Re: Hardware compression (HP DAT 40i users?)

2002-03-27 Thread Gene Heskett
On Wednesday 27 March 2002 04:07 pm, John R. Jackson wrote: >>v) Gene said: "Any partition thats that much gzipped already, >> should have the compression turned off, doing a straight tar >> of it." >>Again, I'm a newbie, and if I decided not to use tar, was not >> based on my own experience but f

Re: Hardware compression (HP DAT 40i users?)

2002-03-27 Thread Gene Heskett
On Wednesday 27 March 2002 09:03 am, Fernan Aguero wrote: >Thanks everybody for your helpful responses. All of them had >different and useful tips. I'll try to summarize and add some >comments. > >i) Regarding compression on FreeBSD: thanks John (Merryweath) for >reminding me of mt. >I have now tu

Re: Hardware compression (HP DAT 40i users?)

2002-03-27 Thread John R. Jackson
>v) Gene said: "Any partition thats that much gzipped already, should have the >compression turned off, doing a straight tar of it." >Again, I'm a newbie, and if I decided not to use tar, was not based on >my own experience but from what I've read elsewhere. Not trying to speak for Gene, but I do

Re: Hardware compression (HP DAT 40i users?)

2002-03-27 Thread Fernan Aguero
Thanks everybody for your helpful responses. All of them had different and useful tips. I'll try to summarize and add some comments. i) Regarding compression on FreeBSD: thanks John (Merryweath) for reminding me of mt. I have now turned HW compression ON && host control ON and I can manage it my

Re: Hardware compression (HP DAT 40i users?)

2002-03-26 Thread John R. Jackson
You already got some good answers from John, Joshua and Gene. I'll just fill in a couple of details. > What happens if I lie to amanda and set the length to 4mbytes? Then planner will assume it has that much space (multiplied by runtapes, if you have a changer) and treat it as an uppe

Re: Hardware compression (HP DAT 40i users?)

2002-03-26 Thread Gene Heskett
On Tuesday 26 March 2002 05:53 pm, Fernan Aguero wrote: >I'm trying to understand why amanda is only writing > approximately 19-20 GB on my DDS-4 tapes (HP C5718A, min 20GB > and up to 40GB with compression). > >Supposedly, my DAT40i drive is set from factory with hardware >compression ON, and hos

Re: Hardware compression (HP DAT 40i users?)

2002-03-26 Thread Joshua Baker-LePain
On Tue, 26 Mar 2002 at 7:53pm, Fernan Aguero wrote > ii) perhaps the compression is taking place but my tapetype > definition is wrong? The following definition was taken from the > FAQ-O-Matic, although it didn't mention the type of cartridge used: > > define tapetype HP-SURES

Re: Hardware compression (HP DAT 40i users?)

2002-03-26 Thread John Merryweather Cooper
On FreeBSD, assuming your tape is /dev/sa0 $ mt comp off will disable compression and $ mt comp on will enable compression. $ mt status will display the state of the tape drive at the moment. Read man mt for details. On Tue, 2002-03-26 at 14:53, Fernan Aguero wrote: > I'm trying to underst

Hardware compression (HP DAT 40i users?)

2002-03-26 Thread Fernan Aguero
I'm trying to understand why amanda is only writing approximately 19-20 GB on my DDS-4 tapes (HP C5718A, min 20GB and up to 40GB with compression). Supposedly, my DAT40i drive is set from factory with hardware compression ON, and host control ON. According to the documentation that came with th