getting started guide
hp StorageWorks
DAT tape drive
removable model
DAT 40m, DAT 72m
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hp tape array 5300
hp tape array 5300
Removable drives - contents
Pre-Installation
Before you start page 3
Backup software and drivers page 5
Using the CD-ROM page 7
Checking the SCSI connection page 9
Checking the configuration switches (UNIX systems) page 11
Installing the tape drive
Step 1: Install the drive page 13
Step 2: Set the drive’s SCSI ID page 15
Step 3: Verify installation page 17
Using the tape drive
Your HP StorageWorks DAT tape drive page 19
Use the correct media page 21
Register your tape drive page 23
Replacing the drive page 25
Using HP OBDR page 27
Diagnostic tools page 29
Optimizing performance page 30
Troubleshooting page 31
Problems with cartridges page 36
Other sources of information page 38
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© 2003-2004 by Hewlett-Packard Development Company, L.P.
November 2003
Part Nu mber: C7497-90905
Hewlett-Packard Company makes no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of merchantability and fitness for a
particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for
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the prior written consent of Hewlett-Packard. The information contained in this document is
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registered trademarks of Microsoft Corporation.
UNIX
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contained herein. The information is provided ”as is” without warranty of any kind and is
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®, MS-DOS®, MS Windows®, Windows® and Windows NT® are U.S.
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Product Details
Write your tape drive details here so you can find them easily if you need them. The model name is on the
front of the drive and the product and serial numbers are on a label on the bottom of the drive.
Model (type of drive):
Model (number):
Serial (number):
Warranty Serial (number):
Date purchased/installed:
SCSI ID:
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Before you start
HP StorageWorks DAT models
This guide describes how to install and operate the following HP StorageWorks DAT rackmount tape drive models:
•HPStorageWorksDAT72
•HPStorageWorksDAT40
Which operating systems are supported?
HP StorageWorks DAT drives can be connected to servers running under Windows®,
NetWare, UNIX, Tru64 and Linux. Refer to the “HP StorageWorks Tape Software
Compatibility” topic on our World Wide Web site (
information about the operating system versions that are supported.
Which rackmount systems can I use?
HP StorageWorks DAT removable tape drives are used in conjunction with the
HP Tape Array 5300 system, which can be used with both full-height and half-height tape
drives. It will hold up to four HP StorageWorks DAT tape drives. The tape array is designed to
be installed into HP, IBM and other compatible 19” rackmount systems. It must be properly
installed and configured. Refer to your tape array documentation for further details.
Airflow requirements
www.hp.com/go/connect) for more
The HP Tape Array 5300 is designed to provide adequate airflow for up to four half-height or
up to two full-height tape drives. As long as the tape array is fully populated, it will provide
adequate airflow for your HP StorageWorks DAT tape drives. If you have unused bays in the
tape array, you must install the blanking plates provided with the tape array. This ensures that
there is adequate airflow to the drives. See the documentation with the tape array for details
on installing blanking plates.
You should ensure that ventilation is adequate at the front and rear of the tape array.
How do I connect the drive to my server?
The following guidelines apply:
• For optimum performance the drive should be the only device on the SCSI bus.
• If you daisy-chain devices, make sure that devices are of the same SCSI type and that
each device on the same SCSI bus has a unique SCSI ID and is terminated appropriately.
Do not daisy-chain more than two devices on the same SCSI bus (for example, two LVD
Wide Ultra drives).
• Always terminate the SCSI bus.
• Do not attach the drive to the same SCSI bus as a your disk drive or to a RAID controller.
The individual tape drives are connected to their host server via the high density LVD/SE SCSI
connectors on the back of the tape array. They do not require any SCSI cables to plug into the
tape array. However, suitably-rated cabling and terminators are required to connect the tape
array with the SCSI host. You will need a properly installed and configured SCSI host bus
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adapter (HBA) or a built-in SCSI controller on your SCSI host with a spare low voltage
differential (LVD) SCSI port and LVDS-compatible cables and terminators. See “Checking the
SCSI connection” on page 9.
Why is the SCSI bus type important?
The SCSI bus type determines the speed at which data can be transferred between devices on
the bus and the maximum length of cable that can be used. The drives support a burst transfer
rate of 40 MB/sec. To benefit from this level of performance, it is important to ensure that the
drives are connected to a SCSI bus of a similar or higher specification. This means that you
need:
• An Ultra Wide, Ultra2 Wide, Ultra3 (160) or Ultra4 (320) SCSI bus. Ultra Wide SCSI
supports the maximum bus speed of 40 MB per second, Ultra2, Ultra3 and Ultra4 SCSI
exceeds this.
• LVD-rated SCSI cabling and terminators. The LVD interface enables the data to be
transferred at the drive's maximum rate and provides a maximum cable length of 12 meters.
If you attach the drive to a lower specification SCSI bus, it may still work but data will not be
transferred as quickly and you will need to use shorter cable lengths.
Note The drives are not compatible with high voltage differential (HVD) SCSI devices.
How can I check the SCSI bus type and SCSI ID?
For many operating systems, you can install HP Library & Tape Tools from www.hp.com/
support/tapetools
configuration (see page 29). This will provide information about the SCSI bus and the SCSI
IDs in use. See also the SCSI topic in the electronic User’s Guide on the
HP StorageWorks Tape CD-ROM for other ways of checking the SCSI bus type.
and run the “Install Check” to check your server’s current SCSI
Do I need additional items for installation?
