2 tape drives?

2007-08-08 Thread Cyrille Bollu
Hi, I just would like to know if Amanda is able to write 2 tapes at the same time to improve tape dumping speed. (For those who remember, I'm planing to buy a Dell TL2000 which can be configured with 2 SAS tape drives) Best regards, Cyrille

tar dumps, performance

2007-08-08 Thread Brian Cuttler
Solaris 9, Amanda 2.4.4, gtar 1.15.1, gzip 1.3.5 A query, We recently switched to tar rather than ufsdump for a large partition on one of our systems (Thanks Jon LaBadie for working through the exclude lists with me) and dumps are working well, in terms of fitting on the tapes. We had a problem

Re: 2 tape drives?

2007-08-08 Thread Dustin J. Mitchell
On Wed, Aug 08, 2007 at 10:11:12AM +0200, Cyrille Bollu wrote: Hi, I just would like to know if Amanda is able to write 2 tapes at the same time to improve tape dumping speed. (For those who remember, I'm planing to buy a Dell TL2000 which can be configured with 2 SAS tape

Re: 2 tape drives?

2007-08-08 Thread Cyrille Bollu
Sorry, I don't understand; This thread doesn't seem to speak about writing on 2 tapes at the same time (like RAIT but without the redundancy). Thanks though, Cyrille [EMAIL PROTECTED] a écrit sur 08/08/2007 15:44:30 : On Wed, Aug 08, 2007 at 10:11:12AM +0200, Cyrille Bollu wrote: Hi,

Re: tar dumps, performance

2007-08-08 Thread Jon LaBadie
On Wed, Aug 08, 2007 at 09:10:58AM -0500, Dustin J. Mitchell wrote: On Wed, Aug 08, 2007 at 09:09:50AM -0400, Brian Cuttler wrote: What really happens when GTAR INDEXING is enabled ? Briefly, the client 'tees' the tar output to another invocation of tar with the -t (table of contents)

Re: tar dumps, performance

2007-08-08 Thread Dustin J. Mitchell
On Wed, Aug 08, 2007 at 09:09:50AM -0400, Brian Cuttler wrote: What really happens when GTAR INDEXING is enabled ? Briefly, the client 'tees' the tar output to another invocation of tar with the -t (table of contents) option, which lists each file in the dump, one per line. That information is

Re: ssh tunneling from wherever

2007-08-08 Thread Chris Hoogendyk
Steve Newcomb wrote: Mitch Collinsworth [EMAIL PROTECTED] writes: On Tue, 7 Aug 2007, Dustin J. Mitchell wrote: All in all, it sounds like a lot of work, unless this is a months-long conference :) I agree. Changing a working backup configuration in order to handle a

Re: 2 tape drives?

2007-08-08 Thread Dustin J. Mitchell
On Wed, Aug 08, 2007 at 04:08:19PM +0200, Cyrille Bollu wrote: Sorry, I don't understand; This thread doesn't seem to speak about writing on 2 tapes at the same time (like RAIT but without the redundancy). The original question was the same, and the answer was that you can do that

Re: 2 tape drives?

2007-08-08 Thread Dustin J. Mitchell
On Wed, Aug 08, 2007 at 11:11:47AM -0400, Jean-Francois Malouin wrote: The original question was the same, and the answer was that you can do that with RAIT with the third (parity) drive set to /dev/null, although that has certain disadvantages, too. Don't want to hijack the thread but...

Re: tar dumps, performance

2007-08-08 Thread Brian Cuttler
Jon, On Wed, Aug 08, 2007 at 11:24:03AM -0400, Jon LaBadie wrote: On Wed, Aug 08, 2007 at 11:09:34AM -0400, Brian Cuttler wrote: Somehow I don't see my manager ok'ing reenable of the index function to perform a scientific test. Indexing is not an all or none situation, it is a

HP DAT 160 tapetype

2007-08-08 Thread Rory Beaton
Someone was asking for this recently and the FAQ threw a tantrum when I tried to add it. Anyway...this is the output of amatapetype for a Hewlett Packard DAT 160 USB that we recently acquired. Is it common to see a zero length filemark value? define tapetype HP_DAT160 { comment HP DAT

Re: 2 tape drives?

2007-08-08 Thread Kai Zimmer
Hi Cyrille, as far as i know (may me outdated meanwhile), it is possible to run two instances of amanda (two configs) with different tape drives at once... best, Kai

Re: 2 tape drives?

2007-08-08 Thread Jean-Francois Malouin
* Dustin J. Mitchell [EMAIL PROTECTED] [20070808 11:05]: On Wed, Aug 08, 2007 at 04:08:19PM +0200, Cyrille Bollu wrote: Sorry, I don't understand; This thread doesn't seem to speak about writing on 2 tapes at the same time (like RAIT but without the redundancy). The original

Re: 2 tape drives?

2007-08-08 Thread Jon LaBadie
On Wed, Aug 08, 2007 at 04:08:19PM +0200, Cyrille Bollu wrote: [EMAIL PROTECTED] a ?crit sur 08/08/2007 15:44:30 : On Wed, Aug 08, 2007 at 10:11:12AM +0200, Cyrille Bollu wrote: Hi, I just would like to know if Amanda is able to write 2 tapes at the same time to improve

Re: HP DAT 160 tapetype

2007-08-08 Thread Stefan G. Weichinger
Rory Beaton schrieb: Someone was asking for this recently That was me, thanks. and the FAQ threw a tantrum when I tried to add it. You mean, the FOM (FAQ-O-Matic)? Stefan

Re: ssh tunneling from wherever

2007-08-08 Thread Jon LaBadie
On Wed, Aug 08, 2007 at 10:10:31AM -0400, Chris Hoogendyk wrote: Mitch Collinsworth [EMAIL PROTECTED] writes: Which is why it would be really nice to have a different triggering method for performing backups on roaming laptops. Something that begins with the laptop calling in to

Re: tar dumps, performance

2007-08-08 Thread Brian Cuttler
Jon, Gene, Dustin, Actually I don't know that we need indexing on this box, Its a Lotus Notes server, so any file that it touched by its owner or receiving email will be backed up in its entirety, and some of these files are big. It would be nice if I understood things better though as we have

Re: HP DAT 160 tapetype

2007-08-08 Thread Geert Uytterhoeven
On Wed, 8 Aug 2007, Rory Beaton wrote: Someone was asking for this recently and the FAQ threw a tantrum when I tried to add it. Anyway...this is the output of amatapetype for a Hewlett Packard DAT 160 USB that we recently acquired. Is it common to see a zero length filemark value?