Dougs a little off (sounds like about 2 year old info :)
4mm (DDS3) does 12G w/o compression
8mm (8900) does 20G w/o compression
8mm (AIT) does at leaset 25G w/o compression, and a claimed compression of
2.5:1 (i've actually seen it get 2.0:1 where most drives that claim that
only get about 1.5:1)
DLT (7000) does 35G w/o compression
AIT and DLT are comparable speed-wise, both achieving over 5MB/s. DLT's
speed do drops off dramatically if you can't actually feed it data fast
enough. But, their tapes will last a very very long time (very little wear
because the tape path is almost straight reel-reel and the tape heads
aren't spinning against the tape)
The VXA looks like it's using a type of 8mm similar to the mammoth tapes
(which might even work in it), getting 33G on a $1300 drive.
Do, as Doug suggests, consider the media cost, but get current prices.
DDS-2 tapes cost $8-10 for 8G native capacity, the mammoth tapes are
around $90 for a 20G native capacity (and nearly 4x speed).
AIT is cheaper than DLT both in drive and media costs,and the size I
quoted wa the AIT-1 drive, the AIT-2 is probably 35G native, I couldn't
hit Sony's site to tell you.
On Tue, 21 Sep 1999, Doug McLaren wrote:
> On Tue, Sep 21, 1999 at 02:59:35PM -0500, Brandon W. Beasley wrote:
>
> | Have I asked this before -- hope not.
> |
> | Please give your recs for a tape drive w/ 10gig capacity.
> | Running on linux box of course.
>
> First of all, SCSI is the only way to go if you're serious.
>
> This knocks out most of the tape drives you're going to find at
> CompUSA, unfortunately.
>
> But it leaves basically four classes of tape drives -
>
> qic 150 (not all of them are SCSI, however)
> 4mm/DAT
> 8mm
> DLT
>
> qic 150's are antiquated, and the tapes cost a fortune now, and they
> only hold up to 250mb per tape (with special tapes). Not what you
> want.
>
> 4mm/DAT drives hold 1.3, 2.0 or 4.0gb of data, depending on which
> drive and tape you get.
>
> 8mm drives hold 2.3 or 5gb of data, depending on which drive you get.
> There are also newer ones that you may find that hold 7.0gb of data.
>
> DLT's hold 15gb, 20gb or 40gb I think, depending on drive and tape.
>
> The most cost effective of this group is probably the 8mm tape drives
> (but be sure you don't get the older 2.3gb models.) 4mm DAT drives
> are good too, but they do hold less and the tapes can cost more.
>
> DLTs are the modern choice, but you'll pay for them. They're also
> *fast*.
>
> Here's a quick table for you -
>
> capacity speed cost/tape
> qic150 150mb 100k/s? $20
> qic150 250mb 100k/s? $30
> 4mm 1.3gb 250k/s $4
> 4mm 2.0gb 500k/s $5
> 4mm 4.0gb 500k/s $12
> 8mm 2.3gb 250k/s $5
> 8mm 5.0gb 500k/s $5
> 8mm 7.0gb 500k/s? $15
> DLT 15gb+ 2000k/s+? $50+?
>
> There are other options that I've not included. I've probably made
> some mistakes - this is all from memory.
>
> That all being said, I love my 4mm and 8mm drives :)
>
> --
> Doug McLaren, [EMAIL PROTECTED]
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