So for a rough comparison at ~ 35 MBs (megabytes) per second for LTO access. Then FW at 800 Mbs (megabits) per second yields 100 MBs ( megabytes) per second. That would be better than 2 times faster. Esata at 3 Gbs (gigabits) per second yields 375MBs ( megabytes) per seconds. That would be ~ 10 time faster. These are theoretical rates for FW and Esata assuming the sata drives in the enclosures don't create any bottleneck. Does this math make sense?
--- In Avid-L2@yahoogroups.com, Dylan Reeve <dylan@...> wrote:
>
> Compression doesn't really apply to our application. It's based on what is
> effectively Zip compression. It is relevant for business use where files are
> usually uncompressed and largely text, so a 2:1 compression ratio is
> realistic. For video files we'd get no benefit from compression. Ignore the
> compressed size entirely when considering video or other already compressed
> binary file formats.
>
> Dylan Reeve
> http://dylanreeve.com/
>
>
> On Tue, Mar 1, 2011 at 8:15 PM, johnrobmoore <bigfish@...> wrote:
>
> >
> >
> >
> > I noticed the drives are 800 GB or 1600 GB compressed. How much does the
> > compression slow access?
> >
> > --- In Avid-L2@yahoogroups.com, Bogdan Grigoresco <bogdan_grigorescu@>
> > wrote:
> > >
> > > expect around 30-40MB/s transfer rates which translates in ~2GB/minute
> > > heavily depends on how many and how large the files are.
> > >
> > > If you opt for verification, transfer times will essentially double.
> > >
> > > cheers,
> > > Bogdan Grigoresco
> > > www.finale.tv
> > >
> > > --- On Tue, 3/1/11, Benjamin Hershleder <Ben@> wrote:
> > >
> > > From: Benjamin Hershleder <Ben@>
> >
> > > Subject: Re: [Avid-L2] LTO access time?
> > > To: Avid-L2@yahoogroups.com
> > > Date: Tuesday, March 1, 2011, 5:04 AM
> > >
> > >
> > >
> > > Great question John. I too await input from those using both LTO4 as well
> > as LTO5.
> > >
> > >
> > > Benjamin Hershleder
> > > http://ContactBen.com
> > > http://Hershleder.com
> > >
> > > Wear It In Post!
> > > Fun T-shirts, mousepads, mugs & more
> > > for Post Production Professionals
> > > http://www.WearItInPost.com
> > >
> > > On Feb 28, 2011, at 6:47 PM, John Moore wrote:
> > >
> > > > Curious about the real world use of LT04 backup. We have LTO Ultrium
> > 4 product line offers 800GB (1600GB compressed) Fujifilm tapes for out unit
> > which is handled by out of house engineers. What is the time frame to
> > archive 300GB to tape and then what is the retrieval time? I know LTO from
> > an engineering stand point is considered more reliable but given the time it
> > takes to organize the retrieval process, the additional cost for bare drives
> > over the LTO tape cost seems more reasonable. What are the real time
> > considerations for backup and retrieval?
> > > >
> > > > John Moore
> > > >
> > > > Barking Trout Productions
> > > >
> > > > Studio City, CA
> > > >
> > > > bigfish@
> >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > >
> > > Search the offical complete Avid-L archives at:
> > http://archives.bengrosser.com/avid/
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
No comments:
Post a Comment