RE: [U2] Putting Universe on a SAN

2007-11-10 Thread David Wolverton
We have customers running UniData on a SAN and very pleased with the results. The snapshotting really isn't as practical as they'd have you believe was probably the biggest negative surprise - their users were unwilling to deal with a 15-30 second 'DBPAUSE' more than once or twice a day, so the id

RE: [U2] Putting Universe on a SAN

2007-11-09 Thread Dan Fitzgerald
Well, this would be a not-so-good way to go. The big sticking point in this particular scenario is that you're sharing the SAN. I know, that's part of the point of having one. But what happens is that UniVerse is requesting relatively small I/O from the OS, typically 4, 8, or 16K per request, and

RE: [U2] Putting Universe on a SAN

2007-11-09 Thread Jerry Banker
tting Universe on a SAN re SAN's and Universe: DELETE.FILE and RESIZE.FILE will not work on dynamic files that are NFS mounted. (Universe keeps the DATA.30 file open while trying to delete the enclosing directory. This will fail on an nfs mounted directory.) Override the VOC entry wit

Re: [U2] Putting Universe on a SAN

2007-11-09 Thread Richard Nuckolls
re SAN's and Universe: DELETE.FILE and RESIZE.FILE will not work on dynamic files that are NFS mounted. (Universe keeps the DATA.30 file open while trying to delete the enclosing directory. This will fail on an nfs mounted directory.) Override the VOC entry with your own version. Do not