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 <t...@networkc.co.uk> 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 <wcplis...@gmail.com> wrote: > > > Data Domain has good market share, but very few DD customers use > > VTL. >
