| mt.1 (256281) | mt.1 (280438) |
|---|---|
| 1.\" Copyright (c) 1981, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright --- 13 unchanged lines hidden (view full) --- 22.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27.\" SUCH DAMAGE. 28.\" 29.\" @(#)mt.1 8.1 (Berkeley) 6/6/93 | 1.\" Copyright (c) 1981, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright --- 13 unchanged lines hidden (view full) --- 22.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27.\" SUCH DAMAGE. 28.\" 29.\" @(#)mt.1 8.1 (Berkeley) 6/6/93 |
| 30.\" $FreeBSD: stable/10/usr.bin/mt/mt.1 216370 2010-12-11 08:32:16Z joel $ | 30.\" $FreeBSD: stable/10/usr.bin/mt/mt.1 280438 2015-03-24 14:36:10Z ken $ |
| 31.\" | 31.\" |
| 32.Dd January 20, 2008 | 32.Dd March 3, 2014 |
| 33.Dt MT 1 34.Os 35.Sh NAME 36.Nm mt 37.Nd magnetic tape manipulating program 38.Sh SYNOPSIS 39.Nm 40.Op Fl f Ar tapename --- 25 unchanged lines hidden (view full) --- 66The following commands optionally take a 67.Ar count , 68which defaults to 1. 69.Bl -tag -width ".Cm erase" 70.It Cm weof 71Write 72.Ar count 73end-of-file (EOF) marks at the current position. | 33.Dt MT 1 34.Os 35.Sh NAME 36.Nm mt 37.Nd magnetic tape manipulating program 38.Sh SYNOPSIS 39.Nm 40.Op Fl f Ar tapename --- 25 unchanged lines hidden (view full) --- 66The following commands optionally take a 67.Ar count , 68which defaults to 1. 69.Bl -tag -width ".Cm erase" 70.It Cm weof 71Write 72.Ar count 73end-of-file (EOF) marks at the current position. |
| 74This returns when the file mark has been written to the media. 75.It Cm weofi 76Write 77.Ar count 78end-of-file (EOF) marks at the current position. 79This returns as soon as the command has been validated by the tape drive. |
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| 74.It Cm smk 75Write 76.Ar count 77setmarks at the current position (DDS drives only). 78.It Cm fsf 79Forward space 80.Ar count 81files. --- 42 unchanged lines hidden (view full) --- 124This typically is greater than the hardware position 125by the number of end-of-file marks. 126Some drives do not support this. 127.It Cm rewind 128Rewind the tape. 129.It Cm offline , rewoffl 130Rewind the tape and place the drive off line. 131Some drives are never off line. | 80.It Cm smk 81Write 82.Ar count 83setmarks at the current position (DDS drives only). 84.It Cm fsf 85Forward space 86.Ar count 87files. --- 42 unchanged lines hidden (view full) --- 130This typically is greater than the hardware position 131by the number of end-of-file marks. 132Some drives do not support this. 133.It Cm rewind 134Rewind the tape. 135.It Cm offline , rewoffl 136Rewind the tape and place the drive off line. 137Some drives are never off line. |
| 138.It Cm load 139Load the tape into the drive. |
|
| 132.It Cm retension 133Re-tension the tape. 134This winds the tape from the current position to the end 135and then to the beginning. 136This sometimes improves subsequent reading and writing, 137particularly for streaming drives. 138Some drives do not support this. | 140.It Cm retension 141Re-tension the tape. 142This winds the tape from the current position to the end 143and then to the beginning. 144This sometimes improves subsequent reading and writing, 145particularly for streaming drives. 146Some drives do not support this. |
| 139.It Cm status | 147.It Cm ostatus |
