A couple of things that I did not see mentioned here which I experienced was.... for Data Domain the VTL is an additional license and it does limit the available mount points (or emulated drives), where a TSM file based pool does not. Like Wanda stated earlier depends what you can afford !
I myself have grown fond of using the file based approach, easy to manage, easy to configure, and never worry about an available tape drive (virtual or otherwise). The lan-free issue is something to consider but from what I have heard lately is that it can still be accomplished using the file based storage. If anyone has any info on it I would appreciate it. ~Rick Jax, Fl. -----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.