StorageWorks 10/20-GB DLT Handbuch

Printed in U.S.A. EK–SM1TB–RC. A01

10/20-GB DLT

Cartridge Tape Drive

Operator’s Reference Card

Use this card as a quick reference when operating the

10/20-GB DLT tape drive. For detailed information, see

the User Guide (EK-SM1TB-UG. A01).

110/20-GB DLT Front Panel

All normal-use operating controls and indicators are

provided on the front panel of the 10/20-GB DLT tape

drive, as shown below:

2 Power-On Self-Test

(POST) Sequence

When you turn on operating power to the 10/20-GB DLT

tape drive (i.e., turn on pedestal power if the DLT tape

drive is mounted in a StorageWorks enclosure, or

depress top (“1”) portion of 1/0 rocker switch on rear

panel if the DLT tape drive is a tabletop unit), the

following results should occur, in sequence:

NOTE 1

If the WRITE-PROTECTED indicator flashes

orange and the TAPE IN USE indicator

flashes yellow continuously for more than

30 seconds in the following test, then the

POST test has failed. Repeat the test to

clear the failure (power off and then on); if

the test still fails, replace the drive.

NOTE 2

The indicator sequence described in the

following procedure describes what

happens when the 10/20-GB DLT unit is

connected to an active SCSI bus. If the

SCSI bus is not connected, all left-side

panel indicators remain on at all times while

power is applied to the unit.

1. All left-side panel indicators will initially light, with

all right-side indicators then lighting sequentially,

from top to bottom.

2. If the SCSI bus is not connected, all left-side panel

indicators will stay lit. If the SCSI bus is connected,

all left-side panel indicators should go out within 1

second after power is applied, while all right-side

panel indicators should remain lit for 3 to 5 seconds

and then go out except for the TAPE IN USE indicator.

3. The TAPE IN USE indicator should continue to blink

for a few seconds, while the tape mechanism

searches for tape, and then go to one of the

following two states:

a. If no tape cartridge is already mounted in the

DLT tape drive, the TAPE IN USE indicator

should go out within 20 seconds, with the green

OPERATE HANDLE indicator then becoming

steadily lit to indicate that the door latch is

released and that the cartridge insert/release

handle can be pulled up to allow insertion of

tape. (To load tape, see Section 4.)

b. If a tape cartridge is already mounted in the

DLT tape drive (left over from previous use),

the TAPE IN USE indicator should continue to

blink while the tape mechanism engages the

tape and then moves the tape under the

recording heads, at which time the TAPE IN USE

indicator should become steadily lit. You can

now either record on or read from that tape, or

else press the Unload push-button switch to

direct the DLT tape drive to unlatch the

insert/release handle so that you can remove the

mounted tape.

3Meaning of Indicators and Controls

Use the information in the following table to determine

the DLT tape drive’s operating condition:

Indicator State Meaning

TZ87

(yellow) On (default) Tape in DLT tape drive

was recorded in TZ87

format.

Blinking Tape in DLT tape drive

was last recorded in

some other density, but

TZ87 density has been

selected for new

recording. (This selection

will be written from

beginning of tape.)

TZ85 &

TZ86

(yellow)

Same as 10/20-GB DLT, preceding,

except applicable to designated density

format.

(Continued on Next Panel)

Indicator State Meaning

Compress

(yellow) On Compression mode is

enabled.

Off Compression mode is

disabled.

Density

Override

(yellow)

Blinking DLT tape drive is in

density selection mode.

On Density selection was

set from front panel.

Off (default) Density selection was

chosen by host

computer (automatic

mode).

DENSITY

SELECT

(PUSH-

BUTTON)

Recessed

(pushed

in)

If the Density Override

indicator is off,

activates the density

selection mode,

causing that indicator

to blink. If the Density

Override indicator is

blinking, selects the

next higher density

format option.

At rest

(out) Normal inactive

condition for this

spring-loaded push-

button switch.

WRITE

PROTECTED

(ORANGE)

On Loaded tape is write-

protected.

Off Loaded tape is write-

enabled.

TAPE IN USE

(yellow) On Tape is loaded, ready for

use.

Blinking Tape is moving.

USE

CLEANING

TAPE

(yellow)

On Drive write/read heads

need cleaning, or else

current data cartridge is

bad.

(Continued on Next Panel)

Indicator State Meaning

Off Cleaning is

unnecessary (or

complete if just done).

Remaining

on after you

unload

cleaning

tape

Cleaning tape attempted

to clean the drive heads,

but was expired

(insufficient cleaning

area), so the heads were

not adequately cleaned.

Turns on

again when

the data

cartridge is

loaded after

cleaning

Data cartridge may be

defective; try another

cartridge.

OPERATE

HANDLE

(green)

On Cartridge

insert/release handle is

unlocked and can be

operated.

Off Cartridge

insert/release handle is

locked. Do not operate

handle.

UNLOAD

(PUSH-

BUTTON)

Recessed

(pushed

in)

Used to unlock the

tape cartridge

insert/release handle

(press and hold for 1 to

2 seconds).

