Re: [Veritas-bu] Backup speeds Windows servers
IBM 435? I like the sound of thatI just bought a couple V40zs Paul -- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: January 7, 2007 6:23 PM To: Bobby R Windle Cc: veritas-bu@mailman.eng.auburn.edu; [EMAIL PROTECTED] Subject: Re: [Veritas-bu] Backup speeds Windows servers 47 MB/sec for a windows SAN media server with SCSI attached library with LTO2 drives. The rest ran at around 12-15 MB/sec on a 1GB network. Servers were IBM 435s and SUN V40zs. BTW the SUNs made the IBMs look like 286s. La version française suit le texte anglais. This email may contain privileged and/or confidential information, and the Bank of Canada does not waive any related rights. Any distribution, use, or copying of this email or the information it contains by other than the intended recipient is unauthorized. If you received this email in error please delete it immediately from your system and notify the sender promptly by email that you have done so. Le présent courriel peut contenir de l'information privilégiée ou confidentielle. La Banque du Canada ne renonce pas aux droits qui s'y rapportent. Toute diffusion, utilisation ou copie de ce courriel ou des renseignements qu'il contient par une personne autre que le ou les destinataires désignés est interdite. Si vous recevez ce courriel par erreur, veuillez le supprimer immédiatement et envoyer sans délai à l'expéditeur un message électronique pour l'aviser que vous avez éliminé de votre ordinateur toute copie du courriel reçu. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
47 MB/sec for a windows SAN media server with SCSI attached library with LTO2 drives. The rest ran at around 12-15 MB/sec on a 1GB network. Servers were IBM 435s and SUN V40zs. BTW the SUNs made the IBMs look like 286s. Bobby R Windle [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 06/01/2007 12:27 AM To veritas-bu@mailman.eng.auburn.edu cc Subject Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu National Australia Bank Ltd - ABN 12 004 044 937 This email may contain confidential information. If you are not the intended recipient, please immediately notify us at [EMAIL PROTECTED] or by replying to the sender, and then destroy all copies of this email. Except where this email indicates otherwise, views expressed in this email are those of the sender and not of National Australia Bank Ltd. Advice in this email does not take account of your objectives, financial situation, or needs. It is important for you to consider these matters and, if the e-mail refers to a product(s), you should read the relevant Product Disclosure Statement(s)/other disclosure document(s) before making any decisions. If you do not want email marketing from us in future, forward this email with unsubscribe in the subject line to [EMAIL PROTECTED] in order to stop marketing emails from this sender. National Australia Bank Ltd does not represent that this email is free of errors, viruses or interference.___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a. Using brocade 2g ports 48000 director. b. IBM Ultrium LTO Gen2 drives c. Sun branded Qlogic 2gb cards. single port feeding each tape drive. d. The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
I have noticed that we usually get 10-15MB on our Solairs servers and about 6-7MB on windows. Our connections are 1G in all cases. Like you I don't know why. (Windows is windows...?) = Carl Stehman IT Distributed Services Team Pepco Holdings, Inc. 202-331-6619 Pager 301-765-2703 [EMAIL PROTECTED] Bobby R Windle [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 01/05/2007 08:27 AM To veritas-bu@mailman.eng.auburn.edu cc Subject Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Pepco Holdings, Inc. or its affiliates (PHI). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies. PHI policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. PHI will not accept any liability in respect of such communications. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
Are these LAN clients or SAN Media Servers or what? I can get close to 30MB/s from HP DL360/380 G3s from local disks via the onboard GigE card. IF I'm only running a single job Paul -- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bobby R Windle Sent: January 5, 2007 8:28 AM To: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026 La version française suit le texte anglais. This email may contain privileged and/or confidential information, and the Bank of Canada does not waive any related rights. Any distribution, use, or copying of this email or the information it contains by other than the intended recipient is unauthorized. If you received this email in error please delete it immediately from your system and notify the sender promptly by email that you have done so. Le présent courriel peut contenir de l'information privilégiée ou confidentielle. La Banque du Canada ne renonce pas aux droits qui s'y rapportent. Toute diffusion, utilisation ou copie de ce courriel ou des renseignements qu'il contient par une personne autre que le ou les destinataires désignés est interdite. Si vous recevez ce courriel par erreur, veuillez le supprimer immédiatement et envoyer sans délai à l'expéditeur un message électronique pour l'aviser que vous avez éliminé de votre ordinateur toute copie du courriel reçu. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
