On maandag, september 2, 2002, at 01:49 , Daniel Sparrman wrote: > Hi Eliza > > As I understand it, each "tape-HBA" has 3 3590E FC connnected to it. The > two 21G database disks, are each connected to it's own HBA? > > According to spec sheets, the 3590E FC could handle speed up to 100MB/s > with 3:1 compression. This means that with 3 drives, you could have up > to > 300MB/s. However, the HBA will only theoretically handle 125MB/s, or > 250MB/s with 2Gb FC. > Fortunately, an 3590E will do only about 16MB/s or so, so 3 drives will not fill up a FC link.... 3:1 compression is very rare in my experience, 2:1 or less is far more likely...
--- Met vriendelijke groeten, Remco Post SARA - Stichting Academisch Rekencentrum Amsterdam http://www.sara.nl High Performance Computing Tel. +31 20 592 8008 Fax. +31 20 668 3167 PGP keys at http://home.sara.nl/~remco/keys.asc "I really didn't foresee the Internet. But then, neither did the computer industry. Not that that tells us very much of course - the computer industry didn't even foresee that the century was going to end." -- Douglas Adams
