Hi Everyone. We are migrating 3000 users from our aging iSeries (with direct attached storage) to 3 new Intel top of the line servers (with a SAN). The setup will be pretty basic, no transactional logging, no FTI’s, 400MB quotas. The 3 Intel servers will be hooked up to a IBM DS8100 SAN via fiber. Does anyone have a similar setup? How many spindles on the SAN should be dedicated to Domino to get acceptable performance? The current iSeries has 42 spindles but this is with a 100MB user quota (and older technology). On the SAN the quotas will be increasing to 400MB.
Thanks for any help or guidance you can offer me!
Peter
Subject: Moving from iSeries to Intel, question about SAN and spindles
The spindles would be SAN performance issue not Domino as this is where the writes would be done. Fibre links (hops)between the Domino server and the SAN should be kept to a minimum to minimise bottle necks here.
If I was you I would approach IBM directly to discuss the spec of SAN versus internal storage. There will be allot of documentation on this. I take it the SAN will be split into seperate LUN’s for each domino server’s?
Computer weekly article on disk and SAN performance.
Subject: RE: Moving from iSeries to Intel, question about SAN and spindles
If you are new to SAN’s here is a good place to start to learn
http://searchstorage.techtarget.com/news/article/0,289142,sid5_gci931319,00.html
Instructor lead webcasts that are very good. Each leason is about 30 to 40 mins and follow on from the one before. I found them a great place to gain the small knowledge that I have about SAN and NAS technologies.
Subject: RE: Moving from iSeries to Intel, question about SAN and spindles
Thanks for the links and suggestions Nathan! I’m going to educate myself a bit more about this technology over the weekend and contact IBM for help on Monday.