At rest

(out) Normal inactive

condition for this

spring-loaded push-

button switch.

All left or

right

indicators

simultaneo

usly

Steadily On Power-on self-test is in

progress (momentary

sequence triggered

whenever power is

applied to the DLT tape

drive unit).

Blinking A DLT tape drive fault

has occurred. Press the

Unload button or turn

DLT tape drive unit

power off and on again

Indicator State Meaning

to clear the error. If the

error remains, contact

service personnel.

4Loading A Tape Cartridge Into the

DLT Tape Drive

The cartridge insert/release handle on the front of the

drive provides outline procedures for loading a cartridge

into the DLT tape drive (right side of handle) and

unloading a cartridge from the drive (left side of handle).

The following is a more detailed version of the

procedure for loading a cartridge, as illustrated below.

CAUTION

Never operate the cartridge insert/release

handle unless the green OPERATE HANDLE

indicator is steadily lit.

1. When the green OPERATE HANDLE indicator is lit

steadily, pull the cartridge insert/release handle open

by pulling the bottom edge up and forward.

2. Insert rear end of cartridge (opposite from end

containing write-protect switch) into the aperture

behind the handle, right side up (name on top, with

arrows on front write-protect switch pointing down).

3. Push the cartridge assembly into the drive until the

cartridge reaches its full-stop position.

4. Push the insert/release handle closed by pushing

front edge back and down.

After you close the door, the green OPERATE HANDLE

indicator goes out and the yellow TAPE IN USE indicator

blinks to show that the tape is loading. When the tape is

at the BOT (beginning of tape) marker, the yellow TAPE

IN USE indicator lights steadily. The tape is then ready

for use.

5Unloading a Tape Cartridge from

DLT Tape Drive

CAUTION

Remove a cartridge from the DLT tape

drive before turning off or powering down

the host system. Failure to remove a

cartridge can result in damage to the

cartridge and/or to the DLT tape drive.

To prolong the life of a cartridge, return the

cartridge to its plastic case and secure the

case cover when you remove the cartridge

from the DLT tape drive

The cartridge insert/release handle on the front of the

drive provides outline procedures for loading a cartridge

into the DLT tape drive (right side of handle) and

unloading a cartridge from the drive (left side of handle).

The following text is a more detailed version of the

procedure for unloading a cartridge, as illustrated on the

next panel.

NOTE

The following procedure presumes that the

operator manually initiates the unloading

sequence by pressing the UNLOAD push-

button. In some host-driven applications,

the application software may issue the

appropriate system software command to

initiate the same unloading sequence.

CAUTION

Never operate the cartridge insert/release

handle unless the green OPERATE HANDLE

indicator is lit steadily.

1. Press the UNLOAD push-button on the front panel’s

right side (or issue the appropriate system software

command). The yellow TAPE IN USE indicator blinks

as the tape rewinds.

2. When the green OPERATE HANDLE indicator lights

steadily, pull the cartridge insert/release handle open

by pulling the bottom edge up and forward.

3. Remove the cartridge by pulling it forward from the

aperture.

4. Push the insert/release handle closed by pushing

front edge back and down.

6Operating Hints

• Never operate the cartridge insert/release

handle if the green OPERATE HANDLE light is not

on steadily or blinking.

• If DLT tape drive behaves erratically with a

given tape cartridge, open inspection door at

rear of cartridge to make sure that cartridge

leader is in its correct position (see figure,

below).

• When mounting a tape cartridge, insert the tape

cartridge into the DLT tape drive with a slow,

steady motion.

• If the yellow Use Cleaning Tape indicator lights,

unload the data cartridge from the DLT tape

drive and then load a CleaningTape III cartridge

in its place. The cleaning cartridge automatically

cleans the read/write heads and then unloads

when cleaning is complete. Be sure to remove

the cleaning cartridge after cleaning is complete,

so as to avoid repeated operation, which would

cause unnecessary wear to the read/write

heads.

7Cartridge Compatibility

Cartridge Type/Format

(Capacity) Read/Write Ability in

the 10/20-GB DLT tape

drive

CompacTape III/TK85

(2.6 GBF) Read/write in 85 mode.

CompacTape III/TK86

(6.0 GBF) Read/write in 86 mode.

CompacTape III/TK87

(10.0 GBF,

uncompressed; 20.0

GBF with 2:1

compression)

Read/write in 87 mode.

CompacTape III/Blank Read/write in 85†, 86†

or 87 mode, as

selected.

†Read/write, backward compatible with DLT tape

drive of selected density.

The 10/20-GB DLT tape drive cannot write TK70,

TK50, or TZ30 format on any cartridge and cannot read

any of those formats.

First Edition, April 1994

The information on this reference card is subject to

change without notice and should not be construed as

being a comment by Digital Equipment Corporation.

Digital Equipment Corporation assumes no responsibility

for any errors that may appear in this document.

The following are trademarks of Digital Equipment

Corporation:

CleaningTape III, CompacTape III, TK, and the

Digital logo.

reserved.

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