DDS-3 speeds (was RE: ailing DAT drive)

[O'Donnell, Dan (NBC)]

What range of data transfer rate do you get with that DDS-3?
Is it fast enough to warrant a SCSI accelerator (F, F/W, U or U2)?


 on Friday 3/31/2000 Don Foy wrote:
 I use a 7600 with a LaCie DDS-3 drive attached and get good results
 (remembering to clean the heads every 15 hours or so). Ours cost about
 $1,000 US direct from LaCie
 http://www.lacie.com/scripts/backup/backup.cfm.
 DDS 3 tapes cost about $25. These drives have hardware 
 compression and I
 back up almost everything we have every night on them.
 
 We backup about 25 GB a night.
 
 You probably need to get past the nubus Mac and get into PCI. 
 Even a 6400 or
 7500 will do and you can put fast ethernet on it pretty cheap 
 and get a lot
 of backup for your money.


Daniel O'Donnell
NBC 2000
3000 W. Alameda Ave.
Burbank CA 91523
818.840.6610 (voice)
818.840.3390 (fax)

Because e-mail can be altered electronically,
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Re: DDS-3 speeds (was RE: ailing DAT drive)

[Don Foy]

on 3/31/2000 1:30 PM, O'Donnell, Dan (NBC) at Dan.O'[EMAIL PROTECTED] wrote:

 What range of data transfer rate do you get with that DDS-3?
 Is it fast enough to warrant a SCSI accelerator (F, F/W, U or U2)?


Because of differing drive speeds and the difference in content, we get as
little as 10 mb/minute on one really slow drive and as much as 110 mb/minute
on one of the Fast-Wide drives. All of this is across the network because we
use a dedicated Retrospect server.

The servers being backed up are 8600/300's with F internal (may be F/W, I'd
have to check the documentation)  and one with Adaptec F/W card and F/W
externals.

Our DDS-3 is a standard SCSI interface (no F, F/W or otherwise). I would
guess (This is only a guess) that if your DDS-3 has a fast SCSI interface,
it would work faster, but the tape speed may be the limiting factor here. I
don't have any evidence either way.

Don

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