| 140Output status information about the drive. 141For SCSI magnetic tape devices, 142the current operating modes of density, blocksize, and whether compression 143is enabled is reported. 144The current state of the driver (what it thinks that 145it is doing with the device) is reported. 146If the driver knows the relative 147position from BOT (in terms of filemarks and records), it outputs that. 148Note 149that this information is not definitive (only BOT, End of Recorded Media, and 150hardware or SCSI logical block position (if the drive supports such) are 151considered definitive tape positions). | 148Output status information about the drive. 149For SCSI magnetic tape devices, 150the current operating modes of density, blocksize, and whether compression 151is enabled is reported. 152The current state of the driver (what it thinks that 153it is doing with the device) is reported. 154If the driver knows the relative 155position from BOT (in terms of filemarks and records), it outputs that. 156Note 157that this information is not definitive (only BOT, End of Recorded Media, and 158hardware or SCSI logical block position (if the drive supports such) are 159considered definitive tape positions). |
| 160.Pp 161Also note that this is the old status command, and will be eliminated in 162favor of the new status command (see below) in a future release. |
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| 152.It Cm errstat 153Output (and clear) error status information about this device. 154For every normal 155operation (e.g., a read or a write) and every control operation (e.g,, a 156rewind), the driver stores up the last command executed and it is associated 157status and any residual counts (if any). 158This command retrieves and outputs this 159information. 160If possible, this also clears any latched error information. 161.It Cm geteotmodel 162Output the current EOT filemark model. 163The model states how 164many filemarks will be written at close if a tape was being written. 165.It Cm eod , eom 166Wind the tape to the end of the recorded data, 167typically after an EOF mark where another file may be written. | 163.It Cm errstat 164Output (and clear) error status information about this device. 165For every normal 166operation (e.g., a read or a write) and every control operation (e.g,, a 167rewind), the driver stores up the last command executed and it is associated 168status and any residual counts (if any). 169This command retrieves and outputs this 170information. 171If possible, this also clears any latched error information. 172.It Cm geteotmodel 173Output the current EOT filemark model. 174The model states how 175many filemarks will be written at close if a tape was being written. 176.It Cm eod , eom 177Wind the tape to the end of the recorded data, 178typically after an EOF mark where another file may be written. |
| 179.It Cm rblim 180Report the block limits of the tape drive, including the minimum and 181maximum block size, and the block granularity if any. |
|
| 168.El 169.Pp | 182.El 183.Pp |
| 170The following commands require an | 184The following commands may require an |
| 171.Ar argument . 172.Bl -tag -width ".Cm seteotmodel" 173.It Cm sethpos 174Set the hardware block position. 175The 176.Ar argument 177is a hardware block number to which to position the tape. 178Some drives do not support this. --- 15 unchanged lines hidden (view full) --- 194and output the old and new models. 195Typically this will be 2 196filemarks, but some devices (typically QIC cartridge drives) can 197only write 1 filemark. 198You may only choose a value of 199.Ar 1 200or 201.Ar 2 . | 185.Ar argument . 186.Bl -tag -width ".Cm seteotmodel" 187.It Cm sethpos 188Set the hardware block position. 189The 190.Ar argument 191is a hardware block number to which to position the tape. 192Some drives do not support this. --- 15 unchanged lines hidden (view full) --- 208and output the old and new models. 209Typically this will be 2 210filemarks, but some devices (typically QIC cartridge drives) can 211only write 1 filemark. 212You may only choose a value of 213.Ar 1 214or 215.Ar 2 . |
