|
DLT
Drives - Frequently Asked Questions
| Problem |
Solution |
Details |
| Error:
Cleaning Required. Lights on the DLT drive
indicate a cleaning is required as does the
front panel LCD of the library. |
The
problem could be a drive defect. To determine
if the drive is faulty or not, use the following
steps: 1) Clean the drive multiple times in
succession.
2) Clean the drive multiple times in succession
with a new cleaning tape.
3) If the cleaning light goes off but comes
back on as soon as media is inserted into
the DLT, try different DLT cartridges including
new ones. Also use cartridges that work in
other DLT drives.
4) If all else fails, replace the drives |
The
DLT drive requires cleaning from time to time
so this can be considered a normal condition
unless the cleaning required can not be cleared
so that normal operations may proceed. |
| How
can the Firmware on a Breece Hill Library
be flashed via SCSI? |
If
the library controller is connected via SCSI
to a PC running DOS and ASPI compliant drivers
are installed and working properly, running
the following command will flash the CPU.
"wrbuffer -d *.bin". Note that the
the path must be specified correctly and the
bin file must be used. This flashes both proms
in the cpu so be aware that if this fails,
neither prom will have working code. Serial
is the preferred and safest method as it flashes
the unused prom only. Firmware for the BHT
libraries is found at their FTP site which
is located at
http://www.breecehill.com/ftp. Each firmware
is available in ASC as well as BIN format
to accommodate flashing via serial or SCSI
port. |
How
can controller firmware be flashed on BHT
library products via SCSI? |
| Can't
open door while Backup Exec is running. |
Bring
down the backup application, power cycle the
library and then open the door. Change the
door lock parameter in the application software
to activate door lock if desired. |
Customer
is running Veritas Backup Exec version 7.3
and when they try to open the door to insert
a tape or tray, the door will not open when
key is moved to the open position (9 o'clock).
If they bring down the application and power
cycle the tape library, then the door will
open. It appears there is a solenoid that
won't disengage while the application is running. |
| Drive
& Firmware compatibility? |
Only
BHT firmware may be used with BHT DLT drives.
Only BHT DLT drives are compatible with BHT
libraries. No other firmware works with BHT
drives nor can any other drive be used in
BHT libraries. Consequently, BHT firmware
and drives are not compatible with any other
manufacturers DLT drive or library products.
BHT drives can not be modified to work in
any other product, nor can any other manufacturer's
drive be made to work with a BHT library. |
Drive
& Firmware compatibility? |
| An
extra alphanumeric character is displayed
when the barcode label is read. |
In
"setup" change the "3 of 9"
to "ON" |
If
the 3 of 9 setting is set to off, an extra
alphanumeric character is displayed when the
barcode label is read. Example: B0001 will
be B0001X. |
| What
is the pinout's of the null modem cable needed
for remote access? |
Serial
data transfer cable, DB9(female/male) for
null modem applications".
1,6-->4
2--->3
3--->2
4-->1,6
5--->5
7--->8
8--->7
9 opeN |
What
is the pin out's of the null modem cable needed
for remote access? |
| Where
do I get the NT drivers for my breecehill
unit? |
The
drivers are not provided by Breece Hill. They
are provided by the application software you
are going to run.
EXAMPLE: If your running Legato they are provided
by Legato. |
Where
do I get the NT drivers for my breecehill
unit? |
| What
do I do to "Certify" a Breecehill
System that is going to be put under contract? |
Verify
the serial # of the unit
Type of drives
Run diagnostics to verify the equipment is
functioning with no errors
Call Breece Hill in Lafayette Colorado at
1-800-953-0550 give information to Tech Support
to forward to their Contracts Administrator. |
NOTE:
BreeceHill provides a "P.O. #" for
this service. We verify that the equipment
is working properly before activating a Service
Agreement. |
| After
loading and bringing up ARCserve, the DLT
drive is not shown as a device in the 'Device
Management' screen. |
1.
Go to Control Panel-->Tape Devices
2. Remove
the installed native NT tape driver.
