On Tuesday 09 March 2010, rory_f wrote: >Gene Heskett wrote: >> On Tuesday 09 March 2010, rory_f wrote: >> >> If the card is wide scsi, perhaps a cabling issue or termination issue >> has caused it to fall back to scsi-II width and speeds? I have read that >> some cards do this, and a reboot once the problem is solved, might bring >> back the full speed. Might be worth a try just to satisfy the curious >> cat in all of us. >> >> > Theoretically, this new drive should be as fast if not faster.. but it >> > isn't. >> >> Do you recall the block size used with the previous drive? If it was >> also 32k which is the default, some speed improvements can be had with >> larger block sizes, but I doubt that could make a 2/1 ratio change in the >> drives speed. >> >> > At least it seems to *work* now. >> >> Which is nice, but I believe I would take up the speed problem with the >> vendor after I had rebooted and checked to see if it persists. Perhaps >> there is a spindle speed jumper that is miss-placed on this one? >> Possibly automatically interlocked with the write clock speed since you >> did get the exact same size, so the drive maintains the same bits per >> inch. >> >> But I'm making SWAG's here, my knowledge of drives isn't nearly as deeply >> ingrained as the scsi experience is. >> >> Perhaps someone else here can help? > >I've rebooted the machine a few times. I'll try again, after i set the > cables again. > >One question; i don't have to run amtapetype every time i do this do i? For > instance, say the speed problems are resolved, will amdump pick up on this > automatically or does it stick to the tape speed given in amtapetype > absolutely? >
Absolutely no, amanda ignores that. It is for your edification only. One other question: Did you take note of whether or not the drive was streaming steadily, or was it 'shoe shining' occasionally? One can normally hear such goings on by the squawk of the steppers as they wind up and slow down. >+---------------------------------------------------------------------- > >|This was sent by [email protected] via Backup Central. >|Forward SPAM to [email protected]. > >+---------------------------------------------------------------------- > -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Painting, n.: The art of protecting flat surfaces from the weather, and exposing them to the critic. -- Ambrose Bierce
