umsmigie@ccu.umanitoba.ca (Jason Smigiel) (03/23/91)
What is the most common SCSI tape format? I've seen numbers like QIC-02, QIC-24, QIC-120, and QIC-150. I might purchase an Archive 2060s, but I want to be able to write on a tape created with the Sun 150MB tape unit we have at school on the Sun Sparc Station 1's, and then take it home and read it. What SCSI tape drive supports the required format, or which format is most common in the Unix world? Thanks for your help, Jason
ascott@fws214.intel.com (Andy Scott ~) (03/27/91)
>>>>> On 25 Mar 91 18:12:23 GMT, norcott@databs.enet.dec.com (Bill Norcott) said:
Bill> If you want to exchange tapes with Sun or other workstations, get the Archive
Bill> 2150S this is a 150 MB unit (I believe it can also write 250MB with extended
Bill> length tapes, can anyone confirm this?).
I have been looking into the portability idea between Work and Home
expressed the original poster. I called Maynard (subsidiary of Archive) recently,
and got a fax on the Archive Viper 2150S.
Yes, the 150MB and 250MB densities only differ by the length of tape
in the cartridge (see below). I hope this doesn't sound like a
commercial, but I haven't seen all this info in one place before.
I also looked at some of the documentation that came with our Sparc2
tape drive yesterday. It said that their 150MB drive could only write
in QIC-150 mode (using 18 tracks), but could read either QIC-150 or
Sun's older 9-track format (I'm not sure what QIC-format this was.)
Hope this helps,
Andy Scott
--- From Archive Datasheet for 2150S ----
Size: 5-1/4 Half-Height.
Capacity: 150MB/250MB
Transfer Rate, burst: 6.75MB/min
Cartridge Info:
Maynard Maynard
Part # Model # 3M Part # Media Specifications Capacity
_______ ________ _________ ______________________________ _________
90507 6250 DC6250 Read/Write QIC-150 and QIC-120 250MB
Read QIC-24
90504 6150 DC6150 Read/Write QIC-150 and QIC-120 150MB
Read-only QIC-11 and QIC-24
DC600A Read/Write QIC-120 125MB
Read-only QIC-11 and QIC-24
DC300XLP Read QIC-11 and QIC-24 45MB
Maynard
36 Skyline Drive
Lake Mary, FL 32746
Sales Support: (800) 821-8782
Phone: (407) 263-3500
FAX: (407) 263-3585
--
-------------------------------------------------------------
Andrew M. Scott Intel Corporation, M/S FM2-26
ascott@fws214.intel.com 1900 Prairie City Road
(916) 351-6369 Folsom, CA 95630, USAdtb@adpplz.UUCP (Tom Beach) (03/27/91)
In article <21411@shlump.nac.dec.com>, norcott@databs.enet.dec.com (Bill Norcott) writes: > If you want to exchange tapes with Sun or other workstations, get the Archive > 2150S this is a 150 MB unit (I believe it can also write 250MB with extended > length tapes, can anyone confirm this?). In any case, the 150MB is pretty YES! That's correct. There was speculation that the longer tapes might generate new and different head wear patterns ang generate data recovery errors but that's pretty much considered a non-issue any more. > much the data interchange "standard" for SCSI, and the 2150S also handles the > lower capacity formats. I believe the Archive 2150S is the actual drive used > in Suns. 2150 will READ the lower capacity formats. It WON'T WRITE the lower capacity tapes. That's pretty standard for mass storage media. Higher capacity formats will normally read lower capacity formats but media written on high capacity drives is rarely readable on lower capacity drives even when the format is fully supported as in 5 1/4" diskettes. Tom ------------------------------------------------------------------------ | 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 | ------------------------------------------------------------------------
sukes@eng.umd.edu (Tasuki Hirata) (03/27/91)
In article <21411@shlump.nac.dec.com> norcott@databs.enet.dec.com (Bill Norcott) writes: >In article <1991Mar23.001346.18373@ccu.umanitoba.ca>, umsmigie@ccu.umanitoba.ca (Jason Smigiel) writes... >> >If you want to exchange tapes with Sun or other workstations, get the Archive >2150S this is a 150 MB unit (I believe it can also write 250MB with extended >length tapes, can anyone confirm this?). yes it can. >In any case, the 150MB is pretty >much the data interchange "standard" for SCSI, and the 2150S also handles the >lower capacity formats. it can only read the lower densities and not write them reliably. it will read/write qic-120 and qic-150 but only read qic-24. (this is what i remember reading from the spec sheet....) >I believe the Archive 2150S is the actual drive used >in Suns. archive viper 2150s with custom firmware. > >Bill Norcott -- | Tasuki Hirata (sukes@eng.umd.edu) | Intel 80486: | | UUCP: uunet!eng.umd.edu!sukes | Power Tool for the Power Fool |
norsk@sequent.UUCP (Doug Thompson) (03/29/91)
In article <ASCOTT.91Mar26120329@fws214.intel.com> ascott@fws214.intel.com writes: >I also looked at some of the documentation that came with our Sparc2 >tape drive yesterday. It said that their 150MB drive could only write >in QIC-150 mode (using 18 tracks), but could read either QIC-150 or >Sun's older 9-track format (I'm not sure what QIC-format this was.) > >Hope this helps, >Andy Scott > >Cartridge Info: > >Maynard Maynard >Part # Model # 3M Part # Media Specifications Capacity >_______ ________ _________ ______________________________ _________ >90507 6250 DC6250 Read/Write QIC-150 and QIC-120 250MB > Read QIC-24 > >90504 6150 DC6150 Read/Write QIC-150 and QIC-120 150MB > Read-only QIC-11 and QIC-24 > > DC600A Read/Write QIC-120 125MB > Read-only QIC-11 and QIC-24 > > DC300XLP Read QIC-11 and QIC-24 45MB All the cartridges are downward compatible in terms of writing. IE, take a DC6150 cartridge and it can R/W in QIC120 and QIC24 in the repective tape drives. I don't know the numbers with QIC-11 density ------------------------------------------ | Cartridge ------------------------------------------ |Type | Length | Density | Capacity | | Feet | | (MB) ------------------------------------------ DC300XLP 450 QIC-24 45 ------------------------------------------ DC615A 150 QIC-24 15 QIC-120 30 QIC-150 NA QIC-525 NA ---------------------------------------- DC600A 600 QIC-24 60 QIC-120 120 QIC-150 NA QIC-525 NA ---------------------------------------- DC6037 150 QIC-24 15 QIC-120 30 QIC-150 37 QIC-525 NA ---------------------------------------- DC6150 600 QIC-24 60 QIC-120 120 QIC-150 150 QIC-525 NA ---------------------------------------- DC6250 1000 QIC-24 100 QIC-120 200 QIC-150 250 QIC-525 NA ---------------------------------------- DC6080 150 QIC-24 15 QIC-120 30 QIC-150 37 QIC-525 80 ---------------------------------------- DC6320 600 QIC-24 60 QIC-120 120 QIC-150 150 QIC-525 320 ---------------------------------------- DC6525 1000 QIC-24 100 QIC-120 200 QIC-150 250 QIC-525 525 I know is some sort of DC6xxxx cartridge for QIC-1000 that runs about 1000 feet and hold over 1GB, but thats all I know -- Douglas Thompson UUCP: ..{tektronix,ogicse,uunet}!sequent!norsk Internet: norsk@sequent.com "The scientist builds to learn; the engineer learns in order to build." Fred Brooks