• You will need to order the correct size SCSI cables and terminators to suit the particular
configuration of your tape array. Cable and terminator options are listed at the HP tape
array support web site:
local HP sales office. Refer to your tape array’s Getting Started Guide for details of how to
install SCSI cables and terminators on the rear panel of the tape array. The latest version of
this document can also be downloaded from
• If you do not have a spare, suitably rated SCSI connector on your server, you must install a
new HBA (also known as a SCSI card). This should be of an Ultra Wide or higher SCSI
specification. We recommend that a 64-bit Ultra 3 (160) HBA is used. You will need to
purchase and install the new HBA into an unused, 64-bit PCI expansion slot within your
server before installing your tape drive. (The kit can also be installed in a 32-bit PCI
expansion slot, but performance may be degraded.)
Refer to our World Wide Web site for recommended products, configurations and ordering
information:
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www.hp.com/go/connect or www.hp.com/support.
www.hp.com/go/tapearray, and can be ordered from your
www.hp.com/go/tapearray.
Backup software and drivers
Backup software
For optimum performance it is important to use a backup application that is appropriate for
your system’s configuration. In a direct attach configuration, where the tape drive is attached
to a standalone server, you can use backup software that is designed for a single server
environment. In network configurations you will need backup software that supports enterprise
environments. HP, Veritas, Legato, Yosemite and Computer Associates all provide suitable
products. Further details about these and other products that may be appropriate can be
found on our connectivity web site.
1 Go to our connectivity web site:
2 Select
3 Select your combination of operating system and tape drive model in the table. A list of
4 Make sure you have a backup application that supports HP StorageWorks DAT tape drives and
software compatibility.
supported backup applications is displayed. This will also tell you whether your configuration
is compatible with HP One-Button Disaster Recovery, HP OBDR. (All HP StorageWorks DAT
tape drives support HP OBDR. However, you can only use this feature if your system
configuration and backup application also support it. See “Using HP OBDR” on page 27.)
download any upgrades or patches, if required.
www.hp.com/go/connect and select tape backup.
Drivers
Windows users
Before you install the tape drive, download the HP driver from our web site: www.hp.com/
support
Windows NT, Windows 2000, Windows XP and Windows Server 2003 drivers. This will tell
you whether you need to install the driver before or after installing the tape drive.
If you do not have internet access, you can also download drivers from the
HP StorageWorks Tape CD-ROM, but these may not be the latest versions available.
UNIX users
The recommended backup applications use the operating system’s standard, built-in device
drivers. To upgrade drivers we recommend that you patch to the latest version of the operating
system or configure device files, as described in the UNIX Configuration Guide on the CDROM.
. Refer to the accompanying README file for specific installation instructions for
IA64 users
If you are installing on an IA64 system, such as an HP Integrity server, check www.hp.com/
go/connect
and drivers.
for the latest information on the availability of backup application upgrades
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HP Product
Registration
Drivers
User
Documentation
HP Library &
Tape Tools
CD-ROM Guide
Figure 1: the HP StorageWorks Tape CD-ROM
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Using the CD-ROM
The HP StorageWorks Tape CD-ROM contains drivers, useful utilities and information to help
you install and use your tape drive. For most operating systems, HP Library & Tape Tools will
help you check SCSI ID information on the SCSI bus before installation. The UNIX
Configuration guide on the CD-ROM also contains information about checking SCSI IDs on
UNIX systems.
HP product registration
To register your new tape drive electronically via the web, use the “Product Registration” link
on the HP StorageWorks Tape CD-ROM.
Drivers
For detailed information about drivers, refer to the appropriate README file in the DRIVERS
directories on the HP StorageWorks Tape CD-ROM. There is a separate sub-directory for each
operating system.
User documentation
Refer to the “User Documentation” topic on the HP StorageWorks Tape CD-ROM for a UNIX
Configuration guide and an online User’s Guide that provides more detailed information
about using your HP StorageWorks DAT tape drive.
Refer to your backup application’s documentation for instructions on how to back up and
restore data.
HP Library & Tape Tools
HP Library & Tape Tools software provides diagnostic and troubleshooting utilities. It allows
you to identify your product correctly, check SCSI ID information on the SCSI bus, run tests,
carry out firmware upgrades and, if necessary, generate comprehensive troubleshooting
information for support calls. Use the link on the HP StorageWorks Tape CD-ROM to access
our Support web site,
version of this software. For further details see page 29.
CD-ROM guide
The CD-ROM guide provides an overview of the CD directory structure and information about
the languages in which the contents of the CD-ROM are available. It also contains a set of
URLs and links for further information.
www.hp.com/support/tapetools, and download the latest
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Figure 2: checking the SCSI connection
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Checking the SCSI connection
Use the following questions to help you check your SCSI connection. Many users can use HP
Library & Tape Tools to check the SCSI bus type, see page 29. If you answer ‘Yes’ to all these
questions, you are ready to install your tape drive. If you answer ‘No’, you will probably need
to purchase and install additional items. For compatibility and product details, go to
www.hp.com/go/connect.
1 Is there a spare SCSI port on
your server?
Yes
2 Is the SCSI bus type correct
for the SCSI specification of
the drive?
Yes
3 Will the drive be the only
device on the bus? This is the
recommended configuration.
Do not connect to a RAID
controller or the same SCSI
bus as your disk drive.
Yes
4 You are ready to install the
drive.
No
No
No
Purchase and install one of the recommended
HBAs into an unused 64-bit PCI expansion
slot. (The HBA can also be installed in a 32bit PCI expansion slot, but performance may
be degraded.)
See table below. If the SCSI bus differs from
the recommended specification for the drive,
performance of either the drive or the bus may
be impaired. Consider replacing your card
with one of the recommended HBAs.
If you have an Ultra HBA, performance may
be impaired. Consider installing (if you have
a spare PCI slot) or replacing your card with
an Ultra 2, Ultra 3 (160) or Ultra 4 (320)
HBA.
