Here's a little paper on dedup, granted it is a sponsored piece but it has some good points.
http://media.techtarget.com/searchDataBackup/downloads/July_2010_Data_dedupe_essential_guide.pdf John W. Cook System Administrator Partnership For Strong Families 5950 NW 1st Place Gainesville, Fl 32607 Office (352) 244-1610 Cell (352) 215-6944 MCSE, MCP+I, MCTS, CompTIA A+, N+, VSP4, VTSP4 -----Original Message----- From: Paul Hutchings [mailto:[email protected]] Sent: Friday, February 04, 2011 3:00 PM To: NT System Admin Issues Subject: RE: Dedupe Thoughts? Fair point on the flexibility, it just seemed a little costly for a "poor mans" solution. My own personal opinion, stick with an aux copy on tape for that warm fuzzy feeling when you're standing in the burning embers and need to know you've access to a good backup (or when the disks fail or you mess up) - once the d2d backup is done your backup window doesn't matter so you can take as long as you like to do the aux copy to tape. Do check out how BE does dedupe and synthetic full backups - one of the big selling points of D2D and dedupe is this "incremental forever" business where you take your initial known, good, full backup, and from that point onwards you only ever take incrementals and let the backup software construct fulls from your initial full, plus the incrementals. -----Original Message----- From: Roger Wright [mailto:[email protected]] Sent: 04 February 2011 19:53 To: NT System Admin Issues Subject: Re: Dedupe Thoughts? Yep, definitely would want to exit the tape scene as soon as possible. I was really looking at the Synology for the flexibility of either eSATA or NAS connectivity. There may be even more cost-effective solutions, but we've had great luck so far with the one Synology NAS we purchased. Roger Wright ___ "The internet is a great way to get on the net." - Bob Dole On Fri, Feb 4, 2011 at 2:27 PM, Paul Hutchings <[email protected]> wrote: > How come you're looking at NAS rather than just shovelling a few 2tb > drives in your backup server? > > I'm looking into doing something very similar myself (we use > Commvault/Simpana) and the rule of thumb on disk space, assuming > you're not paying per Tb stored, is disk is cheap, and with dedupe > rates what they are for average data, you'd be mad not to shovel in as > much as you can afford and leave tape as the very last resort. > > -----Original Message----- > From: Roger Wright [mailto:[email protected]] > Sent: 04 February 2011 18:08 > To: NT System Admin Issues > Subject: Dedupe Thoughts? > > I'm looking at some options for a "poor man's" deduplication system > for backups. A Data Domain or Exagrid solution would be preferred but > not feasible at this time. > > We're currently backing up a little over 4 TB to LTO3 tape and have > outgrown our backup window, library capacity, and RTO. > > I'm thinking of using BE 2010's Deduplication option for the engine > and something like the Synology DS1511+ with 5 - 2GB drives for 8 TB > of storage (w/RAID5 or just a hot spare). Then I could offload to > tape for off-site storage or script replication to another unit at a > branch office. > > Any best practices thoughts for sizing the storage for the deduped data? > Does it just depend on the ratio achieved and the storage and the > number of backup sets retained? One nice thing about the Synology > system is it can be easily expanded to up to 15 disks. > > A Data Domain or Exagrid solution would be preferred but not feasible > at this time. > > > Roger Wright > ___ > > "The internet is a great way to get on the net." - Bob Dole > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ > <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin > > > -- > MIRA Ltd > > Watling Street, Nuneaton, Warwickshire, CV10 0TU, England Registered > in England and Wales No. 402570 VAT Registration GB 100 1464 84 > > The contents of this e-mail are confidential and are solely for the use of > the intended recipient. If you receive this e-mail in error, please delete > it and notify us either by e-mail, telephone or fax. You should not copy, > forward or otherwise disclose the content of the e-mail as this is prohibited. > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ > <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin CONFIDENTIALITY STATEMENT: The information transmitted, or contained or attached to or with this Notice is intended only for the person or entity to which it is addressed and may contain Protected Health Information (PHI), confidential and/or privileged material. Any review, transmission, dissemination, or other use of, and taking any action in reliance upon this information by persons or entities other than the intended recipient without the express written consent of the sender are prohibited. This information may be protected by the Health Insurance Portability and Accountability Act of 1996 (HIPAA), and other Federal and Florida laws. Improper or unauthorized use or disclosure of this information could result in civil and/or criminal penalties. Consider the environment. Please don't print this e-mail unless you really need to. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
