Re:Informix on IBM SAN?

That is true. DBA job made simple. SAN and NAS are meant for these. They have huge cache built into them so that always you write to the cache. You dont have to worry about which physical fragmentation. You just have to worry about logical fragmentation. Bottleneck is your network bandwidth and not I/O anylonger. You need to work out performance numbers and cost that you are willing to forgo ( for fibre attached, cache, disk speed etc ) Ram ____________________Reply Separator____________________ Subject: Informix on IBM SAN? Author: d_weber@telocity.com (Doug Weber) Date: 10/3/00 3:34 AM Hello! Does anyone have experience running Informix (or any database, for that matter) on the new IBM SAN (storage area network) equipment? My company is proposing that we move our Informix database tables to SAN, and I've got some concerns. Seeing as these new devices abstract the disks into logical volumes, and are RAID underneath, how do you deal with issues such as table fragmentation, placement on disk (i.e. inner tracks, center tracks) etc? You won't know which disk the tables are on. Or, are these new disk systems just so fast, and so sweet, that I no longer have to think (worry) about such things? That's what the hardware guys are telling me, but it sounds too good to be true. Thanks in advance. Doug