HP StoreEver MSL2024 Tape Library Getting Started (AK378-96060, December 2012)

Optional: Adding a tape drive
With a tape drive upgrade kit, the library can hold
up to two half-height Ultrium tape drives.
Remove the drive bay cover. Position the tape drive
on the alignment rails, then slowly slide it into the bay
until it is firmly seated. Tighten the blue thumbscrews
with your fingers until the tape drive is secure.
NOTE: The tape drives are numbered from
the bottom up. If your library did not come with
a tape drive, install the first tape drive in the
bottom drive bay.
5a Planning the parallel SCSI configuration
If you are unfamiliar with configuring parallel SCSI
devices, read the parallel SCSI configuration
information in the user and service guide.
Follow these general guidelines when planning the
parallel SCSI configuration:
• The tape drives are Ultra320 parallel SCSI
devices. Only attach one tape drive per Ultra320
bus. Attaching a tape drive on a lower
performance bus may degrade its performance.
Do not connect an LTO tape drive to an SE SCSI
bus because it will seriously degrade
performance.
• Avoid attaching the library to the same SCSI bus
as a disk drive or SE device.
• The default SCSI ID of the bottom half-height or
full-height tape drive is 4. The default SCSI ID of
the top half-height tape drive is 5.
5b Planning the FC configuration
On tape drives with two FC ports, HP recommends
that only one port be connected unless your application
supports path failover or you have configured library
managed path failover.
Direct connection You will need a 4 Gb or 8 Gb FC
HBA. A 4 Gb HBA is recommended for LTO-4 tape
drives for optimum performance. An 8 Gb HBA is
recommended for LTO-5 and LTO-6 tape drives for
optimum performance.
SAN connection All switches between the host and the
library must be of the appropriate type. For example,
a 2 Gb switch in the path may result in performance
degradation when backing up highly compressible
data to a 4 Gb tape drive.
Configure zoning on the Fibre switch so only the
backup servers can access the library.
You must provide a Fibre Channel cable for each tape
drive. The maximum cable length (in meters) is based
on the tape drive and external cable type, as shown:
8 Gb4 Gb2 Gb
Cable
typeDrive
0.5 – 50 m0.5 – 150 m0.5 - 300 mOM2All
0.5 – 50 m0.5 – 150 m0.5 – 300 mOM3,
OM4
LTO-5 HH*
0.5 – 150 m0.5 – 380 m0.5 – 500 mOM3,
OM4
All except
LTO-5 HH
* The LTO-5 Ultrium 3000 half-height drive is shown as LTO-5
HH.
NOTE: For additional FC configuration
information, see “13 Configuring the FC ports”
(page 10). See the User and Service Guide for
instructions on changing the FC configuration.
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