Thread View: comp.sys.hp.hardware
8 messages
8 total messages
Started by Dr. Albert Hybl
Thu, 25 Jul 1996 00:00
Need information about DAT drives
Author: Dr. Albert Hybl
Date: Thu, 25 Jul 1996 00:00
Date: Thu, 25 Jul 1996 00:00
27 lines
1525 bytes
1525 bytes
I serfed into www.megahaus.com to look at their SCSI tape backup offerings. They have a 4mm DAT drive made by HP [C1533AI] having a 4Gig native/8Gig compressed capacity, with 60MB/min sustained transfer rate and 3 1/2" x 1.6" high form factor. That would fit my need. I called HP's presale number to request additional specifications for that drive but only received information about the "HP SureStore Tape 6000" series of DAT drives. Under the heading 'Ordering Information', I see the item 'C1528F HP SureStore Tape 6000i'. It matches the capacity and sustained transfer rates given for the C1533AI model. Can someone familiar with HP DAT drives please explain the difference between the models. How do 4mm DAT drives compare with 8mm models (like Exabyte)? How reliable are these devices? Does the Linux kernel support a device driver for these DAT drives? What Linux compatible software can be used for creating backups? Thank you, Albert (ahybl@umabnet.ab.umd.edu)
Re: Need information about DAT drives
Author: David Lerner
Date: Sat, 27 Jul 1996 00:00
Date: Sat, 27 Jul 1996 00:00
27 lines
1637 bytes
1637 bytes
In article <4t83n8$8i9@umbc7.umbc.edu>, hybl@umbc.edu (Dr. Albert Hybl) wrote: > [snip] > How do 4mm DAT drives compare with 8mm models (like Exabyte)? > > How reliable are these devices? > > Does the Linux kernel support a device driver for these DAT drives? > What Linux compatible software can be used for creating backups? > The operating system does not differentiate between 4mm and 8mm drives. The same drivers and backup programs handle both kinds of drives. On some of the systems that I use the drives are daisy chained together. On Linux, as with other Unix systems tar is the most popular tape backup program. Cpio is another "built in" unix program that can create tape archives. Taper is a recent contribution to the Linux community. It offers additional features, but I have not had a chance to look into it. Reliability of both kinds of tape backup devices is excellent for drives that I use at work. I have never been unable to read a tape. However, I have occasional problems with a 7-year-old Exabyte 8200 tape drive that I use at home. David Lerner <dsl@zai.com>
Re: Need information about DAT drives
Author: Bernd Richter
Date: Sun, 28 Jul 1996 00:00
Date: Sun, 28 Jul 1996 00:00
20 lines
1296 bytes
1296 bytes
hybl@umbc.edu (Dr. Albert Hybl) wrote: >Can someone familiar with HP DAT drives please explain the difference >between the models. The HP1533A is the OEM Modell and the HP SureStore6000i ist the same but as brand mark modell from HP. There is no technical difference only a difference in support and what you will find in the box. The OEM Modells comes with nothing just the drive and (if you are lucky) with a small paper for instructions. The HP SureStore Modells comes with Handbooks, mounting equipment, Software, a Tape, a Cleaning Tape and the full HP support and warranty. ..but be carefull HP will not do *any* end user support/warranty for OEM Modells... -- Greetings from Hannover,Germany Bernd Richter -> richter@mail.h.provi.de
Re: Need information about DAT drives
Author: Michael Faurot
Date: Mon, 29 Jul 1996 00:00
Date: Mon, 29 Jul 1996 00:00
39 lines
2067 bytes
2067 bytes
Dr. Albert Hybl (hybl@umbc.edu) wrote: : Can someone familiar with HP DAT drives please explain the difference : between the models. Can't help you here. : How do 4mm DAT drives compare with 8mm models (like Exabyte)? As I understand it, Exabyte holds the leash (patent) on the 8mm tape transport technology, and thus pretty much owns the 8mm data market. To the best of my knowledge all 8mm data drives are made by Exabyte. Contrast 4mm technology, which is not owned by Exabyte, thus there's more competition and thus costs are lower. Media costs are pretty inexpensive too, a 90 meter tape is usually only about $9-$10 at someplace like MicroCenter. Not sure what the 8mm prices are as I only use 4mm. ;-) : How reliable are these devices? I own two older HP 4mm models and have been using one for several years, the other about 6 months. Both have worked flawlessly. : Does the Linux kernel support a device driver for these DAT drives? Yes, it's just the standard SCSI tape driver. : What Linux compatible software can be used for creating backups? Anything that can write to the SCSI tape device driver. cpio, tar, dd, etc. -- +----------------+-------------------------+---------------------------------+ | Michael Faurot | mfaurot@phzzzt.atww.org | I programmed COBOL in college. | | ------- ------ | ------- ------ ---- --- | But I never compiled . . . :-) | +----------------+-------------------------+---------------------------------+
