Introduction: Dell PowerVault 120T DLT1 User's Guide
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Introduction: Dell PowerVault 120T DLT1 Autoloader
User's Guide
Overview
The PowerVault 120T DLT1 (Figure 1) is a fully automated,
high-performance, high-capacity, mass storage system designed to provide
unattended, near-line and off-line data storage, archiving, backup, hierarchical
storage management (HSM), and retrieval for low- and mid-range servers
and networks.
Figure 1. Dell PowerVault 120T DLT1 Autoloader
Please visit support.dell.com
for the latest OS drivers and patches for the PowerVault 120T DLT1 Autoloader.
NOTE: The PowerVault 120T
DLT1 Autoloader must be terminated to ensure proper operation.
Quick Start Guide
Follow the steps to quickly get started with the PowerVault
120T DLT1.
Figure 2. Front Inside Panel Indicators
Figure 3. Powervault 120T DLT1 Setup
Equipment Description
The PowerVault 120T DLT1 is a SCSI-2 compatible data
storage device that features high capacity, high throughput, and data compression.
Equipped with a Benchmark® DLT1 drive, the PowerVault 120T DLT1 operates
as two SCSI devices on a single SCSI bus. The PowerVault 120T DLT1 contains
up to seven DLTtapeTM IV data cartridges,
providing a formatted capacity of 280 GB (560 GB compressed) and a sustained
data transfer rate as high as 180 MB per minute (360 MB compressed per
minute). The tape media is rated at 1,000,000 passes and has a shelf life
of 30 years, providing superior media durability and data reliability.
The PowerVault 120T DLT1 is compatible with all operating
systems and environments supporting the SCSI interface, requiring either
direct support of the operating system or a suitable application program
to take advantage of its features. Hosting environments not directly supporting
SCSI interfaces, like most personal computers, require the addition of
a SCSI Host Adapter board.
The PowerVault 120T DLT1 also offers the capability
of operating in either Random-Access or Sequential-Access modes. In Random-Access
mode, the application software controls cartridge management. In Sequential-Mode,
the PowerVault 120T DLT1 operating firmware predefines cartridge management.
Refer to Troubleshooting
and Diagnostics for a detailed description of Sequential-Mode operation.
DLT1 Drive
The PowerVault 120T DLT1 is equipped with a first-generation
Benchmark® DLT1 drive. The DLT1 tape density is 40 GB (80 GB compressed)
with a native transfer rate of 3.0 MB/second. The DLT1 drive can read DLTtape
IV cartridges using the DLT4000 format. However, the DLT1 does not write
to DLTtape IV using DLT 4000 formatting.
Low Voltage Differential SCSI
The PowerVault 120T DLT1 is equipped with a Benchmark
manufactured Low Voltage Differential (LVD) SCSI interface.
CAUTION: Low voltage differential SCSI devices are not compatible with
high voltage differential SCSI devices. Equipment damage may occur if the
Dell PowerVault 120T DLT1 is connected to a high voltage differential SCSI
bus.
Connectors, Indicators and
Controls
Figures are provided illustrating the connectors, controls
and indicators located on the Operator's Panel and rear panel of the PowerVault
120T DLT1.
Figure 4. Rear Panel Connectors
Table 1. Definitions for Rear Panel Connectors
| Connectors |
|
| AC Power Connector |
Receptacle for AC power cord. |
| SCSI Channel Connectors |
Connections for the interface cable link the unit
with the host computer and/or to other devices on the SCSI channel, including
additional Dell PowerVault 120T DLT1 units. The interface cable can be
attached to either connector. |
The Operator's Panel is located behind the front
door of the PowerVault 120T DLT1. If necessary, unlock the door to access
the Operator's Panel.
Figure 5. Operator's Panel
Table 2. Definitions for Operator's Panel Indicators
| Indicators |
Description |
| Power LED (Green) |
Illuminates when the power is on. |
| Activity LED (Amber) |
A blinking light indicates two types of activity:
robotics and drive. A slow blinking interval indicates robotic activity
and a fast interval indicates drive activity. |
| Alarm LED (Red) |
Illuminates when an error has occurred. |
| LCD |
1-line by 10-character Liquid Crystal Display (LCD)
provides information about drive status, operational messages, and error
messages. |
Figure 6. Liquid Crystal Display (LCD)
Table 3. Definitions for LCD Indicators
| Indicators |
Description |
| LdR REAdY |
The normal on-line message,
LdR
REAdY, is displayed on Line 1, as do on-line,
off-line, and error messages. |
| DC |
The upper left field indicates data compression
is selected on the drive. |
| WP |
The middle left field indicates a write-protected
data cartridge is loaded into the drive. |
| CT |
The lower left field indicates the drive head needs
to be cleaned. |
| The large field in the center of the
display normally indicates the number of the cartridge currently loaded
in the drive. Whenever an error occurs an E
will appear in this field and the error message will appear on line 1. |
The Activity Bars on the right side
of the display, in conjunction with the Activity LED, indicate robotic
and drive activity.
-
A blinking bottom bar is displayed when no activity
is taking place.
-
Robotic activity is occurring when the bars slowly blink
on and off.
-
A fast interval indicates drive activity.
|
| The seven numeric fields at the bottom
of the display indicate the current cartridge inventory. Each numeric field
appears when a cartridge is present in the appropriate storage slot. |
Figure 7. Operator's Panel
Table 4. Definitions for Operator's Panel Controls
| Controls |
Description |
| MODE |
Press this button to enter or exit off-line mode
menus. |
| NEXT |
Advances to the next menu item or menu value from
the current menu position. |
| SELECT |
Executes the current menu item displayed on line
1 of the PowerVault 120T DLT1 LCD. |
| PREVIOUS |
Displays the previous menu item. |
| POWER |
Press and release this button to turn on the PowerVault
120T DLT1. Press and hold this button for 2 seconds to turn off the PowerVault
120T DLT1. |
DLT Media
The data cartridge used in the DLT1 drive is housed
in a 4-inch plastic case and employs ½-inch metal particle tape.
Always store data cartridges in a dry, cool environment.
Figure 8. DLTtape IV Data Cartridge
Use the write protect switch to determine when cartridges
are write protected or write enabled. The write protected option allows
data on the tape to be read, but does not allow the data to be altered
or erased. Write enabled allows new information to be added to the cartridge
and data deletion.
If the switch is moved all the way to the left, the
cartridge is write protected and the drive cannot write to, or erase data
from, the cartridge. The small orange rectangle is visible when the cartridge
is write protected. Additionally, an arrow, beneath the orange rectangle
and above the two lines on the switch, indicates the data is read-only.
If the switch is moved all the way to the right,
the cartridge is write enabled. The drive can write data to or erase data
from the cartridge. The orange rectangle disappears when the cartridge
is write enabled.
The arrow to the right of the write protect switch
indicates moving the switch to the right allows writing data to the cartridge.
Other Requirements
SCSI Host Adapter
The PowerVault 120T DLT1 autoloader must be connected to a
SCSI LVD interface host adapter card installed in the computer. This connection
is made either directly to the I/O connector on the host adapter card or as part
of an existing SCSI bus chain. The SCSI interface must be installed before connecting
the PowerVault 120T DLT1. Please refer to the host adapter's documentation for
installation instructions.
Application Software
A variety of backup and data storage software is available
for use with the PowerVault 120T DLT1. The type of software chosen will
depend upon storage needs and the system used. Please check with Dell Sales
or Customer Assistance if questions arise about the compatibility of a
particular software package.
Follow the instructions included within this document
to connect the PowerVault 120T DLT1 to the host computer.
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