The white paper I listed in my response to this thread was written by ESG. They tested the TS7560 and obtained on the order of 1400MB/sec. And Charles is correct: it is an x86 box, actually the IBM x3850 which has, perhaps, the best architecture in the class.
Kelly Lipp CTO STORServer, Inc. 485-B Elkton Drive Colorado Springs, CO 80907 719-266-8777 x7105 www.storserver.com -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Hart, Charles A Sent: Saturday, March 21, 2009 8:32 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] VTL and Dedup ( TS7569G) It works well if you understand your data and how you can push to it with in reason before you deploy another. The IBM product likes more CPU cores ... Understand these are x86 boxes... We see up to 500MBS Writes to one of our VTL's that ingests Exchange Backups via the TSM TDP. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of W. Curtis Preston Sent: Saturday, March 21, 2009 12:24 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] VTL and Dedup ( TS7569G) Funny. I would say that BAD dedupe is the enemy of throughput. There IS good dedupe. I've seen it. It hurts neither backup, nor restore performance. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Clark, Robert A Sent: Friday, March 20, 2009 4:44 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] VTL and Dedup ( TS7569G) Dedupe is an errand boy, sent by the storage industry, to collect a bill. Dedupe is the enemy of throughput. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of W. Curtis Preston Sent: Friday, March 20, 2009 4:25 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] VTL and Dedup ( TS7569G) Why do you hate all things dedupe? -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Kelly Lipp Sent: Friday, March 20, 2009 10:12 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] VTL and Dedup ( TS7569G) Funny, but I was researching the TS7650 yesterday and found this article on the IBM website. Pretty good detail about the product in a non-TSM environment. ftp://service.boulder.ibm.com/storage/tape/ts7650g_esg_validation.pdf And then this on in the TSM environment. I think this one might have been written by somebody somewhat less familiar with TSM than we would be. Seemed a little heavy handed about TSM. ftp://ftp.software.ibm.com/common/ssi/sa/wh/n/tsw03043usen/TSW03043USEN. PDF My overall impression, and I hate all things de-dup, was this is a pretty good product offering. I'm sure it's way expensive but understand there are some follow on products coming that will address the lower end of this market. Thanks, Kelly Lipp CTO STORServer, Inc. 485-B Elkton Drive Colorado Springs, CO 80907 719-266-8777 x7105 www.storserver.com -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Alex Paschal Sent: Friday, March 20, 2009 11:03 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] VTL and Dedup ( TS7569G) Hi, Sabar. I couldn't find a TS7569G via Google, but on the TS7650G, also a deduping VTL, after data goes through the factoring (dedup) algorithm it is run through a compression algorithm. You probably won't see much deduplication, but on the first backup you should see a decrease in size similar to the decrease you would see from the compression on a tape drive. Regards, Alex -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Sabar Martin Hasiholan Panggabean Sent: Thursday, March 19, 2009 5:10 AM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] VTL and Dedup ( TS7569G) Hi, Does anyone here has been implementing or know how Dedup works in TSM using TS7569G ? Let say I have 100 TB of data and backup to this VTL. On the 1st attempt of backup / full backup, will this data size decrease on the VTL BR, Martin P This message (including any attachments) is intended only for the use of the individual or entity to which it is addressed and may contain information that is non-public, proprietary, privileged, confidential, and exempt from disclosure under applicable law or may constitute as attorney work product. If you are not the intended recipient, you are hereby notified that any use, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, notify us immediately by telephone and (i) destroy this message if a facsimile or (ii) delete this message immediately if this is an electronic communication. Thank you. DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. 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