The one drop-dead difference is that if you want to do LAN-Free, the target has to be a tape (or tape-emulating) device. Can't use TSM filepools.
If you replicate between VTL's, it's transparent to TSM, but you have to have the same vendor hardware at both sites. Dedup may also be faster with a VTL, if your VTL does it in-line. Also a VTL is often quicker to set up (which doesn't necessarily mean it is easier to maintain, if you consider firmware updates, multiple maintenance contracts, etc.) TSM 6.2 has to dedup as part of the reclaim process, post-data-landing-there. That isn't necessarily a bad thing, it's just a different way. To get replication of the deduped data, you have to set up a second/copy pool yourself; but it does not have to be the same hardware on both ends. There is nothing about having a VTL/VTL gateway that inherently means you can do fewer concurrent backups than with a TSM filepool, depends on your hardware. You can have a fast VTL or a slow crappy VTL, just depends on what you pay for... -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Tim Brown Sent: Monday, September 26, 2011 4:05 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] vtl versus file systems for pirmary pool What advantage does VTL emulation on a disk primary storage pool have as compared to disk storage pool that is non vtl ? It appears to me that a non vtl system would not require the daily reclamation process and also allow for more client backups to occur simultaneously. Thanks, Tim Brown Systems Specialist - Project Leader Central Hudson Gas & Electric 284 South Ave Poughkeepsie, NY 12601 Email: tbr...@cenhud.com <<mailto:tbr...@cenhud.com>> Phone: 845-486-5643 Fax: 845-486-5921 Cell: 845-235-4255 This message contains confidential information and is only for the intended recipient. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, please notify the sender immediately by replying to this note and deleting all copies and attachments.
