tz(7) — Special Files
NAME
tz − SCSI magnetic tape interface
SYNOPSIS
AlphaServer 8200 and AlphaServer 8400 Qlogic ISP1020: bus tlsb0 at nexus?
bus tiop0 at tlsb0 vector tioperror
bus isp0 at ∗ vector ispintr
controller scsi0 at ∗ vector scsiintr
controller scsi1 at ∗ vector scsiintr
AlphaServer 8200 and AlphaServer 8400 DEC KZMSA: bus tlsb0 at nexus?
bus tiop0 at tlsb0 vector tioperror
bus xmi0 at tiop? vector xmierror
bus xza0 at xmi?
controller scsi0 at ∗ vector scsiintr
controller scsi1 at ∗ vector scsiintr
DEC 7000/10000 DEC KZMSA: bus lsb0 at nexus?
bus iop0 at lsb0 vector ioperror
bus xmi0 at iop0 vector xmierror
bus xza0 at xmi?
controller scsi0 at ∗ vector scsiintr
controller scsi1 at ∗ vector scsiintr
DEC 4000 DEC SIOP: bus ibus0 at nexus?
bus lbus0 at ibus0
bus siop0 at lbus0 slot 0 vector siopcointr
controller scsi0 at ∗ vector scsiintr
DEC 3000 NCR ASC: bus tc0 at nexus?
bus tcds0 at ∗ vector tcdsintr
controller scsi0 at ∗ vector scsiintr
controller scsi1 at ∗ vector scsiintr
DEC 3000 DEC KZTSA: bus tc0 at nexus?
bus tza0 at ∗ vector kztsaintr
controller scsi0 at ∗ vector scsiintr DEC PCI bus DEC KZPSA: bus pci0 at ∗
bus pza0 at pci? vector pzaintr
controller scsi0 at ∗ vector scsiintr
DEC PCI bus NCR 810: bus pci0 at ∗
bus psiop at pci? vector psiopintr
controller scsi0 at ∗ vector scsiintr
DEC PCI bus Qlogic ISP1020: bus pci0 at ∗
bus isp0 at ∗ vector ispintr
controller scsi0 at ∗ vector scsiintr
DEC EISA bus Adaptec 1740: bus eisa0 at ∗ bus aha0 at ∗ vector ahaintr
controller scsi0 at ∗ vector scsiintr
DESCRIPTION
The Small Computer System Interface (SCSI) tape driver provides a standard tape drive interface as described in mtio(7). This is the tape driver for any Compaq SCSI tape device. Facilities are provided to allow the addition of third-party SCSI tape drives to the system. Refer to the ddr_config(8) and ddr.dbase(4) reference pages for instructions.
For reads from Beginning of Media (BOM), the density of the tape is obtained from the drive. Autodensity selection is then used for all read operations. This means that reads are performed in the density of the tape.
For writes from BOM, the density, compression, and fixed/variable blocking factor of the tape are set. The tape is written in the density, compression, and fixed/variable blocking factor selected by the device special file name such as tape?_d0 device special files in dev/tape. See System Administration for more information on device special files. If the tape is not at BOM, and is partly written, the written portion of the tape determines the density, compression, and fixed/variable blocking factors for the write.
Tape Media and Drive Compatibility Tables
The following table lists the tape compatibility for CompacTape media and the TZ85, TZ86, TZ87, TZ88, TZ89, DLT4000, and DLT8000 tape drives:
| Media Type | Drive Type | |||
| CompacTapeI | TZ30, TK50 | |||
| CompacTapeII | TZ30, TK50, TK70, TZ85, TZ86 | |||
| CompacTapeIII | TZ85, TZ86, TZ87, TZ88, TZ89, DLT4000, DLT8000 | |||
| CompacTapeIIIXT | TZ88, TZ89, DLT4000, DLT8000 | |||
| CompacTapeIV | TZ88, TZ89, DLT4000, DLT8000 |
CompacTapeIII is also known as DLTtapeIII.
CompacTapeIIIXT is also known as DLTtapeIIIxT.
CompacTapeIV is also known as DLTtapeIV.