SCSI Bus Type Supported
Ultra wide LVD Yes. This is a recommended configuration as long as the drive is
the only device on the SCSI bus.
Ultra 2 LVD, Ultra 3 (160) LVD,
Ultra 4 (320) LVD
Ultra wide, single-ended Yes. But this is not a recommended configuration as it will restrict
Ultra narrow, single-ended Yes. But this is not recommended as it will severely restrict
High Voltage Differential No. The drive will not work and you may damage the drive or
Yes. These are recommended configurations, particularly if there
are several devices on the SCSI bus.
performance.
performance and you will need a suitable cable or adapter.
controller
table 1: supported SCSI bus types
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ON
10
1
Figure 3: checking UNIX configuration switches
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2
4
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Checking the configuration switches (UNIX systems)
Only read this section if you are installing your tape drive into a UNIX system. Go to “Step 1:
Install the drive” on page 13 if you are installing your drive into a Windows PC system.
1 Check the UNIX Configuration Guide on the HP StorageWorks Tape CD-ROM for specific
advice for your operating system.
The following table summarizes the typical switch settings for different types of server.
Switch Number
System Type 12345678
Default and most PC systems On On Off On On On On On
HP Tru64 v.5.0 systems
HP Tru64 v.4.0 systems On On Off On On On On Off
HP OpenVMS systems On On Off On On On On On
HP-UX systems
IBM AIX systems On On Off On On On On On
Linux systems On On Off On On On On On
Sun Solaris, version 2.7 and
higher
Sun Solaris, version 2.6 and
lower
On On Off On On On On On
On On Off On On On On On
On On Off On On On On On
On On Off Off On On Off Off
2 If your UNIX configuration requires it, change the configuration switches located on the
underside of the tape drive from the default settings shown in figure 3.
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extractor lever
Figure 4a: extractor lever in the out position
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Figure 4b: installing the drive
Step 1: Install the drive
HP StorageWorks DAT removable tape drives are designed to be installed in a rack-mounted
HP Tape Array 5300. Refer to the documentation supplied with your tape array for tape array
installation instructions.
1 Before installing a tape drive, make sure that the extractor lever is in the fully open position
(pulled out) as shown on figure 4a.
Caution When handling a tape drive, hold the drive by the side carrier framework. To avoid possible
damage, do not hold the body of the drive and do not push or pull on the tape drive’s front
panel.
2 Slide the tape drive into one of the open bays, as shown on figure 4b, ensuring that the guide
rails on both sides of the drive locate into the slots on the partition wall. Carefully but firmly
ensure the tape drive is pushed fully in so that the rear connectors are securely seated. The
extractor level will close slightly.
Note Correct alignment of SCSI tape drives in the tape array is essential to ensure a secured
connection is made between the interface of the drive and the interface of the array.
3 Push on the extractor lever to complete the insertion and to lock the tape drive in place.
4 If there are less than four half-height drives installed, insert a blanking plate into the empty
bays. This is essential to ensure adequate airflow is maintained. Failure to do so may affect
tape drive performance.
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14
Figure 5: setting the SCSI ID
Step 2: Set the drive’s SCSI ID
To set the tape drive’s SCSI ID you need to set the appropriate switch on the rear of the
tape array. The number of address switches corresponds to the number of tape drives that
can be inserted into the tape array.
Each device on the SCSI bus must have a unique SCSI ID.
• For HP ProLiant servers where the tape drive is connected to the built-in SCSI bus, we
recommend that the tape drive is assigned a SCSI ID between 1 and 6.
• For all other servers and when used with separate HBAs, it can be assigned any unused ID
between 0 and 15. Do not use SCSI ID 7, which is reserved for the SCSI controller. SCSI ID
0 is typically assigned to the boot disk and should also not be used unless the tape drive is
on a dedicated SCSI bus.
Typically, the HP Tape Array may hold up to four tape drives where each drive is attached to
a separate server. Under this configuration, the SCSI IDs of each tape drive will not conflict
with each other as they are each installed onto a separate SCSI bus.
However, if you daisy-chain devices make sure that the devices are of the same SCSI type and
that each device on the same SCSI bus has a unique SCSI ID. Do not daisy-chain more than
two devices on the same SCSI bus and make sure that the end device is terminated.
1 Decide which SCSI ID to use.
For many operating systems y
HP StorageWorks Tape CD-ROM and run the “Install Check” to check your computer’s
current SCSI configuration (see
and the SCSI IDs in use. The UNIX Configuration Guide on the HP StorageWorks Tape
CD-ROM, also provides instructions on how to determine the SCSI IDs of existing devices.
ou can install HP Library & Tape Tools from the
page 29). This will provide information about the SCSI bus
2
Set the appropriate switch. Figure 5 shows the address switch on the back panel of the
HP Tape Array 5300.
The HP Tape Array 5300 has four SCSI ID switches to enable the installation of up to four
half-height drives.
3 Make sure that a SCSI terminator is attached to the appropriate SCSI-OUT connector on the
back of the tape array.
Why does the tape drive need a terminator?
Terminators are essential, as they provide the correct voltages on the SCSI bus and prevent
unwanted signal reflections from interfering with data transfers. The rule is:
There must be termination at both physical ends of the bus and only at the ends.
Normally the HBA forms one end of the SCSI bus and provides termination. You, therefore,
need to ensure that the other end of the bus is terminated. Attach the terminator to the
appropriate SCSI-OUT connector on the tape array.
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lift cartridge door
Figure 6a: loading a cartridge
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Figure 6b: unloading a cartridge
Step 3: Verify installation
Once you have installed the drive hardware, verify that the tape drive is functioning properly
before you store your valuable data.
