Re: [Veritas-bu] NetBackup 7.1 - Windows Slow duplication Tape to Tape
2nd thing consider not duplicating from tape. They can only do one thing at a time and can end up searching for data sequentially. Consider basic disk and staging, or synthetic backup, or deduplication in combination with data life cycle policies. BasicDisk is free, and can make use of cheap local disk attached to the backup server. If you have a few 3.5" drive slots, filling them with large disks and doing a RAID0 or a concatenation with windows software raid will give you a lot of space to work with. unprotected space is probably OK, if you lose the disk you only lose the current backups that haven't been spooled to tape yet. (of course, your business requirements may vary) Since you're doing lots of simultaneous backups, 7200rpm disks are going to do a lot better than 5400. BasicDisk is also easy to set up. If you don't have the money for the better solutions, It's totally the way to go instead of multiplexing. Create a new "storage unit" under netbackup management -> storage -> storage units. There's a check box for "staging", it will automatically back up to the disk volume you give it, then spool things off to tape when the disk backup is done. It took me a few hours to get it all working, including reading a few docs. -- Dan Pritts ICPSR Computing & Network Services University of Michigan +1 (734)615-7362 ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] NetBackup 7.1 - Windows Slow duplication Tape to Tape
The standard duplication does it by "image" rather than "tape" so it seems unlikely you'd get the same multiplexing on the duplicate as you did on the original. We don't do multiplexing here because while it speeds up backups it slows down restores (and also requires more tapes). The whole reason for doing backups is to be able to restore so your planning around backups should focus on restore times as well as backup windows. Back when we had Ultrium 1 we did tape to tape replication but of course that uses more tape drives.As someone else suggested doing backups to deduplication appliances (we use both Data Domain and Quantum DXi) then duplicating that to tape is much faster and allows you to free up tape drives for duplications and restores. We've been doing that for more than 3 years now. Also although we don't do it here many of the deduplication appliances have a replication feature. That would eliminate the need for tape because you could send your replication to an offsite location over WAN rather than having to have a vendor like Iron Mountain or Recall come and pick up your tapes (and later return them). -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Bluejay Adametz Sent: Thursday, January 29, 2015 7:38 AM To: Veritas List Subject: Re: [Veritas-bu] NetBackup 7.1 - Windows Slow duplication Tape to Tape > -- How do I check for the -mpx on my bpduplicate? The entire job is run > through a GUI interface so I have never seen that option. I've only done duplications via the command line (we script our duplications), However, looking around in the Java GUI, when you get to the "Setup Duplication Variables" screen and set the destination of the copy, there's a checkbox near the bottom that says "Preserve multiplexing". - Bluejay Adametz Notice is hereby given that all notices to be given with regards to further notices will be notified in a notice to be notified in our next notice. -- NOTICE: This message, including any attachments, is only for the use of the intended recipient(s) and may contain confidential and privileged information, or information otherwise protected from disclosure by law. If the reader of this message is not the intended recipient, you are hereby notified that any use, disclosure, copying, dissemination or distribution of this message or any of its attachments is strictly prohibited. If you received this message in error, please contact the sender immediately by reply email and destroy this message, including all attachments, and any copies thereof. ___ 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] NetBackup 7.1 - Windows Slow duplication Tape to Tape
> -- How do I check for the -mpx on my bpduplicate? The entire job is run > through a GUI interface so I have never seen that option. I've only done duplications via the command line (we script our duplications), However, looking around in the Java GUI, when you get to the "Setup Duplication Variables" screen and set the destination of the copy, there's a checkbox near the bottom that says "Preserve multiplexing". - Bluejay Adametz Notice is hereby given that all notices to be given with regards to further notices will be notified in a notice to be notified in our next notice. -- NOTICE: This message, including any attachments, is only for the use of the intended recipient(s) and may contain confidential and privileged information, or information otherwise protected from disclosure by law. If the reader of this message is not the intended recipient, you are hereby notified that any use, disclosure, copying, dissemination or distribution of this message or any of its attachments is strictly prohibited. If you received this message in error, please contact the sender immediately by reply email and destroy this message, including all attachments, and any copies thereof. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
[Veritas-bu] NetBackup 7.1 - Windows Slow duplication Tape to Tape
-- How do I check for the -mpx on my bpduplicate? The entire job is run through a GUI interface so I have never seen that option. I first backup to tape and that is multiplexing so lots of jobs run at the same time. Then, I start duplication from the current tapes to new tapes. For some of the server images, it goes pretty quickly and I can actually watch the file size go up as it duplicates. Are you specifying -mpx on your bpduplicate? If you don't, the backups will be "de-multiplexed" on the copies, which mean it will have to go through the original tapes several times to pick out each backup image individually. If you use -mpx, it'll grab all the backup images in one pass and leave them multiplexed on the copies. +-- |This was sent by thomas.ander...@unither-pharma.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] NetBackup 7.1 - Windows Slow duplication Tape to Tape
> I first backup to tape and that is multiplexing so lots of jobs run at the > same time. Then, I start duplication from the current tapes to new tapes. For > some of the server images, it goes pretty quickly and I can actually watch > the file size go up as it duplicates. Are you specifying -mpx on your bpduplicate? If you don't, the backups will be "de-multiplexed" on the copies, which mean it will have to go through the original tapes several times to pick out each backup image individually. If you use -mpx, it'll grab all the backup images in one pass and leave them multiplexed on the copies. - Bluejay Adametz "Imagine that you are funded by the Universe, because you are." - Burt Goldman -- NOTICE: This message, including any attachments, is only for the use of the intended recipient(s) and may contain confidential and privileged information, or information otherwise protected from disclosure by law. If the reader of this message is not the intended recipient, you are hereby notified that any use, disclosure, copying, dissemination or distribution of this message or any of its attachments is strictly prohibited. If you received this message in error, please contact the sender immediately by reply email and destroy this message, including all attachments, and any copies thereof. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
[Veritas-bu] NetBackup 7.1 - Windows Slow duplication Tape to Tape
First make sure your data buffers are set. This can improve performance InstallPath\Veritas\NetBackup\db\config (touch files are plain text files no extensions) NUMBER_DATA_BUFFERS NUMBER_DATA_BUFFERS_RESTORE This can be a trial and error kind of thing but we use LOT3-5 and we have the data buffers set to 256. 2nd thing consider not duplicating from tape. They can only do one thing at a time and can end up searching for data sequentially. Consider basic disk and staging, or synthetic backup, or deduplication in combination with data life cycle policies. NBU 7.1 is fairly old I also suggest upgrading to the latest release to avoid possible bugs in the software. +-- |This was sent by avro...@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
[Veritas-bu] NetBackup 7.1 - Windows Slow duplication Tape to Tape
Hello, I have been pulling my hair out for a couple of weeks on this issue. I first backup to tape and that is multiplexing so lots of jobs run at the same time. Then, I start duplication from the current tapes to new tapes. For some of the server images, it goes pretty quickly and I can actually watch the file size go up as it duplicates. Then, there are server images that take forever, sometimes over two days where there can be five minutes that go by with no progress at all made with the duplication. What could be wrong? What can I look at to debug this issue? Thanks in advance for your expertise. -Tom +-- |This was sent by thomas.ander...@unither-pharma.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
