We had a very similar situation where we have backups running for 3 days. We were getting very good thru put but just the volume of data getting backed up was killing us. We had Mutliplexing enable which helped but still running for days. We just implemented Multisteaming on our bigger servers, assuming you have the data carved up by drive letters, mutlisteaming works GREAT, what NBU will do is takes each drive letter and creates separate jobs so C: / D: / E: etc all get backed up simultaneously. It took our 3 day backup down to only 21 hours.
Now if you are looking into Disk Staging, then you will need to assign your policies to the disk storage group. Then subsequently use the Staging Schedule under that storage unit to send the disk staged data to tape. You will want to ensure you have enough disk storage to handle the task. Once the data is sent to tape, NBU will assign each image with a ds prefix. This way NBU knows that the data was sent to tape and in the event your disk becomes full or hits your high water mark, NBU will remove the oldest .ds file first. The .ds is also used when your job retention period has come and gone. NBU will go in a delete the .ds files when they expire. Thanks Dan -----Original Message----- From: Chris Freemantle [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 22, 2007 11:17 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Storage Unit Recommendations Is you backup speed limited by the drives, or by the speed of the clients and or network? I don't know what drives you have, but using a very simplistic view, your backup of 14TB in 2 1/2 days "only" averages out to 68MB/sec, or 17 MB/sec spread evenly over 4 drives. Obviously it won't be spread evenly either in time or drives, but we can do a similar sized full backup in a similar time using one LTO-3 drive. The killer is the incrementals. Data transfer rate for the incrementals are really quite poor, down to about 2MB/sec for some clients, in contrast to to the fulls where they are limited by their 100Mb network connection. best [EMAIL PROTECTED] wrote: > I'm getting it done right now, about 14 TB starting friday at 6 pm till > Monday at 6:00 am but it is tight. We only have a few Oracle RMAN backups > right now but we are getting ready to move about 4 TB of Oracle from being > a cold file level backup to RMAN. > > > > > Brian Hesseling > Storage Administrator > American Modern Insurance Group > 7000 Midland Blvd. > Amelia, OH 45103 > PH: 513.947.6821 > FX:513.388.5117 > > > > > [EMAIL PROTECTED] > net > To > 08/21/2007 01:32 [EMAIL PROTECTED], > PM veritas-bu@mailman.eng.auburn.edu > cc > > Subject > Re: [Veritas-bu] Storage Unit > Recommendations > > > > > > > > > > > You are about 12 tape drives short for backing up that number of clients > with SQL and Oracle and 250 clients. > > If your datamover can back up straight to tape, you are much better off > attaching it direct and getting the NDMP agent. > > You will be in a constant fight to get your backups done. > > Bobby. > > > > -------------- Original message -------------- > From: [EMAIL PROTECTED] > > > > > I am looking for recommendations are configuring storage units. Right > now > > the setup is: > > > > Master server is directly fiber attached to the library as the robotic > > control, and directly fiber attached to 2 drives in the library. Media > > server is directly fiber attached to the other 2 drives in the library. > My > > storage units are one for the master with two drives in it and one for > the > > media with the other two drives. All of my policies are defined for > their > > storage units as Any Available. I am looking to improve the performance > of > > my backups, I have 250 clients, with some SQL, Oracle, and NDMP agents > > sprinkled in. > > > > Should I break these up in to individual storage units for each drive > and > > the n recombine them into storage groups of one 4 unit group, two 2 unit > > > groups, and four 1 unit groups. Then assign the groups directly to the > > policies? Does that gain me anything? > > > > If I want to begin using disk staging do I need to change all of the > > policies from any available to either the disk storage unit or a tape > unit? > > > > > > Brian H. > > > > > > ----------------------------------------- > > CONFIDENTIALITY STATEMENT: > > This e-mail transmission contains information that is intended to > > be confidential. It is intended only for the addressee named > > above. If you receive this e-mail in error, please do not read, > > copy, or disseminate it. If you are not the intended recipient, > > any disclosure, copying, distribution or use of the contents of > > this information is prohibited. Please reply to the message > > immediately by informing the sender that the message was > > misdirected. After replying, please erase it from your computer > > system. Your assistance in correcting this error is appreciated. > > _______________________________________________ > > Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu > > -- Chris Freemantle Data Manager Wellcome Trust Centre for Neuroimaging +44 (0)207 833 7496 _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu This message (including any attachments) contains confidential information intended for a specific individual and purpose, and is protected by law. 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