3. Restart
the server
|
ARCserve
uses drivers written by Cheyenne rather than
the NT drivers that are included with NT 4.0;
If the NT driver is loaded, the device is
not available for ARCserve. |
| Sun
Solaris 2.3, Read Errors with DLT drives.
Drive can be written to, but attempts to read
from it generate "impl_read_hwmap invalid
pte" errors. |
Edit
the st.conf file, and modify the third parameter
in the <DLT data> line. It currently
reads '0', and should read '1024' instead.
The value of 0 defines the block size as variable,
which does not work properly. The value of
1024 sets the block size at a fixed 1024 bytes.
Refer to Quantum's website (http://www.quantum.com)
for initial configuration information mentioned
previously. |
Quantum
has information available that details configuration
specifics (inserted into the st.conf file)
for DLT drives with Solaris 2.3, 2.4, and
2.5. The configuration information sets the
device at variable block size, which does
not work properly with Solaris 2.3. |
| The
DLT7000 firmware does not allow Windows 2000
Media Services to run properly. |
The
DLT7000 drive must have a firmware revision
that is greater than or equal to V40. In the
Revision string within Inquiry, the last two
digits indicate the drive revision. For example,
if the Inquiry Revision is xx28 or greater,
this works fine with Media Services. If the
last two digits are less than 28 the drive
will not function properly. |
The
nature of the problem is that drives with
firmware earlier than V40 do not report Mode
Sense Header - Medium Type properly for some
media. |
| Error
12 with ARCserve for NT4. |
ARCserve
for NT4 assigns the lowest logical SCSI ID
to the drive with the lowest physical SCSI
ID address. (ID-3 is assigned to physical
element 116/drive A and ID-4 is assigned to
physical element 117/drive B.) Drive A must
be set to the lower SCSI ID than drive B.
Any other configuration will not work properly. |
ARCserve
for Windows NT assigns element address 116
to the lowest SCSI ID of the drives. If drive
B has a lower SCSI ID than drive A, ARCserve
incorrectly assigns element 116 to the SCSI
ID for drive B. |
| Poor
performance/throughput is seen, even on high-end
systems using DLT7000s. |
According
to the ARCserve for NT QA deprtment at Cheyenne,
the lowest SCSI ID must be the first drive
(second lowest SCSI ID should be the second
drive, etc...). Any other configuration is
not supported and will not work. |
ARCserve
for NT has the ability to read tapes written
in MTF (Microsoft Tape Format), among others.
While ARCserve correctly identified the tape
label, it incorrectly identified the tape's
format as 8mm rather than DLT. This forces
the 8mm driver to be used, drastically impeding
performance. |
| When
scan of SCSI bus is completed, the library
or drive is being seen as all ID's. |
Make
sure that no ID's are used twice and it will
eliminate this problem. |
The
reason this occurs is because the device that
is showing up as all ID's is set to the same
SCSI ID as the host adapter. |
| How
do I convert the Legato Networked inquiry
string hexadecimal value giving the DLT tape
drive firmware to a number that matches Breece
Hill's list of downloadable firmware on the
ftp website? |
Either
check the list in the Breece Hill training
document titled "Q - series Technical
Presentation" or just strip off the last
two digits of the inquiry string and convert
this two-digit hexadecimal number to decimal
to get the Breece Hill version number. Compare
this number with the versions available on
the ftp website |
EXAMPLE:
Legato inquiry string returns "2150".
Change last two digits, 50(hex) to decimal
(5X16)+0= 80+0=80. This is PSS version 7v80.
The "7" stands for the DLT7000 tape
drive in this case. |
| What
are the specifications for barcodes on DLT
Tapes? |
The
tape cartridge label contains both a human
readable and machine-readable section. The
machine-readable section is referred to as
the barcode section. Barcodes encode text
as a series of wide and narrow black bars
and white spaces. |
The
bar code must be printed in accordance with
the ANSI MH10.8M-1983 specification and other
requirements to achieve long, reliable life.
The bar code is the industry standard Code
39 (3 of 9). By enabling a self-checking feature
called ?checksum?, additional accuracy when
decoding barcode is ensured. |
|
| |
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