Check operation
Ensure that you have downloaded any drivers and upgrades necessary for your backup
application (see page 5).
1 Switch on the drive and the server. The tape drive will run its hardware self-test, which takes
about 5 seconds. At the end of the hardware self-test, both front panel lights should be off.
See “Your HP StorageWorks DAT tape drive” on page 19 for more information about front
panel lights.
2 Verify that the tape drive installation was successful.
For many operating systems, you can use HP Library & Tape Tools as described on page 29.
The UNIX Configuration Guide on the HP StorageWorks Tape CD-ROM also includes a
verification procedure.
Note If you encounter a problem during this verification procedure, turn to “Troubleshooting” on
page 31 for help in diagnosing and fixing the problem.
3 You are now ready to carry out a backup and restore test to check that the drive can write data
to tape. Use the blank cartridge supplied with the tape drive.
To load a cartridge
1 Lift the cartridge door on the front of the tape drive and insert the cartridge into the slot in front
of the drive with the white arrow uppermost and facing the drive door. Apply gentle pressure
until the drive takes the cartridge and loads it. (See figure 6a.)
2 The Ready light flashes green while the drive performs its load sequence. When the cartridge
is loaded, the Ready light shows steady green.
To perform a backup and restore test
Refer to your backup application documentation for specific instructions.
1 Perform a trial backup of data to tape.
2 Perform a trial restore of data from tape.
To unload a cartridge
Caution Never try to remove a cartridge before it is fully ejected.
1 Press the Eject button on the front panel. (See figure 6b.)
The drive completes any task it is currently performing, winds the tape to the beginning, and
ejects the cartridge. The sequence will take about 25 seconds for a write-enabled cartridge
and 10 seconds for a write-protected cartridge.
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extraction lever
cartridge door
18
Tape LED
Clean LED
Eject button
Figure 7: tape drive controls and indicators
Your HP StorageWorks DAT tape drive
There are two LEDs and an eject cartridge button on the front panel of your tape drive. See
page 17 for more information about loading and unloading cartridges and page 36 for
information about forcing ejection.
Front panel LEDs
There are two LEDs, labeled Tape and Clean. (See figure 7.)
Tape LED Clean LED Meaning
on off The cartridge is loaded and the drive is ready.
or
flashing
slowly
flashing
rapidly
off on
off or
flashing
rapidly
flashing
slowly
off
off The cartridge is loaded, activity is occurring.
flashing
slowly
flashing
slowly
The cartridge is loading or unloading, or self-test is
in progress.
This is the Error Condition Signal.
HP StorageWorks DAT drives perform a
comprehensive self-test during power-up. If a hard
error causes the self-test to fail, the clean light
changes to steady amber. Run HP Library & Tape
Tools to help diagnose the problem. (See
page 29.)
This is the Media Caution Signal.
1 Wait for the current operation to finish, then
insert a different tape and repeat the operation that
was being performed.
2 If the media caution signal does not show this
time, it indicates that the original cartridge was
nearing the end of its useful life. Copy any data
you want to keep from the original tape onto a
new tape if possible, then discard the old tape.
3 If the media caution signal appears again with
the second tape, the tape heads need cleaning.
4 If the media caution signal appears after using
a cleaning cartridge, the cleaning cartridge has
probably expired and should be discarded.
When the two LEDs flash alternately, the tape drive
is in disaster recovery mode, restoring the
operating system (see “Running HP OBDR” on
page 28).
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tab closed, cartridge
write-enabled
Figure 8: write-protecting cartridges
tab open, cartridge
write-protected
Use the correct media
For best performance we recommend HP branded media. Order online at:
www.hp.com/go/storagemedia
Guide on the HP StorageWorks Tape CD-ROM for ordering information for tape cartridges
and cleaning cartridges.
Data cartridges
For optimum performance and storage capacity, use tape cartridges that match your drive's
format, and normally use only one cartridge per day. Ideally, use HP’s DDS-4 cartridges with
DAT 40 tape drives and HP’s DAT 72 cartridges with DAT 72 tape drives.
Although HP StorageWorks DAT tape drives are fully backward compatible, old tape formats
are more abrasive than later generations and using older tape formats can reduce the life
expectancy of the tape drive. The compatibility between drive models and cartridges is
summarized in the following table. Shaded boxes show the recommended media for each
tape drive.
DDS-1
90 meter
HP StorageWorks DAT 40 read only read/write read/write
HP StorageWorks DAT 72 not supported not supported read/write read/write
* Capacity assumes 2:1 compression.
. If you do not have internet access, refer to the User’s
DDS-2
120 meter
DDS-3
125 meter
DDS-4
150 meter
40 GB*
(C5718A)
DAT 72
170 meter
not supported
72 GB*
C8010A
table 2: data cartridge compatibility
Write-protecting cartridges
If you want to protect the data on a cartridge from being altered or overwritten, you can writeprotect the cartridge. (See figure 8.)
Always remove the cartridge from the tape drive before you change the write protection.
• To write-protect a cartridge, slide the tab on the rear of the cartridge so that the recognition
hole is open.
• To write-enable a cartridge, slide the tab back so that the hole is closed.
Write-protection will not protect your cartridges against magnets (or bulk erasers).
Cleaning cartridges
HP recommends weekly cleaning of the tape drive using an HP cleaning cartridge (part
number C5709A). Do not use swabs or other means of cleaning the heads. The cleaning
cartridge uses a special tape to clean the tape heads. A cleaning cartridge can only be used
50 times or as instructed on the cartridge packaging. Always place a check mark in a box
each time you use the cartridge to clean the drive. Replace the cleaning cartridge when all
the boxes are checked. New cleaning cartridges are available from HP.
