On Wed, Mar 15, 2006 at 11:48:57AM -0500, Guy Dallaire wrote: > There was a recent discussion on the list regarding ultrium LTO3 tape > speed/performances. > > According to my vendor, the LTO2 drive I'm about to buy is capable of > 80Gb/Hour, that is approx 50 Mb/Sec if I'm right. > > I'm currently using an adaptec AHA2940U adapter with my DLT4000 drive. > I think it's only capable of 20 Mb / Sec... > > I have a couple of question: > > What adapter should I buy to feed the LTO2 drive ? It need to be > compatible with centos 4.2 (RHEL 4 clone) > > Provided I buy the correct adapter along with the tape drive, and my > holding disk is dedicated to amanda (it's a single 200 Gb ATA drive) > how am I to know (measure) if my tape server is feeding the tape drive > appropriately ? Would I be better using an SATA drive instead of an > ATA drive ? > > Wouldn't the dumpers compete for I/O's on the holding disk with the > taper process ? Or does the taper process begins writting to tape only > when all the dumpers have finished ? > > Where sould I look to see if my tape drive is fed properly ? >
A disk system performance measuring tool you can download and compile is "bonnie++". -- Jon H. LaBadie [EMAIL PROTECTED] JG Computing 4455 Province Line Road (609) 252-0159 Princeton, NJ 08540-4322 (609) 683-7220 (fax)
