suggestion for a disk-to-disk backup server

2007-06-25 Thread Rudy Setiawan
Hi all, I am trying to create backup servers out of the following specs: P4 3.0Ghz 1GB RAM RAID0 - 750GB x 2 (SATA) Hosts to backup: about 20 hosts with roughly 100GB each host. What will be the complications and the limitations? And also what are the recommendations? Thank you. Regards,

infofile update failed

2007-06-25 Thread Toomas Aas
Hello! I'm running a single-server configuration of Amanda 2.5.1p2 on FreeBSD 6.2. Recently I added a new DLE. The next amdump run this DLE got dumped, but this message was in the report: driver: FATAL infofile update failed (hostname.com,'newDLE') The FAQ-o-Matic says that this is

Re: infofile update failed

2007-06-25 Thread Olivier Nicole
driver: FATAL infofile update failed (hostname.com,'newDLE') From top of my headf, I think it happens each time you add a DLE, but shoul dnot happen later. First time you add and dump a DLE, update should fail because there is not yet such info file. Olivier

software compression vs hardware compression

2007-06-25 Thread Cyrille Bollu
Hi all, I just wanted to share my experience. I'm usually using hardware compression on my backup server (because all data to be backuped ,1.2TB, are local) to save it some CPU. As a result my backup were going quite fast (about 4 hours) but the load balancing was far from my expectation

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Olivier Nicole
RAID0 - 750GB x 2 (SATA) Hosts to backup: about 20 hosts with roughly 100GB each host. So you have 20*100= 2TB to backup on 750GB My mistake, you have 1.5 TG of backup space. What will be the complications and the limitations? Limitation is clear, you deon't have enough backup

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Olivier Nicole
Just taking into consideration of compression effect? In fact compression depends on your data, do you know how much they compress? Full/incr depends on your data, how your disks are full, how much data you need to do incr every day? Try to use the reverse approach: what data you cannot afford

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Cyrille Bollu
[EMAIL PROTECTED] a écrit sur 25/06/2007 08:49:59 : RAID0 - 750GB x 2 (SATA) Hosts to backup: about 20 hosts with roughly 100GB each host. So you have 20*100= 2TB to backup on 750GB In RAID0 750GB x 2 = 1,5TB But still that isn't enough. I would suggest you to buy something that could

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Rudy Setiawan
Yes I do understand that and I didnt mention the number of backup servers. Is it a recommendation of 1.5TB (raid-0 750x2) to backup the maximum of 10 to 12 hosts? or will that be too much of a backup server to do all the 10-12 hosts at once (including incremental and full)? Should it be

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Matt Hyclak
On Sun, Jun 24, 2007 at 11:43:26PM -0700, Rudy Setiawan enlightened us: I am trying to create backup servers out of the following specs: P4 3.0Ghz 1GB RAM RAID0 - 750GB x 2 (SATA) Hosts to backup: about 20 hosts with roughly 100GB each host. What will be the complications and the

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Marc Muehlfeld
Cyrille Bollu schrieb: RAID0 - 750GB x 2 (SATA) Sure you want to do a backup to a Raid0? When one disk crash, you ll loos the data. Here I use a Raid6 Array out of 15 320 GB Sata2 disks + 1 hotspare. So 4 disks can fail until i lose data. Having a recoverable backup is the most important

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Charlie Reitsma
In addition to doing everything to make sure a backup disk failure does not destroy all your backups you need to take into consideration the length of your cycle. My experience so far has been with tape and I am just beginning in the disk-to-disk with virtual tape. How long before Amanda

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Chris Hoogendyk
Charlie Reitsma wrote: The initial backup is going to be all level 0. After that the planner is going to try for a balanced mix of fulls and incrementals. Ok, I'm hijacking a thread. Sorry about that. But, really, it does fit in. I just tried something this weekend, and the above comment may

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Jon LaBadie
On Mon, Jun 25, 2007 at 12:43:50PM -0400, Chris Hoogendyk wrote: ... then I created a dumptype that was the same as my regular dumps but with record no strategy incronly I thought this would work, because the incremental would be based on ufsdump, and it would know there had been a

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Rudy Setiawan
I apologize that I didnt address my question correctly. On 6/25/07, Olivier Nicole [EMAIL PROTECTED] wrote: Just taking into consideration of compression effect? In fact compression depends on your data, do you know how much they compress? Full/incr depends on your data, how your disks are

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Marc Muehlfeld
Rudy Setiawan schrieb: With the number of hosts that I have, what are the best configuration such as, should I separate each file for each host or I can dump them into one huge file? Amanda backup every DLE into a single file, except you specify tape_splitsize. This could be usefull, if your

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Jon LaBadie
On Mon, Jun 25, 2007 at 11:10:21AM -0700, Rudy Setiawan wrote: ah sorry i pressed the sent button accidentally. thank you all for the inputs. With the number of hosts that I have, what are the best configuration such as, should I separate each file for each host or I can dump them into one

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Chris Hoogendyk
Jon LaBadie wrote: On Mon, Jun 25, 2007 at 12:43:50PM -0400, Chris Hoogendyk wrote: ... then I created a dumptype that was the same as my regular dumps but with record no strategy incronly I thought this would work, because the incremental would be based on ufsdump, and it would

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Jon LaBadie
On Mon, Jun 25, 2007 at 04:43:40PM -0400, Chris Hoogendyk wrote: Jon LaBadie wrote: On Mon, Jun 25, 2007 at 12:43:50PM -0400, Chris Hoogendyk wrote: ... then I created a dumptype that was the same as my regular dumps but with record no strategy incronly I thought this

Re: suggestion for a disk-to-disk backup server

2007-06-25 Thread Olivier Nicole
I am trying to create backup servers out of the following specs: P4 3.0Ghz 1GB RAM RAID0 - 750GB x 2 (SATA) As it was said by others, RAID 0 may not be the right choice. Virtual tapes and tapespaning allows Amanda to extend a backup across several physical disks, so you don't need RAID 0.