We get between 6MB/sec and 12MB/sec on single streams going to a NB 6.0 MP3 server running Solaris 10 over the LAN. The data gets staged to the SAN and then gets backed up to LTO2 drives. I have noticed a significant increase in backup speed with BroadCOM copper GB adapters by simply upgrading the Microsoft provided driver to a Broadcom driver. We currently like version 9.81d. It's kind of hit/miss with broadcom, some versions of the driver seem to work better than others. This http://seer.support.veritas.com/docs/242918.htm document helps you gage the backup disk speed on you're NB client. It's particularly useful in ruling out the local drives as a bottleneck. Bobby R Windle [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 01/05/2007 07:36 AM To veritas-bu@mailman.eng.auburn.edu cc Subject Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
Hi There, There are a number of issues that may cause the Windows backup to slow down. 1. Make sure you do not have tracker.exe running 2. Ensure that all networks a set to full duplex. Some NIC's cannot be set to 1000 full duplex. Rather set these to 100 full in that case (Nic's and Switch) 3. Make sure that all servers are set not to scan for virus when a file is opened on the server. ( no sense in this if the incoming file was scanned) Big cause of data backing up slowly. 4. Make sure that you have the correct firmware on both the tapes and library. 5. Use iperf to test your network speed. 6. Lower your logging These are but a few items that may cause a backup to be slow. You can find iperf @ http://dast.nlanr.net/Projects/Iperf/ Good luck. Regards, Clem Kruger Listen to what is said, not he who speaks Arabian Proverb Telkom SA Ltd ITS Infrastructure Storage Management : +27 (12) 680 3102 : +27 (12) 680 3299 : +27 (83) 326 2260 : [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: 05 January 2007 15:57 PM To: Bobby R Windle Cc: veritas-bu@mailman.eng.auburn.edu; [EMAIL PROTECTED] Subject: Re: [Veritas-bu] Backup speeds Windows servers I have noticed that we usually get 10-15MB on our Solairs servers and about 6-7MB on windows. Our connections are 1G in all cases. Like you I don't know why. (Windows is windows...?) = Carl Stehman IT Distributed Services Team Pepco Holdings, Inc. 202-331-6619 Pager 301-765-2703 [EMAIL PROTECTED] Bobby R Windle [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 01/05/2007 08:27 AM To veritas-bu@mailman.eng.auburn.edu cc Subject Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Pepco Holdings, Inc. or its affiliates (PHI). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies. PHI policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. PHI will not accept any liability in respect of such communications. ~~ This e-mail and its contents are subject to the Telkom SA Limited e-mail legal notice available at http://www.telkom.co.za/TelkomEMailLegalNotice.PDF ~~attachment: image004.jpg attachment: image003.jpg attachment: image002.jpg attachment: image001.jpg ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
Ok ok, enough with all the winblows bashing. =P We're running something similar to your config here. MCData 4700 SAN Switches HP LTO3 Drives Qlogic 4Gb cards FC Attached Hitachi AMS500 (Next get Tagmastore I think) Dell 2950's The best backup times I've seen over gigabit to gigabit Ethernet are 45MB/sec. But your configuration and data contents are going to vary that number greatly. Using the same hardware and configurations I've got all kinds of windows boxes that run at all kinds of different speeds. I'm having trouble getting my file servers better than 20MB/sec because of all the small files, but my Oracle Database servers easily push 30MB/sec or better. My fastest backup is an Oracle DB and I think with SAN tuning I can get that into the 60MB/sec range. -Jonathan From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bobby R Windle Sent: Friday, January 05, 2007 8:28 AM To: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026 ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
Bobby, You may also want to check if your NIC on windows server is throttled down by Windows by default. I have heard about this that Windows by default will throttle down to some very low throughput. Please check further into it. Muhammad Shafi Senior Unix Admin - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bobby R Windle Sent: January 5, 2007 8:28 AM To: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026 ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