The following table lists the tape compatibility for the TLZ04, TLZ06, TLZ07, TLZ09, TLZ10, SDT-7000, SDT-9000, and SDT-10000 tape drives:
| Media Type | Drive Type | |||
| DDS-1 (60m) | TLZ04, TLZ06, TLZ07, TLZ09, TLZ10, | |||
| SDT-7000, SDT-9000, SDT-10000 | ||||
| DDS-1 (90m) | TLZ06, TLZ07, TLZ09, TLZ10, | |||
| SDT-7000, SDT-9000, SDT-10000 | ||||
| DDS-2 (120m) | TLZ07, TLZ09, TLZ10, | |||
| SDT-7000, SDT-9000, SDT-10000 | ||||
| DDS-3 (125m) | TLZ10, SDT-9000, SDT-10000 | |||
| DDS-4 (150m) | SDT-10000 |
The following table lists the tape compatibility for the TZS20, SDX-300C, and SDX-500C tape drives:
| Media Type | Drive Type Supported | |||
| AIT 25 | TZS20, SDX-300C, SDX-500C | |||
| AIT 35 | SDX-300C, SDX-500C | |||
| AIT 50 | SDX-500C |
Device Special Files and Tape Density
Using a particular device special file with a certain tape format will indicate what density code, compression, capacity and I/O is supported. It is also possible for administrators to customize which device special file names apply to what densities. Future extensions to device special files may also increase the number of alternative files that can be used with a particular device. The current range of possible device special files is: tape?_d0 to tape?_d7, where ? is a decimal number representing the identification number of the tape device. Normally, the _d1 suffix will always indicate the highest density used with compression, while the _d2 suffix will indicate the highest density witout compression.
Note that the tape?_?? format device names correspond to the previous device names as shown in the following table:
| Previous Format in /dev | New Formats in /dev/nrmt and /dev/rmt | ||
| rmt?a | tape?_d3 | ||
| rmt?l | tape?_d0 (d0 always maps to the low density) | ||
| rmt?m | tape?_d2 | ||
| rmt?h | tape?_d1 (d1 always maps to the high density) |
Two new device special file names now exist which will allow the user to select the highest density of the tape drive. These two device special filenames can be used for all devices which support auto-density select, even if there are no entries in the ddr.dbase file for the tape drive.
tape?By selecting this device special filename without any d0-d7 reference you will be selecting a density code of 00H, which will instruct the tape device to use the default density available for the tape type in the drive. Compression will be disabled for all I/O operations.
tape?cBy selecting this device special filename without any d0-d7 reference you will be selecting a density code of 00H, which will instruct the tape device to use the default density available for the tape type in the drive. Compression will be enabled for all I/O operations. It is important that you ensure the device supports compression before you use this device special filename.
If you have a requirement to support previous device names (such as local shell scripts or utilities), consult the System Administration guide for information on creating and using the rmt?? format for device special files.
As it is possible to customize the device names, to determine how the tape device special file names correspond to the supported formats for a particular device, you can consult the /etc/ddr.dbase file and search for the device name. (See the reference page ddr.dbase(4) for information on this file) For example, the following entry appears for the TZS20 tape device:
SCSIDEVICE
#
# Matches TZS20, TZS2
#
Type = tape
Name = "DEC" "TZS2"
#
PARAMETERS:
TypeSubClass = 8mm, loader
TagQueueDepth = 0
MaxTransferSize = 0x0ffffff # (16MB - 1)
ReadyTimeSeconds = 90 # seconds
DENSITY:
#
DensityNumber = 0,3,4,5,6,7
DensityCode = default
CompressionCode = 0x0
Buffered = 0x1
DENSITY:
#
DensityNumber = 1,2
DensityCode = default
CompressionCode = 0x1
Buffered = 0x1
From the DENSITY section of the entry you can determine which device special files apply:
DensityNumber = 0,3,4,5,6,7
tape?_d0, or any device name with the suffix: _d3, _d4, _d5, _d6, and _d7. In this case, compression is set to Off (0x0).
