cancel
Showing results for 
Search instead for 
Did you mean: 

DLT vs. LTOII

SOLVED
Go to solution
Nobody's Hero
Valued Contributor

DLT vs. LTOII

Doing and ROI for moving from DLT to LTO II.

Does anyone know how much a DLT backs up per minute on average VS. LTOII?

UNIX IS GOOD
11 REPLIES
Jeff_Traigle
Honored Contributor
Solution

Re: DLT vs. LTOII

Depends which DLT you mean. The following site indicates DLT7000 trasnfer rate of 5MBps with 35GB native capacity.

http://www.zsource.com/PRODUCTS/Quantum/Quantum_DLT7000/quantum_dlt7000.html

The following site indicates LTO II has a transfer rate of 30MBps and 200GB native capacity.

http://www.manucomp.com/sun_catalogue/storedge_l8500.html

(There are probably hP pages that show the same thing, but this is what I found with a quick Yahoo! search.)
--
Jeff Traigle
Pete Randall
Outstanding Contributor
Paul F. Carlson
Valued Contributor

Re: DLT vs. LTOII

Which DLT drives/media are you using? It depends on your drive and whether is DLTIV, SuperDLT, etc.

Try looking and Quantum's web site, they have a lot of documentation and compatibility guides there:

http://www.quantum.com/ServiceandSupport/CompatibilityGuides/Index.aspx
Link down -- cable problem?
Ivan Ferreira
Honored Contributor

Re: DLT vs. LTOII

A SDLT usually have a NATIVE performance of 16.0MB/s.

LTO-1 15.0MB/s NATIVE

LTO-2 35.0MB/s NATIVE

LTO-3 80MB/s NATIVE
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
Patrick Wallek
Honored Contributor

Re: DLT vs. LTOII

Have a look at this chart. This should answer your questions.

http://www.trivad.com/comparison.html

Tom Ward_1
Honored Contributor

Re: DLT vs. LTOII

One more for the list:
http://www.backupcentral.com/hardware-drives.html

This lists older drives as well. Not that you need that now, but it may come in handy sometime.

Regards,
Tom
Ray Ball
Frequent Advisor

Re: DLT vs. LTOII

I suggest forgetting about the transfer rate and concentrate on the reliability. We moved from SCSI DLT7000 to Fiber Optic LTO2 and found our lives got MUCH MORE PRODUCTIVE because we no longer had tons of problems to wrestle with on a daily basis. I would NEVER recommend anyone use DLT unless they had no other option available to them. If you have the opportunity to go with LTO2, GO FOR IT!
Cass Witkowski
Trusted Contributor

Re: DLT vs. LTOII

With the TL891/2 we could get about 9.1 MB/s. Testing Ultrium 2 448 drives we were seeing about 39.5 MB/s.

Alzhy
Honored Contributor

Re: DLT vs. LTOII

Sorry to be a fly on other folks' ointment but you may as well take a look at factors like backward compatibility. I am sure for compliance's sake you will still be required to have the ability to read and restore your thousands of DLT media.

The DLT camp has the adavantage of being able to still read your old DLT tapes while bringing you the speed and capacity of its newer generation drives. I think current generation DLTs now gives the LTO camp serious competition in the speed and capacity arenas.
Hakuna Matata.
aleks mindlin
Frequent Advisor

Re: DLT vs. LTOII

What kind of autoloader are you using?
David Ruska
Honored Contributor

Re: DLT vs. LTOII

For the records:

> The DLT camp has the adavantage of being
> able to still read your old DLT tapes
> while bringing you the speed and
> capacity of its newer generation drives.

It depends on your defination of "old DLT" and "newer generation" drives. The latest drive is the SDLT600, and it will not read DLT40/70/80 tapes (only SDLT 220, SDLT320, and VS160).

> I think current generation DLTs now
> gives the LTO camp serious competition
> in the speed and capacity arenas.

SDLT600 = 300GB at 36MB/s native.
Ultrium960 = 400GB at 80MB/s native.

both transfer rates (and capacities) double at 2:1 compression.

Not sure if that's serious competition or not.
The journey IS the reward.