A important thing to consider is file system fragmentation and number and size of files, which may impactseverely on performance. In order to check this, try to create a single big file (2 GB, for example) and create a test policy to backup only that file. Under normal conditions, on a idle system/network, you should be able to get over 50 MB/s. On 1/5/07, M S [EMAIL PROTECTED] wrote: Bobby, You may also want to check if your NIC on windows server is throttled down by Windows by default. I have heard about this that Windows by default will throttle down to some very low throughput. Please check further into it. Muhammad Shafi Senior Unix Admin - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bobby R Windle Sent: January 5, 2007 8:28 AM To: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L. Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026 ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
You may also want to try these things (I found some of these in a forum from a search on Google): 1) On a windows system, check to see if tracker.exe is running. If it is, kill it. This will release some I/O on the filesystems. You can also check to see if it is started up at boot time and turn that off: Start-Run-msconfig (hit enter) Go to the Startup tab and uncheck the tracker.exe 2) On the client, touch the file /Install Path/netbackup/dont_sort_dir 3) In the client's bp.conf, add this: LOCKED_FILE_ACTION = SKIP From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Edson Noboru Yamada Sent: Friday, January 05, 2007 10:07 Cc: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Backup speeds Windows servers A important thing to consider is file system fragmentation and number and size of files, which may impactseverely on performance. In order to check this, try to create a single big file (2 GB, for example) and create a test policy to backup only that file. Under normal conditions, on a idle system/network, you should be able to get over 50 MB/s. On 1/5/07, M S [EMAIL PROTECTED] wrote: Bobby, You may also want to check if your NIC on windows server is throttled down by Windows by default. I have heard about this that Windows by default will throttle down to some very low throughput. Please check further into it. Muhammad Shafi Senior Unix Admin - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bobby R Windle Sent: January 5, 2007 8:28 AM To: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Backup speeds Windows servers I'm curious to hear what kind of speeds (mbs/sec) others are getting backing up windows servers. Running Netbackup Enterprise 5.1 mp6 under Solaris10 on master/media servers. a.Using brocade 2g ports 48000 director. b.IBM Ultrium LTO Gen2 drives c.Sun branded Qlogic 2gb cards. single port feeding each tape drive. d.The storage on the windows servers is FC attached Hitachi Tagmastore 9990. (Very fast drive configuration.) e. Servers are HP G5's also 64 bit. Some are 32 bit. Seems 32 bit servers are actually faster. note: Some of my other backups such as Solaris, Linix and Netware can get as much as 20 mb/sec with this configuration. So why are the windows servers so slow? Any one have some kind of idea what may be a cause? Or it is what it is! Windows! Bobby Windle ( Data backup Recovery ) W.L . Gore associates, Inc. [EMAIL PROTECTED] cell : (302) 588-7374 (preferred) office: (302) 292-4026 ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup speeds Windows servers
On 1/5/2007 12:06 PM, Edson Noboru Yamada wrote: A important thing to consider is file system fragmentation and number and size of files, which may impactseverely on performance. Absolutely. Lots and lots of litle files with a standard policy will *kill* you in performance In order to check this, try to create a single big file (2 GB, for example) and create a test policy to backup only that file. Under normal conditions, on a idle system/network, you should be able to get over 50 MB/s. We see 60-70MB/sec regularly using FlashBackup on Windows while backup over a GigE network to an LTO-3 drive (through a Decru encryption appliance). We set network buffer sizes to 132096. On other clients that have to walk the file system, we can see pretty dismal performance. Try to backup from the client to the null device. Instructions are on the Veritas support site and in this list's archive. That will tell you how fast you're reading the file system using the NetBackup tools. If you can't read it off of disk fast enough, then NetBackup isn't going to be doing much for you. .../Ed -- Ed Wilts, Mounds View, MN, USA mailto:[EMAIL PROTECTED] ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
