Super-D-Duper... FYI: Just checked out the HW specs on that Compaq SDLT. It's spec out to a Max of 683MB/min (native transfer rate)....so, I would say you are still max'ing out somewhere else...hard to imagine isn't it.
Also, side comment...that DL380G2 is one fine machine....Hot swappable RAM... Cheers, Leonard Lee > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Bennett, Warren > Sent: April 19, 2002 2:52 PM > To: NT 2000 Discussions > Subject: RE: Veritas backup rate? > > > After we provided the drives with enough bandwidth we were > getting better > than 600Mbytes per minute at each drive simultaneously. Which > you could > consider the upper limit of what the SDLT's can do. So after giving it > enough network bandwidth we essentially had no bottleneck in > the system. > > Here's the config: > * Compaq MSL5026 with two each of the SDLT drives for a total of 4. > * Compaq DL380G2. The G2 has 2 66Mhz slots so we used 2 dual channel > 66Mhz/64 bit SCSI controllers and attached 1 drive per channel. > * Simple raid 5 array on the server. > * Backupexec 8.6 > > > Warren J. Bennett > > > -----Original Message----- > From: Leonard Lee [mailto:[EMAIL PROTECTED]] > Sent: Friday, April 19, 2002 1:04 PM > To: NT 2000 Discussions > Subject: RE: Veritas backup rate? > > That's great info. > > At 350mb/s. Did the bottleneck move from the network card to > the backup > units? Or maybe the disk drives? What sort of drive > configuration did you > use? > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]]On Behalf Of > Bennett, Warren > > Sent: April 19, 2002 9:33 AM > > To: NT 2000 Discussions > > Subject: RE: Veritas backup rate? > > > > > > We just finished installing a new 4 drive sdlt library. We > > setup 4 large > > chunks of data on 4 different severs on the network to do throughput > > testing. We found some very interesting things during the > > tests. Basically > > we the original 100/full nic we were using was not even close > > to providing > > enough bandwidth to the drives. We attempted to team (Compaq) > > 4 nics but > > were having problems with getting the 4th to pass traffic. But every > > additional nic we added increased the throughput performance > > of the library. > > We then yanked those and install a gigabit fiber card. The > > total bandwidth > > being used by the 4 drives was 350mb/s. > > > > > > Warren J. Bennett > > > > > > -----Original Message----- > > From: Bendall, Paul (KBPB) [mailto:[EMAIL PROTECTED]] > > Sent: Monday, April 08, 2002 3:41 AM > > To: NT 2000 Discussions > > Subject: RE: Veritas backup rate? > > > > We are using the Netbackup software from Veritas and achieve > > about 10GB per > > hour from our fileservers, this is to a SDLT robot. The > > biggest thing we > > saw, after disabling anti-virus was making sure all Netcoms > > equipment, NIC, > > switches, etc were set to 100 full-duplex, if anything was > > left at auto > > sensing we got awful transer rates. > > > > Regards, > > > > Paul > > > > -----Original Message----- > > From: Douglas, Josh D. [mailto:[EMAIL PROTECTED]] > > Sent: 03 April 2002 18:23 > > To: NT 2000 Discussions > > Subject: RE: Veritas backup rate? > > > > > > I average about 110 mb/min (if the target computer is on the > > same switch as > > the backup server). We get 8-10 mb/min if we try to back > > something up from > > a computer on the same stack but different switch. We have > > 3com superstack > > 3300 and we think that it is because of different firmware > > versions between > > the switches in the stack. This has taken awhile to pin down > > and Veritas > > said that the speed would have nothing to do with them and to > > check the > > network. We don't seem to have any network issues other than > > backing up. We > > are upgrading our switches later this week so if this helps > > us I will post > > the results > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > > Sent: Wednesday, April 03, 2002 11:18 AM > > To: NT 2000 Discussions > > Subject: Veritas backup rate? > > > > > > Is anybody using Veritas Backup Exec 8.6 and if so, what is > > you approximate > > backup rate? (For example 30 MB/min) > > > > I seem to be getting about 10 to 15 MB /min, regardless of > > what type of > > hardware I use. > > > > Windows 2000 Server > > SP 2 > > Veritas Backup Exec 8.6 > > > > Dual P3 800 Mhz > > 512 MB RAM > > 2 SCSI U160 IBM Hard Drives > > Adaptec U39160 > > Adaptec 2940U2 > > > > Benchmark VS Tape 640 > > > > > > ------ > > You are subscribed as [EMAIL PROTECTED] > > Archives: http://www.swynk.com/sitesearch/search.asp > > To unsubscribe send a blank email to %%email.unsub%% > > > > ------ > > You are subscribed as [EMAIL PROTECTED] > > Archives: http://www.swynk.com/sitesearch/search.asp > > To unsubscribe send a blank email to %%email.unsub%% > > > > > > This email and any files transmitted with it are intended > > solely for the > > addressee(s) and may be legally privileged and/or > > confidential. If you have > > > > received this email in error you may not copy, forward or use > > the contents, > > attachments or information in any way. 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