DensityNumber = 1,2
tape?_d1, or tape?_d2. In this case, compression is set to On (0x1)
Tape Format Reference
The following tables provide information for various tape drives. All of these tape drives support variable block size. Note that in the capacity column, a number followed by an asterisk (∗) assumes a 2:1 compression ratio. The actual compression ratio may vary depending on the type of data being compressed. Note the following abbreviations that apply to these tables:
CT ?CompacTape, such as CompacTapeIII
rwRead and write I/O is supported
roRead only I/O is supported
TZ85 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TK50 | tape?_d0-7 | 00h | N/A | 95M | CT II | ro |
| TZ30 | tape?_d0-7 | 00h | N/A | 95M | CT II | ro |
| TZ85 | tape?_d0-7 | 17h | N/A | 2.6 | CT III | rw |
TZ86 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TK50 | tape?_d0-7 | 00h | N/A | 95M | CT II | ro |
| TZ30 | tape?_d0-7 | 00h | N/A | 95M | CT II | ro |
| TZ85 | tape?_d0,3 | 17h | N/A | 2.6 | CT III | rw |
| TZ86 | tape?_d1,2,4-7 | 18h | N/A | 6.0 | CT III | rw |
TZ87 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TZ85 | tape?_d3 | 17h | N/A | 2.6 | CT III | rw |
| TZ86 | tape?_d0 | 18h | N/A | 6.0 | CT III | rw |
| TZ87 | tape?_d2, 4-7 | 00h | off | 10.0 | CT III | rw |
| TZ87 | tape?_d1 | 00h | on | 20.0 ∗ | CT III | rw |
TZ88 / DLT4000 Tape Drive Supported Formats
The DLT4000 is functionally equivalent to the TZ88 tape drive and the DLT4000 tape format is identical to the TZ88 tape format.
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TZ85 | tape?_d3 | 17h | N/A | 2.6 | CT III | rw |
| TZ86 | tape?_d0 | 18h | N/A | 6.0 | CT III | rw |
| TZ87 | tape?_d2, 6-7 | 00h | off | 10.0 | CT III | rw |
| TZ87 | tape?_d1 | 00h | on | 20.0 ∗ | CT III | rw |
| TZ87 | tape?_d4 | 19h | off | 15.0 | CT III | rw |
| TZ87 | tape?_d5 | 19h | on | 30.0 ∗ | CT III | rw |
| TZ88 | tape?_d4, 5 | N/A | N/A | 15/30 | CT III XT | ro |
| TZ88 | tape?_d2, 6-7 | 00h | off | 15.0 | CT III XT | rw |
| TZ88 | tape?_d1 | 00h | on | 30.0 ∗ | CT III XT | rw |
| DLT4000 | tape?_d4, 5 | N/A | N/A | 15/30 | CT III XT | ro |
| DLT4000 | tape?_d2, 6-7 | 00h | off | 15.0 | CT III XT | rw |
| DLT4000 | tape?_d1 | 00h | on | 30.0 ∗ | CT III XT | rw |
| TZ88 | tape?_d4, 5 | N/A | N/A | 20/40 | CT IV | ro |
| TZ88 | tape?_d2, 6-7 | 00h | off | 20.0 | CT IV | rw |
| TZ88 | tape?_d1 | 00h | on | 40.0 ∗ | CT IV | rw |
| DLT4000 | tape?_d4, 5 | N/A | N/A | 20/40 | CT IV | ro |
| DLT4000 | tape?_d2, 6-7 | 00h | off | 20.0 | CT IV | rw |
| DLT4000 | tape?_d1 | 00h | on | 40.0 ∗ | CT IV | rw |
TZ89 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TZ85 | tape?_d0,3 | N/A | N/A | 2.6 | CT III | ro |
| TZ85 | tape?_d4 | 17h | N/A | 2.6 | CT III | rw |
| TZ86 | tape?_d0,3 | N/A | N/A | 6.0 | CT III | ro |
| TZ86 | tape?_d5 | 18h | N/A | 6.0 | CT III | rw |
| TZ87 | tape?_d0,3 | N/A | N/A | 10/20 | CT III | ro |
| TZ87 | tape?_d2,6-7 | 00h | off | 10.0 | CT III | rw |
| TZ87 | tape?_d1 | 00h | on | 20.0 ∗ | CT III | rw |
| TZ88 | tape?_d0,3-5 | N/A | N/A | 15/30 | CT IIIXT | ro |
| DLT4000 | tape?_d0,3-5 | N/A | N/A | 15/30 | CT IIIXT | ro |
| TZ88 | tape?_d2,6-7 | 00h | off | 15.0 | CT IIIXT | rw |
| TZ88 | tape?_d1 | 00h | on | 30.0 ∗ | CT IIIXT | rw |
| DLT4000 | tape?_d2,6-7 | 00h | off | 15.0 | CT IIIXT | rw |
| DLT4000 | tape?_d1 | 00h | on | 30.0 ∗ | CT IIIXT | rw |
| TZ88 | tape?_d3 | 1ah | off | 20.0 | CT IV | rw |
| TZ88 | tape?_d0 | 1ah | on | 40.0 ∗ | CT IV | rw |
| DLT4000 | tape?_d3 | 1ah | off | 20.0 | CT IV | rw |
| DLT4000 | tape?_d0 | 1ah | on | 40.0 ∗ | CT IV | rw |
| TZ89 | tape?_d4,5 | N/A | N/A | 20-70 | CT IV | ro |
| TZ89 | tape?_d2,6-7 | 00h | off | 35.0 | CT IV | rw |
| TZ89 | tape?_d1 | 00h | on | 70.0 ∗ | CT IV | rw |
DLT8000 Tape Drive Supported Formats
The DLT2000 format is also known as the TZ87 format. The DLT4000 format is also known as the TZ88 format. The DLT7000 format is also known as the TZ89 format.
