RE: Compression and speed
on 7/13/00 8:00 PM, retro-talk at [EMAIL PROTECTED] wrote: I'm not sure it's going to happen. I've been *begging* for this for over a year. I'd LOVE to know, given a set of circumstances (such as number of clients, backup sessions, backup set size, processor speed, number of processors, etc), what kind of performance I might expect. It would help when preparing to purchase Retrospect for Windows servers... As it is, I somewhat blindly chose rather "huge" servers (and blindly chose the number of servers) to ensure maximum performance (minimum file matching times, etc). How do I know if I went overboard? I don't, but I spent a *bundle* of money just to ensure I didn't undershoot my goals. Brad. -Original Message- From: Jeffry C. Nichols [mailto:[EMAIL PROTECTED]] Sent: Thursday, July 13, 2000 9:43 AM To: retro-talk Subject: Compression and speed With all this talk of compression, speed, different drives, etc., would it be possible for someone at Dantz to set up a database that Retrospect users could contribute to with the purpose of documenting the different systems and their performance? At a minimum, it could include backup computer type, backup device used, connection type (SCSI, USB, Firewire), typical backup speeds as reported in the log file, and most importantly, footnotes to problems/solutions that people have tried or used to improve their own backup. A simple database with a web interface of sorts would be easy to set up for this purpose. If anybody is interested, I may have some free time to work on something over the next month and a half or so. -- Seth D. Mattinen [EMAIL PROTECTED] http://roller.reno.nv.us/ PGP Key: http://seth.mattinen.org/pgp.php There are two sides to every story. Every story has an end. -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
Compression and speed
Client licenses are now stored in Retrospect's License Manager. If you had old-style Retrospect Clients with activator codes, then the License Manager automatically knows how many client licenses (i.e., a 10-pack) you already have. When you forget a client computer, the License Manager makes that license available for a new client system to be logged in. To add more Retrospect Clients, you can now just enter a license code into License Manager. So you said and so I hoped it to be. I had free numbers but still two computers demanded the same serial. It's solved by using "a poor mans installer", simpley copying the settings from the old machine and re installing the client on one machine and now it works. --- I tried to back up without any security or compression, still I just got some 67 MB/min at the most and I think that's too slow. Or rather, I expected it to be faster, but it's OK. I truelly don't care that much if it takes 2 or 4 hours as long as it's working. All our computers are named PPC_01, PPC_02, iBook_01, PC_01 etc and they doen't say Boss' HD or similar. Second you would need a VXA drive to extract the data so I think 128 Bit encryption on top of that is really too much. Yesterday when I clicked the hardware compression, is wasn't shown in the status window, but maybe it's working anyway? Compression isna't that efficiant anyway, I get some 10 to 15%. (One can ask how the can sell tapes that will store 66 GB? That demands a compression of 50% witch for me seems more or less theoretic...) Did I miss someting here? thanx, / jakob -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
Re: Compression and speed
Thanx for your reply! The passwords are not written on a pice of paper next to the server... When it comes to speed, one thing hit me, I use the internal SCSI-1 socket. Maybe a SCSI-2 card wold speed up performance. Thank you for your advice. They are really appreachiated. thanx, / jakob -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
Compression and speed
With all this talk of compression, speed, different drives, etc., would it be possible for someone at Dantz to set up a database that Retrospect users could contribute to with the purpose of documenting the different systems and their performance? At a minimum, it could include backup computer type, backup device used, connection type (SCSI, USB, Firewire), typical backup speeds as reported in the log file, and most importantly, footnotes to problems/solutions that people have tried or used to improve their own backup. As an example, I'm currently fighting the problem of several backup clients which run faster via Appletalk than TCP/IP. Also, I'd like to know, as someone else mentioned, would it be advantageous to get a SCSI-2 or SCSI-3 card, or am I limited by the speed of the backup device itself? Just my $0.02. Jeffry C. Nichols, PhD Instructor/Lab Coordinator Rice University Biochemistry Department Houston, Texas Phone: 713-348-2660 -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