1 Insert a cleaning cartridge into the drive. The tape drive automatically loads the cartridge and
cleans the heads.
21
At the end of the cleaning cycle, the drive ejects the cartridge. The cleaning cycle takes
approximately 30-60 seconds.
HP StorageWorks DAT 40 drives: If the cleaning cartridge ejects in less than 20 seconds, it
has probably expired. In this case, discard the cleaning cartridge and repeat the operation
with a new one.
HP StorageWorks DAT 72 drives: If the cleaning cartridge is not ejected, it has probably
expired. In this case, press the Eject button, discard the cleaning cartridge and repeat the
operation with a new one.
2 Remove the cleaning cartridge from the drive.
The drive's TapeAlert feature will send a message to your backup application when the tape
heads need cleaning or a cleaning cartridge has expired.
Handling cartridges
• Do not touch the tape media.
• Do not attempt to clean the tape path or tape guides inside the cartridge.
• Do not leave cartridges in excessively dry or humid conditions. Do not leave cartridges in
direct sunlight or in places where magnetic fields are present (for example, under
telephones, next to monitors or near transformers).
• Do not drop cartridges or handle them roughly.
• Do not stick more than one label onto the cartridge label area; extra labels can cause the
cartridges to jam in the drive. Stick labels onto the label area only.
• See the insert included with the tape cartridge for storage conditions.
Getting the most out of cartridges and drives
• Use mostly the matching media type (DAT 72 media for HP StorageWorks DAT 72, DDS-4
media for HP StorageWorks DAT 40).
• Use media for the recommended number of times (DAT 72 and DDS-4=100 full backups).
Overuse of the tape will cause it to degrade and possibly shed tape debris in the drive. Too
many new tapes can also cause wear of the drive as they are rougher than used ones.
• Do not verify (DDS does read-after-write checking automatically).
• Do not overload the server during backups. Maximize the transfer rate (run overnight with
no other processes) and use incremental backups if convenient.
• Do not overuse your tape drive—it is designed for approximately three hours of tape pulling
per day, not constant usage—and clean the drive regularly. See page 21.
• If you want to bulk erase cartridges, this should be done in a controlled environment. You
need to make sure there are no other cartridges with sensitive information on them anywhere
near the bulk eraser when in use. All data will be lost on cartridges that are bulk erased.
22
Register your tape drive
Once you have installed and tested your HP StorageWorks DAT tape drive, please take a few
minutes to register your product. You can register via the web (
To ensure your registration is complete, there are a number of questions on the electronic form
that are mandatory. Other questions are optional. However, the more you feel able to
complete, the better we can meet your needs.
Note HP and its subsidiaries are committed to respecting and protecting your privacy. For further
information, please visit our World Wide Web site (
Statement.
www.hp.com) and click on Privacy
www.register.hp.com).
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extraction lever
Figure 9a: pulling out the extraction lever
24
Figure 9b: removing the drive
Replacing the drive
HP StorageWorks DAT removable drives can be removed and replaced without powering
down the tape array. However you should be aware of the following:
• If all drives in the tape array are powered up when the system is turned on, the host will be
aware of those drives. You can remove any of those drives and replace it with another drive
as long as there is no activity on the bus.
• Do not remove or add drives to a bus that already has drives connected and running, for
example backing up or restoring data. Wait until there is no activity on the bus before
removing or adding drives.
• If a drive is not powered up or you place a drive in an empty slot after the system has been
powered up, the system will have to be reset before the host will recognize the drive.
• The SCSI IDs are controlled by the tape array, not by the drives themselves, so if you remove
a drive and replace it with another the ID will not change.
1 Pull the extraction lever of the drive that you want to replace so that it is in the out position.
(See figure 9a.)
2 Using the extraction lever, pull the drive gently and firmly out of the tape array. (See figure 9b.)
3 To insert another drive, follow the instructions in “Step 1: Install the drive” on page 13.
25
Figure 10a: hp obdr, step 1
Figure 10b: hp obdr, step 2
26
Figure 10c: hp obdr, step 3
Using HP OBDR
Compatibility
HP One-Button Disaster Recovery is a standard feature on all HP StorageWorks DAT tape
drives. However, it can only be used with specific configurations and will only recover the
server to which the tape drive is directly connected.
To check whether your system (hardware, operating system and backup software) is OBDRcompatible, please refer to our World Wide Web site
For more specific information concerning the benefits of OBDR and the latest new features
please refer to our World Wide Web site
www.hp.com/go/obdr.
Note HP OBDR is not applicable to HP-UX and other non-Intel UNIX operating systems, and it is not
compatible with Intel-based Solaris systems. HP OBDR is supported on a server with a RAID
controller if the tape drive is connected directly to a host bus adapter (HBA).
If your system does not support HP One-Button Disaster Recovery, you can still use your tape
drive normally to back up and restore data. However, you must remember to create a
separate set of emergency recovery disks for your operating system whenever you change
your system configuration.
What does HP OBDR do?
Using just the tape drive and the most recent backup cartridge HP OBDR allows you to
recover from the following types of system disaster:
• Hard disk failures, as long as the replacement hard disk is the same size or larger than the
original and uses the same interface (for example, replace a SCSI hard disk with another
SCSI disk)
• Hardware failures where the server is replaced by an identical component
• File corruption because of an operating system error
• File corruption because of an application software error
• Viruses that prevent you from booting your system correctly
• User errors that stop you from booting your system correctly
When you run HP One-Button Disaster Recovery, your tape drive goes through the following
sequence:
1 It goes into a special disaster recovery mode that enables it to restore your operating system
and reboot. It acts like a bootable CD-ROM. (Your system’s ability to boot from CD-ROM is
normally enabled by default. If you have changed this setting, you will need to enable it
again. Refer to your system BIOS manual for further details.)
