Good Morning Martin I do not remember which platform you are using for you media servers.
On solaris using the st driver the use of hardware compress depends on which device name you are using. from the following any of the dev entries with the "c" will call for hardware compression. In netbackup we use /dev/rmt/0cbn len > ls -l /dev/rmt/0* lrwxrwxrwx 1 root root 68 Jul 26 2007 /dev/rmt/0 -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0: lrwxrwxrwx 1 root root 69 Jul 26 2007 /dev/rmt/0b -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:b lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0bn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:bn lrwxrwxrwx 1 root root 69 Jul 26 2007 /dev/rmt/0c -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:c lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0cb -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:cb lrwxrwxrwx 1 root root 71 Jul 26 2007 /dev/rmt/0cbn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:cbn lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0cn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:cn lrwxrwxrwx 1 root root 69 Jul 26 2007 /dev/rmt/0h -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:h lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0hb -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:hb lrwxrwxrwx 1 root root 71 Jul 26 2007 /dev/rmt/0hbn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:hbn lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0hn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:hn lrwxrwxrwx 1 root root 69 Jul 26 2007 /dev/rmt/0l -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:l lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0lb -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:lb lrwxrwxrwx 1 root root 71 Jul 26 2007 /dev/rmt/0lbn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:lbn lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0ln -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:ln lrwxrwxrwx 1 root root 69 Jul 26 2007 /dev/rmt/0m -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:m lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0mb -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:mb lrwxrwxrwx 1 root root 71 Jul 26 2007 /dev/rmt/0mbn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:mbn lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0mn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:mn lrwxrwxrwx 1 root root 69 Jul 26 2007 /dev/rmt/0n -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:n lrwxrwxrwx 1 root root 69 Jul 26 2007 /dev/rmt/0u -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:u lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0ub -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:ub lrwxrwxrwx 1 root root 71 Jul 26 2007 /dev/rmt/0ubn -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED],0:ubn lrwxrwxrwx 1 root root 70 Jul 26 2007 /dev/rmt/0un -> ../../devices/[EMAIL PROTECTED],600000/SUNW,[EMAIL PROTECTED]/[EMAIL PROTECTED],0/[EMAIL PROTECTED] From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Martin Ruslan Sent: Monday, February 25, 2008 11:45 PM To: Justin Piszcz Cc: [email protected] Subject: Re: [Veritas-bu] LTO tapes handling more that it supposed Dear Justin, sounds make sense for the hardware compression. but, I never set the hardware compression on the NBU. Did the compression do it self without any configuration triggered? I mean, is it running automatically for few types of files or datas? And this is happening not to all tapes.. only few tapes.. some is oracle database, and some is windows flatfile. @Simon: hopefully not David Copperfield who make strange thing happens on my backup.. :) @everyone: So this is normal if it's a database backup? (specially oracle). just trying to describe all the inputs.. :) Rgrds, Martin On Mon, Feb 25, 2008 at 7:04 PM, Justin Piszcz <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote: On Mon, 25 Feb 2008, Martin Ruslan wrote: > Dear gurus, > have you ever meet this condition? > My LTO3 tapes handling more than 800GB (about 1.2TB) on the media's report. > I don't have any idea for this.. The backup not running the compression > also.. > Is it maybe the block size or something? Need your advice.. > > Regards, > Martin > The tape drive does compression. We see upwards of 3.0++ to 1 in some cases. Justin.
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