Configuring and Operating the DLT4500 Mini-Library
DLT4000/DLT4500/DLT4700 Cartridge Tape Subsytem
4-21
4.9 Selecting Density
This section describes the mini-library's density select feature.
The user can select density by using any of the following:
1.
On a write from beginning of tape (BOT), tape density is selected by one of the
following:
•
Front panel Density Select mode
_________________________ NOTE ____________________________
The user can perform a front panel density selection at any time, but the
selection takes effect only on the next write from BOT.
___________________________________________________________
•
Programmable host selection via your operating system
•
Native default density 20 GB, 30 GB or 40 GB at 2:1 Compression
(assuming you did not use the Select mode or the host selection)
2.
On all read operations and all write append operations, the recorded density is the
density to be used.
_________________________ CAUTION _________________________
Doing any write from BOT destroys existing data on tape.
___________________________________________________________
4.9.1 Front Panel Density Select Mode
To select density via the front panel:
1.
If a tape is loaded in the drive, the display shows the tape's pre-recorded density.
2.
The user can use the mini-library OCP at various times, not just after you load a
tape. Density selection is inactive until you issue the write from BOT command.
The controller remembers the density selection state until you do one of the
following:
•
Change the density selection
•
Press the Open
button to open the door
3.
Enter Density Select
mode by pressing the Display Mode
button and then the
Select
button on the OCP. Using
Density Select
mode always overrides a host
selection.
Summary of Contents for DLT 4700
Page 1: ...DLTTM 4000 DLTTM 4500 DLTTM 4700 Cartridge Tape Subsystem Product Manual...
Page 2: ......
Page 160: ...Firmware Update From Tape 7 18 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 215: ...DLT4000 SCSI Interface DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem 8 55...
Page 304: ...DLT4000 SCSI Interface 8 144 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 342: ...Sense Key Information C 6 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Page 359: ...Index DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem 7...
Page 360: ...Index 8 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...