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The Question is: Hello, Here are some more hints to your answer of 1285 "DLT III re-initialize in a TZ85..." I don't know how to contact you on different way. Hope you don't bother. Kind Regards Andreas -------------------------------------------------------------------------- DLT III re-initialize for different DLT types The Answer is :
DLT Matrix
DLT COMPACT Media IV TK90 40/80GB => TK90 / TK89 / TK88 / TK87 / TK86
.ditto. TK89 35/70GB => TK89 / TK88 / TK87 / TK86 / TK85
.ditto. TK88 20/40GB => TK88 / TK87 / TK86 / TK85
DLT COMPACT Media III TK87 10/20GB => TK87 / TK86 / TK85 / TK70 read only /
TK50 read only
.ditto. TK86 6GB => TK86 / TK85 / TK70 read only / TK50
read only
.ditto. TK85 2.6GB => TK85 / TK70 read only / TK50 read only
DLT COMPACT Media II TK70 296MB => TK70 / TK50 read only
DLT COMPACT Media I TK50 95MB => TK50
Media:
http://www.compaq.com/products/storageworks/mediafamily/DLT.html
Via OpenVMS...
The mentioned 'problem' appears at all 'older' DLT's.
For instance a TZ89 can't read a TZ90 initialized media by default, or TZ88
can't read TZ89 media and so forth...
But...
Since OpenVMS 7.2 following qualifiers are supported during tape initialize
that provides a different density.
Please read the extract from OpenVMS help below.
That means it can be re-initialize a DLT media via following command.
Assuming we have a DLT media initialised on a TZ89 and should be accessible on
a TZ88 and the tape device name is MKA600:
TAMDHU_SYSDAVO> sho dev mk
Device Device Error Volume Free Trans Mnt
Name Status Count Label Blocks Count Cnt
TAMDHU$MKA600: Online 0
TAMDHU_SYSDAVO> sho dev/full mka600:
Magtape TAMDHU$MKA600:, device type TZ89, is online, record-oriented device,
file-oriented device, error logging is enabled, controller supports
compaction (compaction enabled), device supports fastskip.
Error count 0 Operations completed 4109263
Owner process "" Owner UIC [SYSTEM]
Owner process ID 00000000 Dev Prot S:RWPL,O:RWPL,G:R,W
Reference count 0 Default buffer size 512
Density TK89 Format Normal-11
Volume status: no-unload on dismount, beginning-of-tape, odd parity.
TAMDHU_SYSDAVO> mount/for mka600:
%MOUNT-I-MOUNTED, TH0418 mounted on _TAMDHU$MKA600:
TAMDHU_SYSDAVO> dismount/nounload mka600:
TAMDHU_SYSDAVO> INITIALIZE /DENSITY=TK88 /MEDIA=COMPACTION MKA600: TEST
TAMDHU::SYSDAVO 13:37:57 INIT CPU=00:00:01.00 PF=1720 IO=4074 MEM=122
TAMDHU_SYSDAVO>
TAMDHU::SYSDAVO 13:40:37 (DCL) CPU=00:00:01.01 PF=1725 IO=4086 MEM=67
TAMDHU_SYSDAVO> mount/for mka600:
%MOUNT-I-MOUNTED, TEST mounted on _TAMDHU$MKA600:
TAMDHU_SYSDAVO> sho dev/full mka600:
Magtape TAMDHU$MKA600:, device type TZ89, is online, allocated, deallocate on
dismount, mounted foreign, record-oriented device, file-oriented device,
error logging is enabled, controller supports compaction (compaction
disabled), device supports fastskip.
Error count 0 Operations completed 4109314
Owner process "SYSDAVO" Owner UIC [SYSMGT,SYSDAVO]
Owner process ID 00002500 Dev Prot S:RWPL,O:RWPL,G:R,W
Reference count 2 Default buffer size 512
Volume label "TEST " Relative volume no. 0
Record size 0 Transaction count 1
Mount status Process Mount count 1
ACP process name ""
Density default Format Normal-11
Volume status: beginning-of-tape, odd parity.
TAMDHU_SYSDAVO> dismount/nounload mka600:
TAMDHU_SYSDAVO>
--------------------------------------------------------------
INITIALIZE
/DENSITY
/DENSITY=density-value
The /DENSITY qualifier is not applicable to any TF tape device.
Valid density values are as follows:
Keyword Meaning
DEFAULT Default density
800 NRZI 800 bits per inch (BPI)
1600 PE 1600 BPI
6250 GRC 6250 BPI
3480 IBM 3480 HPC 39872 BPI
3490E IBM 3480 compressed
833 DLT TK50: 833 BPI
TK50 DLT TK50: 833 BPI
TK70 DLT TK70: 1250 BPI
6250 RV80 6250 BPI EQUIVALENT
NOTE: Only the keywords above are understood by
TMSCP/TUDRIVER code prior to OpenVMS Version 7.2.
TK85 DLT Tx85: 10625 BPI - Cmpt III
TK86 DLT Tx86: 10626 BPI - Cmpt III
TK87 DLT Tx87: 62500 BPI - Cmpt III
TK88 DLT Tx88: (Quantum 4000) - Cmpt IV
TK89 DLT Tx89: (Quantum 7000) - Cmpt IV
QIC All QIC drives are drive-settable only
8200 Exa-Byte 8200
8500 Exa-Byte 8500
DDS1 Digital Data Storage 1 - 2G
DDS2 Digital Data Storage 2 - 4G
DDS3 Digital Data Storage 3 - 8-10G
DDS4 Digital Data Storage 4
AIT1 Sony Advanced Intelligent Tapes
To format a diskette on RXnn diskette drives, use the
INITIALIZE/DENSITY command. Specify the density at which the
diskette is to be formatted as follows:
Keyword Meaning
single RX01 - 8 inch
double RX02 - 8 inch
dd double density: 720K - 3 1/2 inch
hd high density: 1.44MB - 3 1/2 inch
ed extended density: 2.88MB - 3 1/2 inch
If you do not specify a density value for a diskette being
initialized on a drive, the system leaves the volume at the
density to which the volume was last formatted.
NOTE
Diskettes formatted in double density cannot be read or
written by the console block storage device (an RX01 drive)
of a VAX-11/780 until they have been reformatted in single
density.
RX33 diskettes cannot be read from or written to by RX50
disk drives. RX50 diskettes can be read from and written to
by RX33 disk drives; they cannot be formatted by RX33 disk
drives.
For magnetic tape volumes, specifies the density in bits per inch
(bpi) at which the magnetic tape is to be written.
For magnetic tape volumes, the density value specified can be 800
bpi, 1600 bpi, or 6250 bpi, as long as the density is supported
by the magnetic tape drive. If you do not specify a density value
for a blank magnetic tape, the system uses a default density of
the highest value allowed by the tape drive. If the drive allows
6250-, 1600-, and 800-bpi operation, the default density is 6250
bpi. If you do not specify a density value for a magnetic tape
that has been previously written, the system uses the density of
the first record on the volume. If the record is unusually short,
the density value will not default.
INITIALIZE Subtopic?
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