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TZ87 | tape?_d0, 3-5 | N/A | N/A | 10/20 | CT III | ro |
| TZ87 | tape?_d2,6-7 | 00h | off | 10.0 | CT III | rw |
| TZ87 | tape?_d1 | 00h | on | 20.0 ∗ | CT III | rw |
| TZ88 | tape?_d0,3-5 | N/A | N/A | 15/30 | CT IIIXT | ro |
| DLT4000 | tape?_d0,3-5 | N/A | N/A | 15/30 | CT IIIXT | ro |
| TZ88 | tape?_d2,6-7 | 00h | off | 15.0 | CT IIIXT | rw |
| TZ88 | tape?_d1 | 00h | on | 30.0 ∗ | CT IIIXT | rw |
| DLT4000 | tape?_d2,6-7 | 00h | off | 15.0 | CT IIIXT | rw |
| DLT4000 | tape?_d1 | 00h | on | 30.0 ∗ | CT IIIXT | rw |
| TZ88 | tape?_d4 | 1ah | off | 20.0 | CT IV | rw |
| TZ88 | tape?_d5 | 1ah | on | 40.0 ∗ | CT IV | rw |
| DLT4000 | tape?_d4 | 1ah | off | 20.0 | CT IV | rw |
| DLT4000 | tape?_d5 | 1ah | on | 40.0 ∗ | CT IV | rw |
| TZ89 | tape?_d3 | 1bh | off | 35.0 | CT IV | rw |
| TZ89 | tape?_d0 | 1bh | on | 70.0 ∗ | CT IV | rw |
| DLT8000 | tape?_d2,6-7 | 00h | off | 40.0 | CT IV | rw |
| DLT8000 | tape?_d1 | 00h | on | 80.0 ∗ | CT IV | rw |
TZ30 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (MB) | ||||
| TZ30 | tape?d0-d7 | 00h | N/A | 95 | CT 1 | rw |
TKZ08 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | GB | ||||
| TKZ08 ∗ | tape?d0-d7 | 14h | N/A | 2.2 | 8 mm | rw |
| ∗ Also known as Exabyte 8200. | ||||||
TKZ09 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | GB | ||||
| TKZ08 | tape?_d0,d3 | 14h | N/A | ? | 8mm | rw |
| TKZ09 ∗ | tape?_d1,d2, d4-7 | 15h | N/A | ? | 8mm | rw |
| ∗ Also known as Exabyte 8500. Supports Exabyte 8200 and 8500 formats | ||||||
TSZ07 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | BPI | ||||
| TSZ07 | tape?d0, d2 | 02h | N/A | 1600 | 9-Trk | rw |
| TSZ07 | tape?d1, d3-7 | 03h | N/A | 6250 | 9-Trk | rw |
TZK20 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TZK20 | tape?d0-d7 | 00h | N/A | 2.3 | QICW | rw |
TLZ04 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TLZ04 | tape?_d0-7 | 13h | N/A | 1.3 GB | DDS-1 (60m) | rw |
TLZ06 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TLZ04 | tape?_d0, 3-7 | 13h | N/A | 1.3 GB | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0, 3-7 | 13h | off | 1.3 GB | DDS-1 (60m) | rw |
| TLZ06 | tape?_d1-2 | 13h | on | 2.6 GB ∗ | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0, 3-7 | 13h | off | 2.0 GB | DDS-1 (90m) | rw |
| TLZ06 | tape?_d1-2 | 13h | on | 4.0 GB ∗ | DDS-1 (90m) | rw |
TLZ07 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TLZ04 | tape?_d0, 3-7 | 00h | N/A | 1.3 GB | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0, 3-7 | 00h | off | 1.3 GB | DDS-1 (60m) | rw |
| TLZ06 | tape?_d1-2 | 00h | on | 2.6 GB ∗ | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0, 3-7 | 00h | off | 2.0 GB | DDS-1 (90m) | rw |
| TLZ06 | tape?_d1-2 | 00h | on | 4.0 GB ∗ | DDS-1 (90m) | rw |
| TLZ07 | tape?_d0, 3-7 | 00h | off | 4.0 GB | DDS-2 (120m) | rw |
| TLZ07 | tape?_d1-2 | 00h | on | 8.0 GB ∗ | DDS-2 (120m) | rw |
TLZ09 / SDT-7000 Tape Drive Supported Formats
