Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!ogicse!cvedc!mcspdx!adphdw20!dtb From: dtb@adpplz.UUCP (Tom Beach) Newsgroups: comp.periphs.scsi Subject: Re: Which DAT: Archive or Wangtek ? Summary: The Archive is faster. Keywords: DAT Message-ID: <784@adphdw20.UUCP> Date: 5 Jun 91 16:15:09 GMT References: <29162@neptune.inf.ethz.ch> Followup-To: comp.periphs.scsi Organization: ADP Dealer Services R&D, Portland, OR Lines: 48 In article <29162@neptune.inf.ethz.ch>, probst@iiic.ethz.ch (Probst) writes: > I'm about to buy a DAT-drive for a Sun 4/75, but I am > not yet decided which one. Do you know something about the following > drives? > > Archive Python, Model 4330XT in a case from Artecon Inc. > (Artecon Model TD-4100 DAT Drive) > or > > Wangtek, (1.3 GB), I don't know the model number. > Actually they're both 1.3 GB, or 2 GB denpending upon which tape you use. I had an opportunity to evaluate both of these drives on a Motorola 88000 platform. I did a cpio copy of a large file system to tape. This was a dedicated machine. e.g. no other users so the processor was able to keep the drives streaming. i don't have a record of the size of the filesystem but here are the test results: Archive 2060 Tape : 11:00 min Archive 2150 Tape : 9:30 Archive 2525 Tape : 6:16 Wangtek 525MB Tape: 6:00 Archive DAT : 5:25 Wangtek DAT : 10:40 Exabyte 8mm : 5:25 I was surprised to find so much difference between the 2 DAT drives but repeating the tests didn't change the results. Granted that the Motorola drivers weren't optimized for either drive. Motorola does not support a DAT at this time. With software drivers tuned for the particular drive you have these results might change. Still, it's real data! Tom B Standard disclaimer: These results do not represent the official position of either ADP or Motorola. ------------------------------------------------------------------------ | Tom Beach : Sr Project Engineer : Mass Storage Technology | | phone : (503) 294-1541 | | email : uunet : dtb@adpplz.uucp | | ADP Dealer Services, ADP Plaza, 2525 S.W. 1st Ave, Portland OR, 97201 | ------------------------------------------------------------------------