We're using 256K buffer size and 512 buffers. We use Maxell brand tapes. How long was it before you started to have problems due to tape head wear?
We only use tapes for off-site vaulting of backups. We initially write to disk, then duplicate to tape. What I think helps us most is that we are 10G ethernet front to back, and have a dedicated 10G VLAN for backup traffic between the media servers and DataDomain and multiple connections between them. -- Jack Forester, Jr. Sr. Data Protection Administrator Global Technology Services - AHS Mylan, Inc. 5005 Greenbag Road Morgantown, WV 26501 [email protected] Phone: +1.304.554.6039 Cell: +1.412.805.5313 From: "David McMullin" <[email protected]> To: "[email protected]" <[email protected]> Date: 12/05/2011 09:25 AM Subject: Re: [Veritas-bu] Robot inquiry/poll/how well does your robot/s work? Sent by: [email protected] Jack - what size buffer parameters are you using with your LTO-5? We have had to replace virtually ALL our LTO-5 drives due to tape head wear - what brand of tapes do you use? Agree regarding performance, in fact the limiting factor is more often non-drive, i.e. hba, or source system just can't send data fast enough. ------------------------------ Message: 4 Date: Fri, 2 Dec 2011 14:35:59 -0500 From: [email protected] Subject: Re: [Veritas-bu] Robot inquiry/poll/how well does your robot/s work? To: "Justin Piszcz" <[email protected]> Cc: [email protected], "'Lightner, Jeff'" <[email protected]>, [email protected] Message-ID: <of91026d3a.b0a62e8a-on8525795a.0069c55a-8525795a.006ba...@myl.com> Content-Type: text/plain; charset=iso-8859-1 I've used mostly the big library iron: ... removed for space... Extending this discussion, what about tape drives? We've just started using IBM LTO-5 drives earlier this year and have been blown away with their performance and capacity. Haven't had to replace any yet. Our LTO-3 drives have been solid performers regardless of manufacturer. STK T9940A/B. Nice, reliable enterprise class drives. Didn't require us to buy new tapes when moving from the A to B series. STK T10000 - Bought some of these at a former employer, but left before they could be installed. Heard they were great drives. DLT/SDLT - Meh. -- Jack Forester, Jr. Sr. Data Protection Administrator Global Technology Services - AHS Mylan, Inc. 5005?Greenbag?Road Morgantown,?WV?26501 [email protected] Phone: +1.304.554.6039 Cell: +1.412.805.5313 _______________________________________________ Veritas-bu maillist - [email protected] http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ============================================================================== CONFIDENTIALITY NOTICE: This e-mail message and all attachments transmitted with it may contain legally privileged, proprietary and/or confidential information intended solely for the use of the addressee. If you are not the intended recipient, you are hereby notified that any review, dissemination, distribution, duplication or other use of this message and/or its attachments is strictly prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message and its attachments. Thank you. ============================================================================== _______________________________________________ Veritas-bu maillist - [email protected] http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