The SDT-7000 is functionally equivalent to the TLZ09 tape drive and the SDT-7000 tape format is identical to the TLZ09 tape format.
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TLZ04 | tape?_d0, 3-7 | 00h | N/A | 1.3 | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0, 3-7 | 00h | off | 1.3 | DDS-1 (60m) | rw |
| TLZ06 | tape?_d1-2 | 00h | on | 2.6 ∗ | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0, 3-7 | 00h | off | 2.0 | DDS-1 (90m) | rw |
| TLZ06 | tape?_d1-2 | 00h | on | 4.0 ∗ | DDS-1 (90m) | rw |
| TLZ07 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120m) | rw |
| TLZ07 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2(120m) | rw |
| TLZ09 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120) | rw |
| TLZ09 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2 (120) | rw |
| SDT-7000 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120m) | rw |
| SDT-7000 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2 (120m) | rw |
TLZ10 / SDT-9000 Tape Drive Supported Formats
The SDT-9000 is functionally equivalent to the TLZ10 tape drive and the SDT-9000 tape format is identical to the TLZ10 tape format.
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TLZ04 | tape?_d0,3-7 | 00h | N/A | 1.3 | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0,3-7 | 00h | off | 1.3 | DDS-1 (60m) | rw |
| TLZ06 | tape?_d1-2 | 00h | on | 2.6 ∗ | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0,3-7 | 00h | off | 2.0 | DDS-1 (90m) | rw |
| TLZ06 | tape?_d1-2 | 00h | on | 4.0 ∗ | DDS-1 (90m) | rw |
| TLZ07 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120m) | rw |
| TLZ07 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2 (120m) | rw |
| TLZ09 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120m) | rw |
| TLZ09 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2 (120m) | rw |
| SDT-7000 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120m) | rw |
| SDT-7000 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2 (120m) | rw |
| TLZ10 | tape?_d0,3-7 | 00h | off | 12.0 | DDS-3 (125m) | rw |
| TLZ10 | tape?_d1-2 | 00h | on | 24.0 ∗ | DDS-3 (125m) | rw |
| SDT-9000 | tape?_d0,3-7 | 00h | off | 12.0 | DDS-3 (125m) | rw |
| SDT-9000 | tape?_d1-2 | 00h | on | 24.0 ∗ | DDS-3 (125m) | rw |
SDT-10000 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TLZ04 | tape?_d0,3-7 | 00h | N/A | 1.3 | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0,3-7 | 00h | off | 1.3 | DDS-1 (60m) | rw |
| TLZ06 | tape?_d1-2 | 00h | on | 2.6 ∗ | DDS-1 (60m) | rw |
| TLZ06 | tape?_d0,3-7 | 00h | off | 2.0 | DDS-1 (90m) | rw |
| TLZ06 | tape?_d1-2 | 00h | on | 4.0 ∗ | DDS-1 (90m) | rw |
| TLZ07 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120m) | rw |
| TLZ07 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2 (120m) | rw |
| TLZ09 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120m) | rw |
| TLZ09 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2 (120m) | rw |
| SDT-7000 | tape?_d0,3-7 | 00h | off | 4.0 | DDS-2 (120m) | rw |
| SDT-7000 | tape?_d1-2 | 00h | on | 8.0 ∗ | DDS-2 (120m) | rw |
