HP StoreEver MSL4048 Tape Library Getting Started (AK380-96016, December 2012)

6a 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: See “14 Configuring the FC ports”
(page 12) for additional FC configuration
information. See the user and service guide for
instructions on changing the FC configuration.
6b Planning the SAS configuration
The server must have a SAS HBA with an external
connector.
WARNING! Only HP SAS RAID controllers
are supported for use with the library. For
supported controllers, see the EBS compatibility
matrix:
http://www.hp.com/go/ebs
CAUTION: High quality SAS cables rated at
the transfer rate of the SAS components are
required. Always verify that the SAS cable you
are using is rated for the data transfer speed of
the interface of your components. SAS cables
described as "equalized" may not support 6
Gb/s data rates and should not be used with
LTO-5 or LTO-6 tape drives unless these cables
are verified for 6 Gb/s data rates.
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