2 It returns to normal tape drive mode and restores the data.
www.hp.com/go/connect.
Remote disaster recovery (ProLiant servers only)
The HP Remote Insight Lights-Out Edition (RILOE) on ProLiant servers gives the IT Administrator
the ability to completely recover a failed server at a remote location without physically
traveling to where the server resides. The on-site non-technical person need only insert the
bootable cartridge into the tape drive when asked to do so by the administrator.
Refer to the HP OBDR web site at
this feature and compatibility.
www.hp.com/go/obdr for more information about using
27
Testing for compatibility
We recommend that you perform a full disaster recovery immediately after installation—if
possible, onto a blank hard disk. If you do not have a blank hard disk and do not want to
overwrite your system, you can safely cancel the disaster recovery process at step 3 in the
following procedure.
Refer to our connectivity web site (
suitable backup applications.
www.hp.com/go/connect) for more information about
Running HP OBDR
HP OBDR can only be used with backup applications that support one-button disaster
recovery and methods of operating OBDR will vary between different software companies.
Check our World Wide Web site (
software compatibility, firmware upgrades and troubleshooting before you use HP OBDR.
1 Insert the latest bootable cartridge in the tape drive that you have assigned to HP OBDR (see
figure 10a). The cartridge must be written by a backup application that writes data to tape in
CD-ROM format.
2 Hold down the eject button of the tape drive that you have assigned to HP OBDR. Keeping the
eject button pressed down, power on your tape rack and server (see figure 10b.) This activates
the HP One-Button Disaster Recovery process. Release the button as soon as the Tape Light and
Clean light on the front panel flash alternately, which is the OBDR sequence.
Keyboard shortcut for HP ProLiant servers
www.hp.com/go/obdr) for the latest information about
There is no need to press the Eject button. Just power on your server and press the [F8]
function key during the Power On Self Test (POST). This invokes OBDR to restore your system.
For more information and specific instructions please refer to our World Wide Web site at
www.hp.com/go/obdr.
3 Follow the on-screen instructions to set up the operating system. (See figure 10c.) Normally,
you can accept the default response to all the prompts, for example just press <Enter>.
The LEDs will flash in OBDR mode (as described in step 2) while the tape drive restores your
operating system to a state where it can run a normal data restore.
4 Once the operating system has been set up and rebooted, the Ready LED display on the tape
drive changes to constant green and you can remove the backup cartridge, if you wish. You
are now ready to run a normal data restore. Follow the normal process for your restore
application.
If restore fails
If the restore fails for any reason, refer to our World Wide Web site (www.hp.com/go/
) and do a search on OBDR for detailed troubleshooting information.
obdr
28
Diagnostic tools
HP Library & Tape Tools
HP Library & Tape Tools does not work on all operating systems. Compatibility information,
updates, and the latest version of this software can be found at
HP Library & Tape Tools software provides free diagnostic and troubleshooting utilities. It
allows you to:
• Quickly identify, diagnose and troubleshoot drive and media problems.
• Verify that the drive is installed correctly and check drive health.
• Upgrade to the latest drive firmware (you will need internet connection to do this)
You can also install HP Library & Tape Tools from the link on the HP StorageWorks Tape
CD-ROM.
Note You may notice the internal identifier for the tape drive when you use HP Library & Tape Tools.
This is also the name that appears on the bootup screen for Windows users and is used to
identify the tape drive when configuring UNIX device files.
Drive model Internal Identifier
HP StorageWorks DAT 40 HP C5683A
HP StorageWorks DAT 72 HP C7438A
Performance Assessment Tool
www.hp.com/support.
Use our free Performance Assessment Toolkit, PAT, to check tape performance and test the
speed at which your disk sub-system can supply data.
PAT does not work on all operating systems. Compatibility information, updates and the latest
version of this software can be found at
www.hp.com/support/pat.
29
Optimizing performance
Various factors can affect tape drive performance, particularly in a network environment or if
the drive is not on a dedicated SCSI bus.
If your tape drive is not performing as well as expected, consider the following points before
contacting HP Support at
• Is the tape drive connected to a suitably-rated built-in SCSI bus or HBA, see “Why is the
SCSI bus type important?” on page 4. Suitably-rated means an Ultra Wide or higher SCSI
specification.
• Is the tape drive on a dedicated SCSI bus? For optimum performance, we recommend that
the tape drive is the only device on the SCSI bus. If it is not, ensure other devices are the
same SCSI specification as your tape drive model. If they are single-ended, the bus will
switch to single-ended mode with a lower transfer speed. There will also be restrictions on
cable length. Do not put tape drives and hard disks on the same SCSI bus.
• Is the SCSI bus terminated correctly. The last device on the SCSI bus must be terminated. Use
a multimode terminator.
• Is the cabling correct? Use properly-rated cables and adhere to maximum cabling length.
See the SCSI topic in the online User’s Guide on the HP StorageWorks Tape CD-ROM for
more information about cable length.
• Have you installed the correct device drivers for your operating system and backup
application? See “Backup software and drivers” on page 5.
• Are you backing up across a network? The network load may be affecting the speed of
transfer or your backup application may only be appropriate for a single-server
environment.
• Is the backup application writing buffers at the correct speed? You may need to tune the
transfer, buffer and block size settings to optimize the speed that the application writes data
to the tape drive. HP StorageWorks DAT tape drives have an internal buffer of 8 MB.
www.hp.com/support.
30
Troubleshooting
The first step in problem-solving is establishing whether the problem lies with the cartridge, the
drive, the host server and its connections, or with the way the system is being operated.