| 216.It Cm status 217Output status information about the drive. 218For SCSI magnetic tape devices, 219the current operating modes of density, blocksize, and whether compression 220is enabled is reported. 221The current state of the driver (what it thinks that 222it is doing with the device) is reported. 223.Pp 224If the driver knows the relative 225position from BOT (in terms of filemarks and records), it outputs that. 226If the tape drive supports the long form report of the 227.Tn SCSI 228READ POSITION command, the Reported File Number and Reported Record Number 229will be numbers other than -1, and there may be Flags reported as well. 230.Pp 231The BOP flag means that the logical position of the drive is at the 232beginning of the partition. 233.Pp 234The EOP flag means that the logical position of the drive is between Early 235Warning and End of Partition. 236.Pp 237The BPEW flag means that the logical position of the drive is in a 238Programmable Early Warning Zone or on the EOP side of Early Warning. 239.Pp 240Note that the Reported Record Number is the tape block or object number 241relative to the beginning of the partition. 242The Calculated Record Number is the tape block or object number relative 243to the previous file mark. 244.Pp 245Note 246that the Calculated File and Record Numbers are not definitive. 247The Reported File and Record Numbers are definitive, if they are numbers 248other than -1. 249.Bl -tag -width 6n 250.It Fl v 251Print additional status information, such as the maximum supported I/O 252size. 253.It Fl x 254Print all available status data to stdout in XML format. 255.El 256.It Cm getdensity 257Report density support information for the tape drive and any media that is 258loaded. 259Most drives will report at least basic density information similar to that 260reported by 261.Nm status 262command. 263Newer tape drives that conform to the T-10 SSC and newer tape 264specifications may report more detailed information about the types of 265tapes they support and the tape currently in the drive. 266.Bl -tag -width 6n 267.It Fl x 268Print all available density data to stdout in XML format. 269Because density information is currently included in the general status XML 270report used for 271.Nm 272status command, this will be the same XML output via 273.Do 274.Nm 275status 276.Fl x 277.Dc 278.El 279.It Cm param 280Display or set parameters. 281One of 282.Fl l , 283.Fl s , 284or 285.Fl x 286must be specified to indicate which operation to perform. 287.Bl -tag -width 8n 288.It Fl l 289List parameters, values and descriptions. 290By default all parameters will be displayed. 291To display a specific parameter, specify the parameter with 292.Fl p . 293.It Fl p Ar name 294Specify the parameter name to list (with 295.Fl l ) 296or set (with 297.Fl s ) . 298.It Fl q 299Enable quiet mode for parameter listing. 300This will suppress printing of parameter descriptions. 301.It Fl s Ar value 302Specify the parameter value to set. 303The general type of this argument (integer, unsigned integer, string) is 304determined by the type of the variable indicated by the 305.Xr sa 4 306driver. 307More detailed argument checking is done by the 308.Xr sa 4 309driver. 310.It Fl x 311Print out all parameter information in XML format. 312.El 313.It Cm protect 314Display or set drive protection parameters. 315This is used to control checking and reporting a per-block checksum for 316tape drives that support it. 317Some drives may only support some parameters. 318.Bl -tag -width 8n 319.It Fl b Ar 0|1 320Set the Recover Buffered Data Protected bit. 321If set, this indicates that checksums are transferred with the logical 322blocks transferred by the RECOVERED BUFFERED DATA 323.Tn SCSI 324command. 325.It Fl d 326Disable all protection information settings. 