Re: 2Gb vs 4Gb Disks - Which is faster????

In <4j9bfq$l8h@atglab10.atglab.bls.com> melvin.mariney2@bridge.bellsouth.com (Melvin Mariney) writes: > > >We are trying to decide whether to go with 2gb or 4gb HP drives for >our database using Informix. The HP salesman says that the 4gb drives >are faster than the 2gb drives which is probably true. What I would >prefer though is to go with many smaller 2gb drives so that I can >spread my database tables out across as many separate physical disks >as possible rather than having to put more tables on a larger disk. My >logic says that 2 i/o's on two physical disks will normally be faster >than 2 i/o's going to 1 physical disk especially if I'm on a multi-cpu >box and am able to do the i/o in parallel. > >I would appreciate any comments or experiences regrading using HP 2gb >vs 4gb in terms of performance. Thanks in advance. > >-- > >Melvin Mariney, Informix DBA >e-mail: melvin.mariney2@bridge.bellsouth.com > More spindles == better performance. Be careful w/ the drives though. Most newer drives are 7200RPM w/ 1024K cache and ~8ms access time. I do know one thing, HP drives are *VERY* expensive compared to the mkt at large. Try a third party- you'll probably cut your disk costs in half.