| TLZ10 | tape?_d0,3-7 | 00h | off | 12.0 | DDS-3 (125m) | rw |
| TLZ10 | tape?_d1-2 | 00h | on | 24.0 ∗ | DDS-3 (125m) | rw |
| SDT-9000 | tape?_d0,3-7 | 00h | off | 12.0 | DDS-3 (125m) | rw |
| SDT-9000 | tape?_d1-2 | 00h | on | 24.0 ∗ | DDS-3 (125m) | rw |
| SDT-10000 | tape?_d0,3-7 | 00h | off | 20.0 | DDS-4 (150m) | rw |
| SDT-10000 | tape?_d1-2 | 00h | on | 40.0 ∗ | DDS-4 (150m) | rw |
TZS20 Tape Drive Supported Formats
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TZS20 | tape?_d0, 3-7 | 00h | off | 25.0 GB | AIT | rw |
| TZS20 | tape?_d1-2 | 00h | on | 50.0 GB ∗ | AIT | rw |
SDX-300C Tape Drive Supported Formats
The SDX-300C format is also known as the TZS20 format.
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TZS20 | tape?_d0, 3-7 | 00h | off | 25.0 | AIT 25 | rw |
| TZS20 | tape?_d1-2 | 00h | on | 50.0 ∗ | AIT 25 | rw |
| SDX-300C | tape?_d0, 3-7 | 00h | off | 25.0 | AIT 25 | rw |
| SDX-300C | tape?_d1-2 | 00h | on | 50.0 ∗ | AIT 25 | rw |
| SDX-300C | tape?_d0, 3-7 | 00h | off | 35.0 | AIT 35 | rw |
| SDX-300C | tape?_d1-2 | 00h | on | 70.0 ∗ | AIT 35 | rw |
SDX-500C Tape Drive Supported Formats
The SDX-300C format is also known as the TZS20 format.
| Format | Device Special | Density | Compression | Capacity | Cartridge | I/O |
| File Name | Code | (GB) | ||||
| TZS20 | tape?_d0, 3-7 | 00h | off | 25.0 | AIT 25 | rw |
| TZS20 | tape?_d1-2 | 00h | on | 50.0 ∗ | AIT 25 | rw |
| SDX-300C | tape?_d0, 3-7 | 00h | off | 25.0 | AIT 25 | rw |
| SDX-300C | tape?_d1-2 | 00h | on | 50.0 ∗ | AIT 25 | rw |
| SDX-300C | tape?_d0, 3-7 | 00h | off | 35.0 | AIT 35 | rw |
| SDX-300C | tape?_d1-2 | 00h | on | 70.0 ∗ | AIT 35 | rw |
| SDX-500C | tape?_d0, 3-7 | 00h | off | 50.0 | AIT 50 | rw |
| SDX-500C | tape?_d1-2 | 00h | on | 100.0 ∗ | AIT 50 | rw |
The following formats are supported for the TZK10 QIC-format tape drive: QIC-24 (re) 512-byte block size; QIC-120 and QIC-150 (rw) 512-byte block size; and QIC-320 (rw) variable block size. With QIC-format tapes, except QIC-320 and QIC-525, all read and write operations must be in multiples of the block size because record boundaries are not preserved. Use the following device special file names to select QIC densities:
| Format | Device Special | Block Size | Capacity | Cartridge | I/O |
| File Name | |||||
| QIC-24 | tape?_d3 | fixed 512 | 60MB | DC600A | ro |
| QIC-120 | tape?_d0 | fixed 512 | 120MB | DC6150 | rw |
| QIC-120 | tape?_d0 | fixed 512 | 120MB | DC600XTD, | rw |
| QIC-150 | tape?_d2, 4 | fixed 512 | 150MB | DC6150 | rw |
| QIC-150 | tape?_d2, 4 | fixed 512 | 150MB | DC600XTD | rw |
| QIC-320 | tape?_d5,6 | fixed 1024 | 320MB | DC6320 | rw |
| QIC-525 | tape?_d5,6 | fixed 1024 | 525MB | DC6525 | rw |
| QIC-320 | tape?_d1,7 | variable | 320MB | DC6320 | rw |
| QIC-525 | tape?_d1,7 | variable | 525MB | DC6525 | rw |