327.It Fl e 328Enable all protection information settings. 329The default protection method used is Reed-Solomon CRC (protection method 3301), as specified in ECMA-319. 331The default protection information length used with Reed-Solomon CRC is 3324 bytes. 333To enable all settings except one more more settings, specify the 334.Fl e 335argument and then explicitly disable settings that you do not wish to 336enable. 337For example, specifying 338.Fl e 339.Fl w Ar 0 340will enable all settings except for LBP_W. 341.It Fl l 342List available protection parmeters and their current settings. 343.It Fl L Ar len 344Set the length of the protection information in bytes. 345For Reed-Solomon CRC, the protection information length should be 4 bytes. 346.It Fl m Ar num 347Specify the numeric value for the protection method. 348The numeric value for Reed-Solomon CRC is 1. 349.It Fl r Ar 0|1 350Set the LBP_R parameter. 351When set, this indicates that each block read from the tape drive will 352have a checksum at the end. 353.It Fl v 354Enable verbose mode for parameter listing. 355This will include descriptions of each parameter. 356.It Fl w Ar 0|1 357Set the LBP_W parameter. 358When set, this indicates that each block written to the tape drive will have 359a checksum at the end. 360The drive will verify the checksum before writing the block to tape. 361.El 362.It Cm locate 363Set the tape drive's logical position. 364One of 365.Fl b , 366.Fl e , 367.Fl f , 368or 369.Fl s 370must be specified to indicate the type of position. 371If the partition number is specified, the drive will first relocate to the 372given partition (if it exists) and then to the position indicated within 373that partition. 374If the partition number is not specified, the drive will relocate to the 375given position within the current partition. 376.Bl -tag -width 14n 377.It Fl b Ar block_addr 378Relocate to the given tape block or logical object identifier. 379Note that the block number is the Reported Record Number that is relative 380to the beginning of the partition (or beginning of tape). 381.It Fl e 382Relocate to the end of data. 383.It Fl f Ar fileno 384Relocate to the given file number. 385.It Fl p Ar partition 386Specify the partition to change to. 387.It Fl s Ar setmark 388Relocate to the given set mark. 389.El |
|
| 202.It Cm comp 203Set the drive's compression mode. 204The non-numeric values of 205.Ar argument 206are: 207.Pp 208.Bl -tag -width 9n -compact 209.It off --- 19 unchanged lines hidden (view full) --- 229.Sq on 230will have the desired effect of enabling the default compression algorithm 231supported by the drive. 232If this is not the case (see the 233.Cm status 234display to see which compression algorithm is currently in use), the user 235can manually specify one of the supported compression keywords (above), or 236supply a numeric compression value from the drive's specifications. | 390.It Cm comp 391Set the drive's compression mode. 392The non-numeric values of 393.Ar argument 394are: 395.Pp 396.Bl -tag -width 9n -compact 397.It off --- 19 unchanged lines hidden (view full) --- 417.Sq on 418will have the desired effect of enabling the default compression algorithm 419supported by the drive. 420If this is not the case (see the 421.Cm status 422display to see which compression algorithm is currently in use), the user 423can manually specify one of the supported compression keywords (above), or 424supply a numeric compression value from the drive's specifications. |
| 425.Pp 426Note that for some older tape drives (for example the Exabyte 8200 and 8500 427series drives) it is necessary to switch to a different density to tell the 428drive to record data in its compressed format. 429If the user attempts to turn compression on while the uncompressed density 430is selected, the drive will return an error. 431This is generally not an issue for modern tape drives. |
