Hello, E2K , Single SG, 4 DBs + PF DB, Databases on Raid5 JBOD, LTO Ultrium on local SCSI, NT Backup
I've been moving to a new server recently and getting over 2GB /min. on the DBs: Backup Type: Normal Backup started on 10/6/2003 at 12:58 PM. Backup completed on 10/6/2003 at 1:11 PM. Directories: 7 Files: 18 Bytes: 36,855,126,586 Time: 13 minutes and 36 seconds Brent -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Moore, David K Posted At: Tuesday, October 07, 2003 12:46 PM Posted To: MS Exchange List Conversation: Backup limits with Exchange 2000 and the ESE Subject: RE: Backup limits with Exchange 2000 and the ESE Ben - The 25GB/hr or ~500MB/min limit is what I pulled from Microsoft (though the references are not detailed, hence the question) so I presumed it to be correct. Here is one link that states "Hardware compression on the tape device boosts backup speeds. For example, the maximum speed you can write to a digital linear tape 35/70 GB equates to around 20 GB per hour. A typical Exchange database can usually be backed up at 25 to 30 GB per hour, although the physical speed of writing to the tape remains the same (20 GB per hour). The device is able to accept data at a faster rate and compress it into a 20-GB-per-hour stream to the tape.": http://www.microsoft.com/technet/treeview/default.asp?url=/technet/prodt echnol/exchange/exchange2000/reskit/part4/c12design.asp >From Dell there is something simular "Exchange 2000 will reduce throughput, since the average backup/restore application programming interface (API) throughput is approximately 32 GB/hour because of the Extensible Storage Engine (ESE).": http://www.dell.com/us/en/biz/topics/power_ps2q02-houback.htm Could you give me more details of what "850 MB/min" is exactly? How many SG's are you backing up? Thanks, David Moore Chevron Phillps Chemical -----Original Message----- From: Ben Winzenz [mailto:[EMAIL PROTECTED] Sent: Monday, October 06, 2003 3:47 PM To: Exchange Discussions Subject: RE: Backup limits with Exchange 2000 and the ESE I don't buy that. I am using BE 9.0 and I get throughput of ~850MB/min - across the wire. That would theoretically allow me to back up 400GB in 8 hours. My backup of a 22GB database takes 26 min. Far and away the limiting factor will be the throughput of the SCSI card to the backup device. The limiting factor will not be Exchange. Your SCSI card may support U160, but the tape drive probably won't. Factors that WILL limit backup throughput would be the type of software, the firmware on the SCSI card and backup drives. Keep in mind though, that when dealing with database limits, you really can't have a database larger than what will fit on a single tape. I'm pretty sure that the largest tapes are still SDLT 160/320. The Exchange DB's are already compressed somewhat, so you won't get 320gb on a tape. I'm guessing more like 240 maybe? Ben Winzenz Network Engineer Gardner & White (317) 581-1580 ext 418 -----Original Message----- From: Moore, David K [mailto:[EMAIL PROTECTED] Posted At: Monday, October 06, 2003 3:27 PM Posted To: Exchange (Swynk) Conversation: Backup Software for Exchange 2000 Subject: Backup limits with Exchange 2000 and the ESE I am having some problems locating documentation that shows what the limit of the ESE is for backups. What little I can find says that the ESE can only put out about 25-30 GB/hr (~500 MB/min). Can anyone tell me: * What IS the limit of the ESE to provide data (assuming that hardware is not the limiting factor) * Is the "ESE limit" for all storage groups (if backing up in parallel) or a limit on each backup session If 500 MB/min is the limit of Exchange, then it really makes the issue of "unlimited stores" a mute issue as you can only keep as much data on a server as can be backed up in the backup window. As an example: 3000 # of Users 102 Average Size of mailbox (MB) 300 gb 307200 mb 8 Backup Window in Hours 480 Backup Window in Minutes 1 Number of Exchange servers 640 # of MB/min required to backup Exchange 640 MB/min is "above" the 500 MB/min cut off. So, technically you could not have a single server with 3,000 users, with 100mb mailboxes and still back it up in 8 hours or less. Any comments? David -----Original Message----- From: Andy Grafton [mailto:[EMAIL PROTECTED] Sent: Thursday, August 07, 2003 7:02 AM To: Exchange Discussions Subject: RE: Backup Software for Exchange 2000 Some observations: I