Most modern SCSI host bus adapters locate and display attached devices when the system is
booting up. On Windows systems, if you swap or connect a product when your system is
running, you will need to reboot the system. IA32 systems also usually need to be rebooted.
UNIX systems may have pluggable drivers, which allow drives to be attached to a running
system and detected without rebooting.
If the device is not detected on boot up, there is probably a problem with the physical
hardware: cables, termination, connections, power or the host bus adapter itself. If the device
is displayed during boot up but cannot be found in the operating system, this is more likely to
be a software problem.
• If you encounter a problem during installation and need further clarification, refer to
“Problems encountered during installation” below.
• If a problem arises during testing after you have installed the drive, refer to the symptombased section “Testing after installation” on page 33.
• For information about cartridges, refer to “Problems with cartridges” on page 36.
Many users can use HP Library & Tape Tools to help them diagnose problems.
Problems encountered during installation
Unpacking
Description Further information
Some parts appear to be missing or
damaged.
Contact your vendor if any parts need replacing.
Note that SCSI cables and terminators are not
shipped with your tape drive, or with the tape
array. You need to order the correct size cables
and terminators to suit your particular
configuration. Cable and terminator options are
listed at the HP tape array support web site:
//www.hp.com/support/tapearray.
It is unclear which SCSI ID to use
Description Further information
It is uncertain which ID numbers are
available.
Use HP Library & Tape Tools (see page 29) to provide
information on your current SCSI settings.
The HP StorageWorks DAT drive has its SCSI ID set to
3 by default. This should be left unchanged unless this
number is already in use. Full instructions on how to
change the SCSI ID are given on page 13.
How should the SCSI bus be configured?
Description Further information
Correct configuration of the SCSI bus with
multiple drives can be a complex area and
more help may be required.
Refer to the SCSI Configuration section in the online
HP StorageWorks User’s Guide on the
HP StorageWorks Tape CD-ROM.
31
How should the SCSI bus be terminated?
Description Further information
It is unclear if the bus is already terminated
or where an additional terminator should
be placed.
Refer to the SCSI Configuration section in the online
HP StorageWorks User’s Guide on the
HP StorageWorks Tape CD-ROM.
Both ends of a SCSI bus must be terminated.
Assuming that the host bus adapter is already
correctly terminated, there are typically two
possibilities:
• The tape drive is being connected in a direct one-toone configuration to the host server - termination
must be used.
• The tape drive is being daisy-chained with other
tape devices onto the host server - only the last
device must be terminated.
The terminator plugs directly onto either SCSI
connection on the rear of the tape array. Terminators
must be ordered separately.
Refer also to the “SCSI Configuration” section in
the online User’s Guide on the
HP StorageWorks Tape CD-ROM.
Is the correct SCSI host bus adapter installed?
Description Further information
The server already has a SCSI host bus
adapter but it is difficult to determine what
type it is.
The server may not have a SCSI host bus
adapter installed.
If your server is in its original configuration (no SCSI
adapters have been added or removed) then use
www.hp.com/go/connect to check the
compatibility of your system.
Use HP Library & Tape Tools (see page 29) to check
whether you have a SCSI host adapter on your system.
If not, you will need to purchase one. Refer to the
www.hp.com/go/connect web site.
32
Do drivers need to be installed and, if so, which ones
Description Further information
It is unclear whether there is a need to
install drivers onto the system, and more
help is required.
The required drivers do not appear to be
available.
Detailed information specific to your system can be
found on the www.hp.com/go/connect web site.
Typically, if you are using backup software that
states support for HP StorageWorks DAT tape
drives, then all the required drivers will be
provided.
HP StorageWorks Tape CD-ROM or from
www.hp.com/support. For support on UNIX
systems, see the UNIX Configuration Guide on the
HP StorageWorks Tape CD-ROM.
Future drivers will be provided via the support web site
when they become available.
Windows drivers can be obtained from the
Testing after installation
Remember that the system recognizes devices during boot-up. If you swap or connect a
product when your system is running, you will need to reboot the system. Rebooting the system
will reset devices and will often resolve problems. It is good practice to reboot every time you
add a driver or install firmware.
Caution Never power off the drive during a firmware upgrade.
The server does not recognize the tape drive when it boots up
Possible reason Recommended action
The power or SCSI cable is not connected
properly.
The SCSI bus is not terminated correctly. Check that the SCSI bus is actively terminated. (Refer
The tape drive’s SCSI ID address is not
unique.
Check that the cables to the tape array are firmly
connected. Ensure that the SCSI cable is LVDScompliant and does not have any bent pins.
Replace, if necessary.
also to the documentation for your SCSI controller
and any other SCSI devices you may have.)
Make sure that each device on the SCSI bus has a
unique ID. Remember that 7 is normally reserved for
the host bus adapter. (Users of most operating
systems can run HP Library & Tape Tools to check the
SCSI IDs of each device attached to the SCSI bus,
page 29.)
see
The drive does not work
Possible reason Recommended action
The drive is not receiving power from the
tape array.
There is a fault with the drive. If possible, and if no other drives in the tape array
There is a hard error on the drive. The Media Caution (Clean) LED shows steady
Check that the tape array is connected to a power
source and switched on.
Check that the drive is properly inserted into the
tape array so that it mates with the connections at
the rear of the enclosure. The extraction lever should
be pushed in, locking the drive in position.
If the drive READY light is still off, call for assistance.
are in use, try resetting the drive, or turning the
power switch on the tape array off and then on
again. (If there is a tape cartridge loaded in the
drive, try to unload it by pressing the Eject button. If
this succeeds, switch the tape array off and then on
again.