|
| 237.It Cm density 238Set the density for the drive. 239For the density codes, see below. 240The density value could be given either numerically, or as a string, 241corresponding to the 242.Dq Reference 243field. 244If the string is abbreviated, it will be resolved in the order 245shown in the table, and the first matching entry will be used. 246If the 247given string and the resulting canonical density name do not match 248exactly, an informational message is output about what the given 249string has been taken for. 250.El 251.Pp | 432.It Cm density 433Set the density for the drive. 434For the density codes, see below. 435The density value could be given either numerically, or as a string, 436corresponding to the 437.Dq Reference 438field. 439If the string is abbreviated, it will be resolved in the order 440shown in the table, and the first matching entry will be used. 441If the 442given string and the resulting canonical density name do not match 443exactly, an informational message is output about what the given 444string has been taken for. 445.El 446.Pp |
| 252The following density table was taken from the | 447The initial version of the density table below was taken from the |
| 253.Sq Historical sequential access density codes 254table (A-1) in Revision 11 of the SCSI-3 Stream Device Commands (SSC) 255working draft, dated November 11, 1997. | 448.Sq Historical sequential access density codes 449table (A-1) in Revision 11 of the SCSI-3 Stream Device Commands (SSC) 450working draft, dated November 11, 1997. |
| 451Subsequent additions have come from a number of sources. |
|
| 256.Pp 257The density codes are: | 452.Pp 453The density codes are: |
| 258.Bd -literal -offset 3n | 454.Bd -literal -offset 2n |
| 2590x0 default for device 2600xE reserved for ECMA 261 262Value Width Tracks Density Code Type Reference Note 263 mm in bpmm bpi 2640x01 12.7 (0.5) 9 32 (800) NRZI R X3.22-1983 2 2650x02 12.7 (0.5) 9 63 (1,600) PE R X3.39-1986 2 2660x03 12.7 (0.5) 9 246 (6,250) GCR R X3.54-1986 2 --- 6 unchanged lines hidden (view full) --- 2730x0B 6.3 (0.25) 4 63 (1,600) PE C X3.56-1986 1 2740x0C 12.7 (0.5) 24 500 (12,690) GCR C HI-TC1 1,6 2750x0D 12.7 (0.5) 24 999 (25,380) GCR C HI-TC2 1,6 2760x0F 6.3 (0.25) 15 394 (10,000) GCR C QIC-120 1,6 2770x10 6.3 (0.25) 18 394 (10,000) GCR C QIC-150 1,6 2780x11 6.3 (0.25) 26 630 (16,000) GCR C QIC-320 1,6 2790x12 6.3 (0.25) 30 2,034 (51,667) RLL C QIC-1350 1,6 2800x13 3.81 (0.15) 1 2,400 (61,000) DDS CS X3B5/88-185A 5 | 4550x0 default for device 4560xE reserved for ECMA 457 458Value Width Tracks Density Code Type Reference Note 459 mm in bpmm bpi 4600x01 12.7 (0.5) 9 32 (800) NRZI R X3.22-1983 2 4610x02 12.7 (0.5) 9 63 (1,600) PE R X3.39-1986 2 4620x03 12.7 (0.5) 9 246 (6,250) GCR R X3.54-1986 2 --- 6 unchanged lines hidden (view full) --- 4690x0B 6.3 (0.25) 4 63 (1,600) PE C X3.56-1986 1 4700x0C 12.7 (0.5) 24 500 (12,690) GCR C HI-TC1 1,6 4710x0D 12.7 (0.5) 24 999 (25,380) GCR C HI-TC2 1,6 4720x0F 6.3 (0.25) 15 394 (10,000) GCR C QIC-120 1,6 4730x10 6.3 (0.25) 18 394 (10,000) GCR C QIC-150 1,6 4740x11 6.3 (0.25) 26 630 (16,000) GCR C QIC-320 1,6 4750x12 6.3 (0.25) 30 2,034 (51,667) RLL C QIC-1350 1,6 4760x13 3.81 (0.15) 1 2,400 (61,000) DDS CS X3B5/88-185A 5 |
| 2810x14 8.0 (0.315) 1 1,703 (43,245) RLL CS X3.202-1991 5 2820x15 8.0 (0.315) 1 1,789 (45,434) RLL CS ECMA TC17 5 | 4770x14 8.0 (0.315) 1 1,703 (43,245) RLL CS X3.202-1991 5,11 4780x15 8.0 (0.315) 1 1,789 (45,434) RLL CS ECMA TC17 5,12 |
