Glad I could help.
There are things you can do to improve the SAN though.
1) During quiet time - run "select * from tables" - to keep tables high up the SAN tiers
2) Rebuild your server with page sizes that match the SAN page size - EMC and HDS will be 16k or 32k pages (Clariions were 8k I think). SANs read this much page off disk but if you have ask for a smaller one - it will then issue multiple writes to send them to the db server. The Sybase default of 2k pages is ludicrously small - should be increased to 8k (like MS-SQL) or 16k.
The main thing you can do (and I wouldn't bother wasting time again on other options) - is just buy a box with more RAM. Not sure what machine you've got, but servers with 512Gb RAM are pretty cheap - much cheaper than software licenses and 10 times more effective than any other thing I've tried. And you can order one with less CPU's and pay less fees as well.