote: > One of the SFS scenario's discussed 2 LPARs sharing an SFS filepool > holding common file(s) used to setup and IPL linux guests. > > SFS would be "unreliable" if the LPAR running the SFS filepool was down > for maintenance and the other LPAR couldn't use those unavailable SFS > files to start its Linux guests. So then let's be clear: it is the environment, *not* SFS that is unreliable. But I wouldn't let a little thing like a system outage to stop you. If you establish a CSE cluster along with the ISFC collection, you can (reliably) rig it so that the same SFS server can come up on EITHER the first or second level. (CSE would ensure that it cannot come up on both at the same time.) SFS has been around for 21 years and I think it has been very reliable. We couldn't build z/VM without it since it holds all the source code! Of course, if you're going to put mission-critical data in it, then you need to manage it. E.g. manage space and take backups. There are built-in procedures to do backups, but if you don't like them, then there are commerical backup products that will do it for you. But it's certainly true that for some folks the benefit of SFS will not outweigh the costs. Alan Altmark z/VM Development IBM Endicott *************************** IMPORTANT NOTE***************************** The opinions expressed in this message and/or any attachments are those of the author and not necessarily those of Brown Brothers Harriman & Co., its subsidiaries and affiliates ("BBH"). There is no guarantee that this message is either private or confidential, and it may have been altered by unauthorized sources without your or our knowledge. Nothing in the message is capable or intended to create any legally binding obligations on either party and it is not intended to provide legal advice. BBH accepts no responsibility for loss or damage from its use, including damage from virus. ************************************************************************