| 2830x16 12.7 (0.5) 48 394 (10,000) MFM C X3.193-1990 1 2840x17 12.7 (0.5) 48 1,673 (42,500) MFM C X3B5/91-174 1 2850x18 12.7 (0.5) 112 1,673 (42,500) MFM C X3B5/92-50 1 2860x19 12.7 (0.5) 128 2,460 (62,500) RLL C DLTapeIII 6,7 2870x1A 12.7 (0.5) 128 3,214 (81,633) RLL C DLTapeIV(20) 6,7 2880x1B 12.7 (0.5) 208 3,383 (85,937) RLL C DLTapeIV(35) 6,7 2890x1C 6.3 (0.25) 34 1,654 (42,000) MFM C QIC-385M 1,6 2900x1D 6.3 (0.25) 32 1,512 (38,400) GCR C QIC-410M 1,6 --- 6 unchanged lines hidden (view full) --- 2970x24 3.81 (0.15) 1 2,400 (61,000) CS DDS-2 5 2980x25 3.81 (0.15) 1 3,816 (97,000) CS DDS-3 5 2990x26 3.81 (0.15) 1 3,816 (97,000) CS DDS-4 5 3000x27 8.0 (0.315) 1 3,056 (77,611) RLL CS Mammoth 5 3010x28 12.7 (0.5) 36 1,491 (37,871) GCR C X3.224 1 3020x29 12.7 (0.5) 3030x2A 3040x2B 12.7 (0.5) 3 ? ? ? C X3.267 5 | 4790x16 12.7 (0.5) 48 394 (10,000) MFM C X3.193-1990 1 4800x17 12.7 (0.5) 48 1,673 (42,500) MFM C X3B5/91-174 1 4810x18 12.7 (0.5) 112 1,673 (42,500) MFM C X3B5/92-50 1 4820x19 12.7 (0.5) 128 2,460 (62,500) RLL C DLTapeIII 6,7 4830x1A 12.7 (0.5) 128 3,214 (81,633) RLL C DLTapeIV(20) 6,7 4840x1B 12.7 (0.5) 208 3,383 (85,937) RLL C DLTapeIV(35) 6,7 4850x1C 6.3 (0.25) 34 1,654 (42,000) MFM C QIC-385M 1,6 4860x1D 6.3 (0.25) 32 1,512 (38,400) GCR C QIC-410M 1,6 --- 6 unchanged lines hidden (view full) --- 4930x24 3.81 (0.15) 1 2,400 (61,000) CS DDS-2 5 4940x25 3.81 (0.15) 1 3,816 (97,000) CS DDS-3 5 4950x26 3.81 (0.15) 1 3,816 (97,000) CS DDS-4 5 4960x27 8.0 (0.315) 1 3,056 (77,611) RLL CS Mammoth 5 4970x28 12.7 (0.5) 36 1,491 (37,871) GCR C X3.224 1 4980x29 12.7 (0.5) 4990x2A 5000x2B 12.7 (0.5) 3 ? ? ? C X3.267 5 |
| 5010x40 12.7 (0.5) 384 4,800 (123,952) C LTO-1 |
|
| 3050x41 12.7 (0.5) 208 3,868 (98,250) RLL C DLTapeIV(40) 6,7 | 5020x41 12.7 (0.5) 208 3,868 (98,250) RLL C DLTapeIV(40) 6,7 |
| 3060x48 12.7 (0.5) 448 5,236 (133,000) PRML C SDLTapeI(110) 6,8 | 5030x42 12.7 (0.5) 512 7,398 (187,909) C LTO-2 5040x44 12.7 (0.5) 704 9,638 (244,805) C LTO-3 5050x46 12.7 (0.5) 896 12,725 (323,215) C LTO-4 5060x47 3.81 (0.25) ? 6,417 (163,000) CS DAT-72 5070x48 12.7 (0.5) 448 5,236 (133,000) PRML C SDLTapeI(110) 6,8,13 |
| 3070x49 12.7 (0.5) 448 7,598 (193,000) PRML C SDLTapeI(160) 6,8 | 5080x49 12.7 (0.5) 448 7,598 (193,000) PRML C SDLTapeI(160) 6,8 |
| 5090x4A 12.7 (0.5) 768 ? C T10000A 10 5100x4B 12.7 (0.5) 1152 ? C T10000B 10 5110x4C 12.7 (0.5) 3584 ? C T10000C 10 5120x4D 12.7 (0.5) 4608 ? C T10000D 10 5130x51 12.7 (0.5) 512 11,800 (299,720) C 3592A1 (unencrypted) 5140x52 12.7 (0.5) 896 11,800 (299,720) C 3592A2 (unencrypted) 5150x53 12.7 (0.5) 1152 13,452 (341,681) C 3592A3 (unencrypted) 5160x54 12.7 (0.5) 2560 19,686 (500,024) C 3592A4 (unencrypted) 5170x55 12.7 (0.5) 5120 20,670 (525,018) C 3592A5 (unencrypted) 5180x58 12.7 (0.5) 1280 15,142 (384,607) C LTO-5 5190x5A 12.7 (0.5) 2176 15,142 (384,607) C LTO-6 5200x71 12.7 (0.5) 512 11,800 (299,720) C 3592A1 (encrypted) 5210x72 12.7 (0.5) 896 11,800 (299,720) C 3592A2 (encrypted) 5220x73 12.7 (0.5) 1152 13,452 (341,681) C 3592A3 (encrypted) 5230x74 12.7 (0.5) 2560 19,686 (500,024) C 3592A4 (encrypted) 5240x75 12.7 (0.5) 5120 20,670 (525,018) C 3592A5 (encrypted) 5250x8c 8.0 (0.315) 1 1,789 (45,434) RLL CS EXB-8500c 5,9 5260x90 8.0 (0.315) 1 1,703 (43,245) RLL CS EXB-8200c 5,9 |
|
| 308.Ed | 527.Ed |
| 309.Bd -literal -offset 3n | 528.Bd -literal -offset 2n |
| 310Code Description Type Description 311---- -------------------------------------- ---- ----------- 312NRZI Non return to zero, change on ones R Reel-to-reel 313GCR Group code recording C Cartridge 314PE Phase encoded CS Cassette 315IMFM Inverted modified frequency modulation 316MFM Modified frequency modulation 317DDS DAT data storage 318RLL Run length limited 319PRML Partial Response Maximum Likelihood 320.Ed | 529Code Description Type Description 530---- -------------------------------------- ---- ----------- 531NRZI Non return to zero, change on ones R Reel-to-reel 532GCR Group code recording C Cartridge 533PE Phase encoded CS Cassette 534IMFM Inverted modified frequency modulation 535MFM Modified frequency modulation 536DDS DAT data storage 537RLL Run length limited 538PRML Partial Response Maximum Likelihood 539.Ed |
