I could be shot for saying the following, but using a NFS share would provide the opportunity for you to remove the backup application and its associates hardware from the data protection stack altogether for things such as data bases which in some shops is 80% of the load.
We are avid TSM users and fans but if RMAN backups directly to NFS mounts works well it appears there would be an opportunity reducing complexity and costs. Charles -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Nobody Sent: Thursday, August 26, 2010 5:18 PM To: [email protected] Subject: Re: [ADSM-L] Data Domain: Data Domain, and SQL-Backtrack with Sybase databases The last time I checked <10% of DD customers use the VTL option. I'm willing to bet that 60-80% of those are TSM customers. The TSM folks I've talked to seem to prefer using VTL over file-type devices, which may explain that. The rest of the world (except large enterprise customers) tends to prefer NAS devices. On Thu, Aug 26, 2010 at 1:38 PM, ADSM-L <[email protected]> wrote: > Curtis, > > >> Data Domain has good market share, but very few DD customers use VTL. > > Really? That surprises me a little (i.e., the marginalised VTL usage) > and isn't necessarily representative of the TSM customers I've spoken > to or worked with using DDRs, many of whom still use the VTL > functionality. I can't comment on whether this is so much the case > with shops that use other backup software though (e.g., I know NBU has its own OST interface). > > In any case, whether through VTL or NFS/CIFS the principle is the same > and of course you're right, pre-appliance compression or even > encryption can be catastrophic to data de-dupe ratios. Without knowing > any more, it sounds like you may have to make a compromise somewhere > without changing your current config Nancy, either in terms of backup > data storage footprint or RPO. > > Cheers, > __________________ > David McClelland > London, UK > > On 26 Aug 2010, at 19:10, Nobody <[email protected]> wrote: > > > Data Domain has good market share, but very few DD customers use > > VTL. > This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed. If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately.
