RE: LTO3 VS Virtual Tape.

["Lukas Beeler" <l.beeler@xxxxxxxxxxx>]

LTO4 drives are out, yes. They're 7500 CHF here (which would translate
to 6000 US$, so it's probably 3000 US$ over the pond :).

At 120MB/s, they're still muuuch slower than D2D backups.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
ChadB@xxxxxxxxxxxxxxxxxxxx
Sent: Thursday, June 14, 2007 9:40 PM
To: Midrange Systems Technical Discussion
Subject: RE: LTO3 VS Virtual Tape.


I did some basic testing when it was first available, and it's not
speedy by default unless you do the setup work that Lukas is describing
(splitting out another ask, spec'ing the right IO/arms, etc.).  Didn't
LTO4 just come out as an option?



 

             "Lukas Beeler"

             <l.beeler@datalin

             e.ch>
To 
             Sent by:                  "Midrange Systems Technical

             midrange-l-bounce         Discussion"

             s@xxxxxxxxxxxx            <midrange-l@xxxxxxxxxxxx>

 
cc 
 

             06/14/2007 03:37
Subject 
             PM                        RE: LTO3 VS Virtual Tape.

 

 

             Please respond to

             Midrange Systems

                 Technical

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             <midrange-l@midra

                 nge.com>

 

 





You can't really compare a given tape drive to Virtual Tapes without
exactly specifying what kind of IO subsystem you have for your virtual
tapes.

It would make a lot of sense to separate the virtual tapes into their
own ASP, so your reads don't interfere with your writes.

Virtual tape speed is only limited by your IO subsystem aka buy more
disks, get more speed.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Harvell, Joel
Sent: Thursday, June 14, 2007 9:18 PM
To: Midrange-l@xxxxxxxxxxxx
Subject: LTO3 VS Virtual Tape.

Has anyone done any performance comparisons between LTO3 Drives versus
Virtual tape?  I'm looking for some help with my shrinking backup
window.



Thanks







Joel B. Harvell

Food Lion, LLC

(704) 633-8250 x2709

jbharvell@xxxxxxxxxxxx




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