User's Guide

Chapter 3 Configuring Your Library
Setting Tape Drive Parameters
Scalar i500 User’s Guide 85
• Auto (NL) — Auto-configure trying N-Port first (default)
• The requested interface speed can be set to Auto (default), 1 Gb/s,
2 Gb/s, 4 Gb/s, or 8 Gb/s (depending on drive type).
• If the requested FC topology and speed settings are not supported,
the next appropriate settings are negotiated. On the Web client, the
Drive Settings screen displays both the requested and the actual FC
topology connection mode and interface speed. If FC drives are not
connected to the host, the negotiated actual settings appear on the
screen as “unknown.”
Notes About Point to Point:
- You can use Point to Point if the tape drive is connected
via a switch.
- You can use Point to Point with HP drives if the tape
drive is connected to a host.
- You cannot use Point to Point if the tape drive is
connected directly to a host.
- You cannot use Point to Point if the tape drive is
connected to an FC I/O blade.
- You must use Point to Point if the tape drive is being
used for control path failover (see Configuring Control
Path Failover on page 150) or data path failover (see
C
onfiguring Data Path Failover on page 154). If a tape
drive is being used for control path failover or data path
failover, you cannot change its topology from Point to
Point to anything else.
Caution: LTO-5 Fibre Channel tape drives can be configured for
speeds of up to 8 Gb/s. If they are configured for
8 Gb/s, you should connect them directly to a host
and not to an FC I/O blade, because the FC I/O blade
only allows speeds up to 4 Gb/s. If you connect an
LTO-5 Fibre Channel tape drive to an FC I/O blade,
you must configure the tape drive speed to 4 Gb/s or
less.
Note: On the Web client, the
Drive Settings screen displays tape
drive information in tables. Bold column headings in the tables
can be sorted. For example, selecting the
Location column
heading will sort by location coordinates.