Dell PowerVault LTO4-120 Manuale d'uso - Pagina 20
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The tape drive has the following features:
Capacity of 800 GB (native), 1600 GB (compressed*) on a single LTO Ultrium 4 tape
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Built-in read-after-write verification for a high level of data integrity
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Data transfer rate of 120 MB per second (native)
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Burst data transfer rate of 300 MB per second
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256 MB of read/write cache memory
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Intelligent LTO-DC dual-mode compression algorithm
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Failsafe leader capture mechanism with pin pick error recovery
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Reads cartridge memory in LTO cartridges
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TapeAlert support for improved diagnostic and troubleshooting
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Internal drive: 3Gb Serial Attached SCSI interface
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External drive: 3Gb Serial Attached SCSI interface
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Speed matching (The drive can slow down to 45 MB per second minimum to match the system data rate.)
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Sleep mode for energy conservation
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Backward read and write compatibility with Generation 3 cartridges
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Backward read compatibility with Generation 2 cartridges (does not read or write Generation 1 cartridges)
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Compatible with all cartridges that bear the official Ultrium LTO logo
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Will interchange tapes with other LTO tape drives that bear the official Ultrium LTO logo
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Support for WORM (Write Once Read Many) using WORM media
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Data encryption capability using LTO Ultrium 4 media**
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* Assumes maximum compression. The capacity and transfer rate you realize in practice depends on the data set, which affects the actual compression ratio.
** Support for encryption on the LTO4-120 may be dependent on drive firmware level. Visit the Web at
supports encryption.
Tape Backup Software
You need backup software that supports the DELL PowerVault LTO4-120 tape drive. As a general rule, native backup applications (such as NTBackup and tar)
do not provide the required data streaming rate to get the full performance of your tape drive. We recommend using a backup application that provides better
memory management as well as other useful features, such as TapeAlert. For the latest supported software versions, go to
support site of your backup software vendor.
Front Panel
Figure 3. Front Panel
1. Single-character display (SCD)
2. Single red dot
3. Status light
4. Eject button
1. Single-character display. This LED presents a single-character code for diagnostic/maintenance functions, error conditions, and informational messages.
2. Single red dot. This single-character display is blank during normal operation. When a single red dot illuminates and flashes on the display, the drive has
created a dump of vital technical data to drive memory.
3. Status Light. The front panel of your Dell PowerVault LTO4-120 tape drive has a status light that provides information about the state of the tape drive. The
light can be green or amber, and (when lit) solid or flashing. See Table 1 for descriptions.
Table 1. Status Light Descriptions
Color and Condition of Status
LED
Off
Green/Solid
Green/Flashing (once
per second)
Condition of the SCD
Condition of the SCD
Panel
Dot
Off
Off
Off
Off
Off
Off
support.dell.com
to determine whether your firmware
Meaning of LED and SCD Panel and SCD Dot
The tape drive has no power or is
powered off.
The tape drive is powered on.
The tape drive is reading from the tape,
writing to the tape, rewinding the tape,
locating data on the tape, loading the
tape, or unloading the tape. If a solid
displays in the single-character display,
the drive is running a cleaning tape. The
status light also flashes green if the tape
drive contains a cartridge during the
power-on cycle. In this case, the drive
completes POST and slowly rewinds the
tape. (The process may take
approximately 13 minutes.) The light stops
support.dell.com
or visit the