The following formats are supported for the TZK11 QIC-format tape drive: QIC-24 (read only) 512-byte block size; QIC-120 and QIC-150 (rw) 512-byte block size; and QIC-320/525/1Gig/2Gig (rw) variable block size. With QIC-format 24/120/150 tapes, all read and write operations must be in multiples of the block size because record boundaries are not preserved. Use the following device special file names to select QIC densities:
| Format | Device Special | Block Size | Capacity | Cartridge | I/O |
| File Name | |||||
| QIC-24 | tape?_d3,4 | fixed 512 | 60MB | DC600A | ro |
| QIC-120 | tape?_d0 | fixed 512 | 120MB | DC6150 | rw |
| QIC-120 | tape?_d0 | fixed 512 | 120MB | DC600XTD | rw |
| QIC-150 | tape?_d2 | fixed 512 | 150MB | DC6150 | rw |
| QIC-150 | tape?_d2 | fixed 512 | 150MB | DC600XTD | rw |
| QIC-320 | tape?_d1 | variable | 320MB | DC6320 | rw |
| QIC-525 | tape?_d1 | variable | 525MB | DC6525 | rw |
| QIC-1G | tape?_d1 | variable | 1G | DC9000 | rw |
| QIC-2G | tape?_d1 | variable | 2G | DC9000 | rw |
| QIC-320 | tape?_d5,6 | fixed 1024 | 320MB | DC6320 | rw |
| QIC-525 | tape?_d5,6 | fixed 1024 | 525MB | DC6525 | rw |
The TZK11 tape drive uses autodensity select feature of the drive. The 2 Gig density can only be written on a 2 Gig cartridge. The 1 Gig density can only be written on a 1 Gig cartridge. The 320/525 cartridge can be used to write 120/150/320/525 densities. With all fixed-block tape devices, when you use the dd command to transfer a file to tape you must use padding to complete a block by specifying the conv=sync option. For example, the following two dd commands use the conv=sync option to transfer the /etc/motd file with a size of approximately 400 bytes to the QIC-format tape drives:
dd if=/etc/motd of=/dev/tape/tape0_d2 bs=10k conv=sync
dd if=/etc/motd of=dev/tape/tape0_d0 bs=512 conv=sync
The data field of 1 also tells the driver not to continue scanning LUNs for this target when this attribute is found.
Tape Support
Refer to the Software Product Description (SPD) for information on the specific tape devices that are supported. Refer to the Systems and Options Catalog (SOC) for information on which devices are supported on the various system platforms.
EXAMPLES
The following example shows the configuration specification that you might have for a DEC 3000 Model 500 system with a PMAZC controller in slot 0 and KZTSA devices in slots 1 and 2:
bus tc0 at nexus?
bus tcds0 at tc0 slot 6 vector tcdsintr # onboard scsi
bus tcds1 at tc0 slot 0 vector tcdsintr # PMAZC in tc slot 0
bus tza0 at tc0 slot 1 vector kztsaintr # KZTSA in tc slot 1
bus tza1 at tc0 slot 2 vector kztsaintr # KZTSA in tc slot 2
controller scsi0 at tcds0 slot 0 vector scsiintr # Internal port
controller scsi1 at tcds0 slot 1 vector scsiintr # External port
controller scsi2 at tcds1 slot 0 vector scsiintr # A port
controller scsi3 at tcds1 slot 1 vector scsiintr # B port
controller scsi4 at tza0 slot 0 vector scsiintr
controller scsi5 at tza1 slot 0 vector scsiintr
ERRORS
All diagnostic messages are sent to the error logger subsystem.
FILES
/dev/tape/tape?_d?, /dev/ntape/tape?_d?
RELATED INFORMATION
ddr.dbase(4), ddr_config(8), mtio(7), RAID(7), SCSI(7), MAKEDEV(8), uerf(8), tapex(8)