If the problem persists, call for assistance.
amber. Try powering the system off and then on
again. If the error condition signal still shows, call
for service.
33
The server no longer recognizes the tape drive
Possible reason Recommended action
You powered up the drive or added it to the
tape array after the host system was turned
on.
You changed the drive’s SCSI ID after the
host system was turned on.
The drive is not inserted correctly. Check that the drive is properly inserted into the
The SCSI bus is not terminated correctly. • Check that the SCSI cable from the tape array is
There is a fault with the host system. • Make sure that the system is configured to
The host computer system only identifies which IDs
are present on SCSI buses after power-on or a
reset. To make the host look for devices on the bus,
you need to reset the host. You should be able to
do this using the SCSI management software on
your computer. As a last resort, you could turn the
host system off and on again
• If you have replaced a drive that was recognized
by the host, the host should recognize the new
drive at the same SCSI ID as its predecessor.
• If you make any changes to SCSI IDs (on the back
on the tape array), you need to reset the bus for
the host to recognize the changes.
tape array so that it mates with the connections at
the rear of the enclosure. The extraction lever
should be pushed in, locking the drive in position.
firmly connected to the SCSI connector in the
computer.
• If there are other devices in the SCSI bus, make
sure that each device has a unique ID. Use HP
Library & Tape Tools to find details of the devices
on the bus.
• If there is more than one SCSI bus attached to
your system, check that the system is looking for
the drive on the correct SCSI bus.
• Make sure that the bus is terminated correctly. If
the array is the only device or the last device on
the bus, it must have a terminator fitted. If some
other device is last on the bus, it should have a
terminator fitted and the tape array should not.
recognize the correct device at each SCSI ID.
• Ensure that the correct driver for the tape drive is
installed. Look at the SCSI host adapter
documentation and backup software
documentation for further advice.
34
The application does not recognize the tape drive
Possible reason Recommended action
The application does not support the tape
drive.
Some applications require drivers to be
loaded.
Use HP Library & Tape Tools to check that the drive
is installed properly. Refer to our World Wide Web
site (www.hp.com/go/connect) for details of
backup applications that support the
HP StorageWorks DAT tape drive. Load any service
packs as necessary.
Check that the correct SCSI and tape drive drivers
are installed. Consult the backup application’s
installation notes for details.
35
Problems with cartridges
If you experience any problems using HP branded cartridges, check:
• The cartridge case is intact and that it contains no splits, cracks or damage.
• The cartridge has been stored at the correct temperature and humidity. This prevents
condensation. See the insert included with the tape cartridge for storage conditions.
• The write-protect switch is fully operational. It should move from side to side with a positive
click.
• The World Wide Web site for more detailed troubleshooting information:
support
.
The cartridge is jammed
If the cartridge is jammed or the backup application is unable to eject it, you can force eject
the cartridge. Once the cartridge is successfully ejected, it is good practise to upgrade the
firmware. If the failure occurs regularly, contact customer service at
support
1 Either press and hold the Eject button on the front of the tape drive for at least 15 seconds.
Or press the Eject button three times within 5 minutes.
2 Wait for the cartridge to be ejected. The drive waits until 35 seconds have passed from the
time of the first press, to give the normal eject procedure a chance to proceed. After this period,
it immediately releases the tape and ejects the cartridge, regardless of what operation it was
performing. It is important that you allow sufficient time for the drive to complete this process.
If you interrupt it, you may damage the media or the tape drive.
The drive is then reset as though you had turned the power off and then on again.
.
www.hp.com/
www.hp.com/
3 You may lose data if you force eject a cartridge. The tape may also become unreadable
because an EOD (End of Data) mark may not be properly written.
If the cartridge is still jammed, the tape drive has failed. Contact customer service at
www.hp.com/support.
The drive will not accept the cartridge (or ejects it immediately)
The cartridge may have been damaged, for example dropped, or the drive may have a fault.
If it is a cleaning cartridge, it has probably expired and should be discarded immediately. For
data cartridges:
1 Check that the drive has power (the power cable is properly connected and the ready LED is
on).
2 Check that you are using the correct media for the tape drive, see page 21.
3 Make sure that you have loaded the cartridge with the correct orientation (see “To load a
cartridge” on page 17).
36
4 Check for damage to your media and discard it if it is damaged.
5 Use a new or known, good piece of media and see if it loads. If it does, the original cartridge
is faulty and should be discarded.
6 Check if another DAT drive of the same model will accept the cartridge. If it does, the original
drive may be faulty. Before calling customer service, please check that the tape drive is
responding and that it can be seen on the SCSI bus. Use HP Library & Tape Tools, see page 29.
37
Other sources of information
You will also find troubleshooting information and contact details on the
HP StorageWorks Tape CD-ROM and the HP web site. In particular:
• The online User’s Guide on the HP StorageWorks Tape CD-ROM contains an extensive
troubleshooting topic.
• The HP support web site contains a link to
to HP’s Customer Care web site for a wide range of up-to-date information about your
product.
• The HP web site at
products and configurations.
• The HP web site at
HP One-Button Disaster Recovery.
How to contact HP
You can also use the HP Customer Call Centers for specialist technical help. Contact details
can be found at
To make the best use of this service, we ask that you work with our Support Specialists to
resolve any issues with your drive. This may include downloading diagnostic software, that
will assist in the rapid resolution of your problems.
www.hp.com/go/connect provides details of recommended
www.hp.com/go/obdr provides detailed information about
www.hp.com. Click on the link to “contact HP”.
www.hp.com/support/dat that takes you
38
http://www.hp.com/go/storagemedia
http://www.hp.com/support/dat
Printed in the UK
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