Kbase 11350: Why is there both a BTOS and CTOS Tape media type?
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
10/05/1998 |
|
Why is there both a BTOS and CTOS Tape media type?
Because CTOS and BTOS operating systems diverged in internal design
during the time that Burroughs/Unisys was selling its own version of
the OEM CTOS op sys under the BTOS label, the TAPE RESTORE commands
for these two op sys's and the CTOS vs. BTOS hardware, we have to sell
two different tape type media (06 vs. 08). The bits on the tapes are
identical, only the archive restore utility which is used to
manufacture the tapes is different. We MUST know the op sys of the
customer's machine in order to get the correct tape.
Use VERSION command to check the version of [sys]<sys>TapeRestore.Run.
Our BTOS II 3.2.0 op sys has a TapeRestore.Run of 12.0.0, static memory
size 101888. Under the CTOS VM 2.4 op sys, the [sys]<sys>TapeRestore.
version was 11.4, static memory size 111616. With other releases, the
size may be different still. Trying to install a tape that does not
match the version under which the tape was manufactured will result
in either system errors or a complete crash of the machine, so there's
no getting around having the matching tape for the customer's op sys.
Unisys purchased Convergent Technologies in 1989, and since that time,
the two operating systems have been migrated back into one.
Nevertheless, the corresponding hardware, that is, the tape drives
themselves, that is still in the field, will be around long enough
that we will need to continue to support the two varieties of tape
drives and their respective archive restore utility software.
With the CTOS III 3.4 release, there is a single tape utility in use.
The "BTOS" product name is no longer being sold (1993).
Progress Software Technical Support Note # 11350