Author: Brian Cuttler <brian AT wadsworth DOT org>
Date: Tue, 23 May 2006 15:55:46 -0400
Does anyone have the tape type for the LTO3 (Quantum) ? Are there any other parameters I should tweak to get better performance/utilization ? This is still a reasonable default ? tapebufs 20 I am run
Does anyone have the tape type for the LTO3 (Quantum) ? Are there any other parameters I should tweak to get better performance/utilization ? This is still a reasonable default ? tapebufs 20 I am ru
Author: Joshua Baker-LePain <jlb17 AT duke DOT edu>
Date: Tue, 23 May 2006 16:39:08 -0400 (EDT)
Does anyone have the tape type for the LTO3 (Quantum) ? This is what I use: define tapetype LTO3comp { length 420000 mbytes blocksize 2048 filemark 5577 kbytes speed 60000 kps lbl-templ "3hole.ps" }
A tapetype run on an lto-3 drive without a good estimate option might take about 14 days to complete :( -- Jon H. LaBadie jon AT jgcomp DOT com JG Computing 4455 Province Line Road (609) 252-0159 Pri
Does anyone have the tape type for the LTO3 (Quantum) ? Are there any other parameters I should tweak to get better performance/utilization ? This is still a reasonable default ? tapebufs 20 I am ru
Author: Paul Bijnens <paul.bijnens AT xplanation DOT com>
Date: Wed, 24 May 2006 10:15:03 +0200
Does anyone have the tape type for the LTO3 (Quantum) ? Try using this command to determine tapetype: amtapetype -f /dev/nst0 (/dev/nst0) will be diff for solaris i think When pointing people to thi
Author: Brian Cuttler <brian AT wadsworth DOT org>
Date: Wed, 24 May 2006 08:57:37 -0400
Jon, That may explain why this was STILL running when I came in this morning. Tue May 23 16:09:49 EDT 2006 Writing 2048 Mbyte compresseable data: 33 sec Writing 2048 Mbyte uncompresseable data: 33 se
Author: Brian Cuttler <brian AT wadsworth DOT org>
Date: Wed, 24 May 2006 14:54:34 -0400
Paul, The -e made a huge difference in runtime. For what its worth, here is the result I received. Wed May 24 09:23:58 EDT 2006 Writing 2048 Mbyte compresseable data: 33 sec Writing 2048 Mbyte uncomp
If like my ultrium 1, the block count will be exactly the same, but the speed will be slower. -- Jon H. LaBadie jon AT jgcomp DOT com JG Computing 4455 Province Line Road (609) 252-0159 Princeton, NJ
Author: Brian Cuttler <brian AT wadsworth DOT org>
Date: Thu, 25 May 2006 08:49:47 -0400
Jon, You are right, largely the same, run time of 3h 38 min and the speed was a little lower, but only by about 1%, but I don't know enough about the amtapetype and maybe the pattern of the data writ
Well, actually a little different. I got my Ultrium 1 from ebay and like a kid with a new toy ran several tapetypes on it. Three different physical tapes (two brands), one two times, and with 3 diffe
Author: Brian Cuttler <brian AT wadsworth DOT org>
Date: Thu, 25 May 2006 10:44:08 -0400
Jon, Actually I'm now wondering how to keep the drive busy, what can be done to feed it better. I'm pretty sure I'm going to need a second work area as I add partitions but disk to tape speed might b
Author: Joshua Baker-LePain <jlb17 AT duke DOT edu>
Date: Thu, 25 May 2006 11:14:38 -0400 (EDT)
slow for this drive. I just have to perform a number of dumps and check the actual speed if its below the shoe-shine limit... what is that for this drive anyway, with the noise in my computer room I