| 321.Bd -literal -offset 3n | 540.Bd -literal -offset 2n |
| 322NOTES | 541NOTES |
| 3231. Serial recorded. 3242. Parallel recorded. 3253. Old format known as QIC-11. 3265. Helical scan. 3276. This is not an American National Standard. The reference is based on 328 an industry standard definition of the media format. 3297. DLT recording: serially recorded track pairs (DLTapeIII and 330 DLTapeIV(20)), or track quads (DLTapeIV(35) and DLTapeIV(40)). 3318. Super DLT (SDLT) recording: 56 serially recorded logical tracks with 332 8 physical tracks each. | 5421. Serial recorded. 5432. Parallel recorded. 5443. Old format known as QIC-11. 5455. Helical scan. 5466. This is not an American National Standard. The reference is based 547 on an industry standard definition of the media format. 5487. DLT recording: serially recorded track pairs (DLTapeIII and 549 DLTapeIV(20)), or track quads (DLTapeIV(35) and DLTapeIV(40)). 5508. Super DLT (SDLT) recording: 56 serially recorded logical tracks 551 with 8 physical tracks each. 5529. Vendor-specific Exabyte density code for compressed format. 55310. bpi/bpmm values for the Oracle/StorageTek T10000 tape drives are 554 not listed in the manual. Someone with access to a drive can 555 supply the necessary values by running 'mt getdensity'. 55611. This is Exabyte 8200 uncompressed format. The compressed format 557 density code is 0x90. 55812. This is Exabyte 8500 uncompressed format. The compressed format 559 density code is 0x8c. 56013. This density code (0x48) was also used for DAT-160. |
| 333.Ed 334.Sh ENVIRONMENT 335.Bl -tag -width ".Ev TAPE" 336.It Ev TAPE 337This is the pathname of the tape drive. 338The default (if the variable is unset, but not if it is null) is 339.Pa /dev/nsa0 . 340It may be overridden with the 341.Fl f 342option. 343.El 344.Sh FILES 345.Bl -tag -width ".Pa /dev/*sa[0-9]*" -compact | 561.Ed 562.Sh ENVIRONMENT 563.Bl -tag -width ".Ev TAPE" 564.It Ev TAPE 565This is the pathname of the tape drive. 566The default (if the variable is unset, but not if it is null) is 567.Pa /dev/nsa0 . 568It may be overridden with the 569.Fl f 570option. 571.El 572.Sh FILES 573.Bl -tag -width ".Pa /dev/*sa[0-9]*" -compact |
| 346.It Pa /dev/*wt* 347QIC-02/QIC-36 magnetic tape interface | |
| 348.It Pa /dev/*sa[0-9]* 349SCSI magnetic tape interface 350.El 351.Sh DIAGNOSTICS 352The exit status will be 0 when the drive operations were successful, 3532 when the drive operations were unsuccessful, and 1 for other 354problems like an unrecognized command or a missing drive device. 355.Sh COMPATIBILITY 356Some undocumented commands support old software. 357.Sh SEE ALSO 358.Xr dd 1 , 359.Xr ioctl 2 , | 574.It Pa /dev/*sa[0-9]* 575SCSI magnetic tape interface 576.El 577.Sh DIAGNOSTICS 578The exit status will be 0 when the drive operations were successful, 5792 when the drive operations were unsuccessful, and 1 for other 580problems like an unrecognized command or a missing drive device. 581.Sh COMPATIBILITY 582Some undocumented commands support old software. 583.Sh SEE ALSO 584.Xr dd 1 , 585.Xr ioctl 2 , |
| 360.Xr ast 4 , | |
| 361.Xr mtio 4 , 362.Xr sa 4 , 363.Xr environ 7 364.Sh HISTORY 365The 366.Nm 367command appeared in 368.Bx 4.3 . --- 32 unchanged lines hidden --- | 586.Xr mtio 4 , 587.Xr sa 4 , 588.Xr environ 7 589.Sh HISTORY 590The 591.Nm 592command appeared in 593.Bx 4.3 . --- 32 unchanged lines hidden --- |