Re: Need information about DAT drives
Author: amk
Date: Tue, 30 Jul 1996 00:00
Date: Tue, 30 Jul 1996 00:00
27 lines
1626 bytes
1626 bytes
David Lerner (zetan@cpcug.org) wrote: : In article <4t83n8$8i9@umbc7.umbc.edu>, hybl@umbc.edu (Dr. Albert Hybl) wrote: : > : [snip] : > How do 4mm DAT drives compare with 8mm models (like Exabyte)? : > : > How reliable are these devices? : > : > Does the Linux kernel support a device driver for these DAT drives? : > What Linux compatible software can be used for creating backups? : > Before using 8mm, we used native HP DAT drives that were shipped with our boxes. We recently moved to 8mm because of a HUGE increase in online capacity and quite frankly I do not want to go back to 4mm. Not that they are/were unreliable, but there is no comparision in throughput. 8mm are FASTER than 4mm with more capacity per tape. However, the 8mm Exabytes that we use require far more frequent cleanings than the 4mm. -------------------------------------- Tony Kruse SysAdmin Ford Vehicle Operations Emissions Lab Allen Park, Mi USA akruse1@ford.com --------------------------------------
Re: Need information about DAT drives
Author: Shane Seymour
Date: Sun, 04 Aug 1996 00:00
Date: Sun, 04 Aug 1996 00:00
27 lines
1800 bytes
1800 bytes
Bernd Richter wrote: > > hybl@umbc.edu (Dr. Albert Hybl) wrote: > > >Can someone familiar with HP DAT drives please explain the difference > >between the models. > The HP1533A is the OEM Modell and the HP SureStore6000i ist the same > but as brand mark modell from HP. There is no technical difference > only a difference in support and what you will find in the box. > The OEM Modells comes with nothing just the drive and (if you are > lucky) with a small paper for instructions. > The HP SureStore Modells comes with Handbooks, mounting equipment, > Software, a Tape, a Cleaning Tape and the full HP support and > warranty. > ..but be carefull HP will not do *any* end user support/warranty for > OEM Modells... > > -- > Greetings from Hannover,Germany > Bernd Richter -> richter@mail.h.provi.de We order the HP1533A directly from HP when we buy systems and they have no problems with supporting them. They've even replaced one of them three times and have an escalation going because on of our G40s gets I/O errors writing to any DDS2 drive. Shane
Re: Need information about DAT drives
Author: Reinhold J. Gerharz
Date: Fri, 09 Aug 1996 00:00
Date: Fri, 09 Aug 1996 00:00
28 lines
1585 bytes
1585 bytes
amk@ba0024.ba.ford.com (amk) wrote: >David Lerner (zetan@cpcug.org) wrote: >: In article <4t83n8$8i9@umbc7.umbc.edu>, hybl@umbc.edu (Dr. Albert Hybl) wrote: >: > >: [snip] >: > How do 4mm DAT drives compare with 8mm models (like Exabyte)? >: > >: > How reliable are these devices? >: > >: > Does the Linux kernel support a device driver for these DAT drives? >: > What Linux compatible software can be used for creating backups? >: > >Before using 8mm, we used native HP DAT drives that were shipped with our boxes. >We recently moved to 8mm because of a HUGE increase in online capacity and quite >frankly I do not want to go back to 4mm. Not that they are/were unreliable, but >there is no comparision in throughput. 8mm are FASTER than 4mm with more capacity >per tape. However, the 8mm Exabytes that we use require far more frequent cleanings >than the 4mm. Just out of curiosity, did you consider Digital Linear Tape? If so, what was your opinion of it? Thanks, RG
Re: Need information about DAT drives
Author: Wolfgang Schelongowski
Date: Fri, 09 Aug 1996 00:00
Date: Fri, 09 Aug 1996 00:00
24 lines
1488 bytes
1488 bytes
In <DvCCwC.AvG@bri.hp.com> aslater@jocko.bri.hp.com (Al Slater) writes: >Dr. Albert Hybl (hybl@umbc.edu) wrote: >[snip] >: Does the Linux kernel support a device driver for these DAT drives? >: What Linux compatible software can be used for creating backups? >Hmm. Interesting point. The answer here is generally yes. However, I'd >qualify it by saying we don't support Linux currently and the last >time I looked at the scsi tape driver, it was not exactly 'wired for DAT'.. >That said, there shouldn't be anything stopping you... how it does the >DC on/off via device file I'd need to RTFS, which is one of the bits that >probably needs tweaking.. You can do that and a few other things with mt-dds from dds2tar package (my version: dds2tar-2.4.12). -- Wolfgang Schelongowski ws@xivic.ruhr.de One person with a good diff can change the world. /r$
Thread Navigation
This is a paginated view of messages in the thread with full content displayed inline.
Messages are displayed in chronological order, with the original post highlighted in green.
Use pagination controls to navigate through all messages in large threads.
Back to All Threads