now get 550Mb/min using BackupExec 8.6 against Exchange 2K (store backup, not BLB) - perhaps the limiting factor is the 100MBit net card. The Exchange server has 16Gb of stores on a PIII 600 with 768Mb RAM and Raid 1 data disks. The backup server is a PIII 450. When we were using single-drive DLT, I was lucky to get 200Mb/min, even with decent drivers. We changed to using removeable disks as backup media (basically using disks as tapes) and the speeds shot up although the rest of the setup remained the same. All the best, Andy > -----Original Message----- > From: Paul kondilys [mailto:[EMAIL PROTECTED] > Sent: 6. august 2003 22:34 > To: Exchange Discussions > Subject: RE: Backup Software for Exchange 2000 > > Wow, how are you doing the gig a minute? I have a 160GB backup and it > takes almost 24 hours on Veritas 8.6. It really slows down when it > hits the mailboxes though. Do you have the drive mounted directly to > the exchange server? > > Thanks, > Paul > > -----Original Message----- > From: Pillai, Raj [mailto:[EMAIL PROTECTED] > Sent: Wednesday, August 06, 2003 4:14 PM > To: Exchange Discussions > Subject: RE: Backup Software for Exchange 2000 > > > A Gig a minute, really? Using Backup exec 8.6? Are you using a remote > agent or is it a local backup ?(backup device connected to your > exchange server). > I have a 35GB backup and verification process which takes > approximately > 3 hours using BE 8.6 with remote agent. > > Raj > > -----Original Message----- > From: Woodruff, Michael [mailto:[EMAIL PROTECTED] > Sent: Wednesday, August 06, 2003 3:00 PM > To: Exchange Discussions > Subject: RE: Backup Software for Exchange 2000 > > > I can backup at well over a gig a minute, not sure what you are using. > > -----Original Message----- > From: Paul kondilys [mailto:[EMAIL PROTECTED] > Sent: Wednesday, August 06, 2003 3:52 PM > To: Exchange Discussions > Subject: RE: Backup Software for Exchange 2000 > > Yeah have to agree...Veritas 8.6 works great. Just make sure your IS > is not that big or you'll be in for a long backup process.... > > Paul > > -----Original Message----- > From: Thakkar, Nick [mailto:[EMAIL PROTECTED] > Sent: Wednesday, August 06, 2003 3:39 PM > To: Exchange Discussions > Subject: RE: Backup Software for Exchange 2000 > > We use Verits Backup Exec 8.6 works well....have restored Information > Stores...does brick level also. > > Nick Thakkar > Network Administrator > American Medical Response > [EMAIL PROTECTED] > 209-993-6974 > > > -----Original Message----- > From: Bridges, Samantha [mailto:[EMAIL PROTECTED] > Sent: Wednesday, August 06, 2003 12:36 PM > To: Exchange Discussions > Subject: Backup Software for Exchange 2000 > > Hello All. > > What kind of backup software do you use for Exchange 2000? Need to do > brick levels too. I know...management wants the brick levels....tried > talking them out of it. > > Thanks > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t > ext_mode=& > lang=english > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t > ext_mode=& > lang > =english > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t > ext_mode=& > lang=english > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t > ext_mode=& > lang=english > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > ************************************************************** > ************** > ** > This e-mail message, including any attachments, contains information > that is > > confidential, may be protected by the attorney/client or other > applicable privileges, and may constitute non-public information. > This message is intended to be conveyed only to the designated > recipient(s). > If you are not > the intended recipient of this message, do not read it; please > immediately notify the sender that you have received this message in > error and delete this message.Unauthorized use, disclosure, > dissemination, distribution, reproduction of this message or the > information contained in this message or the taking of any action in > reliance on it is strictly prohibited and may be unlawful. > Thank you for your cooperation. > ************************************************************** > ************** > ** > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t > ext_mode=&lang > =english > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t > ext_mode=&lang=english > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
