Chapter 3 Configuring Your Library
Setting Tape Drive Parameters
Scalar i500 User’s Guide
77
For FC tape drives:
• The loop ID can be set to a value from 0 to 125. A unique loop ID is
selected by default for all FC tape drives installed in the library. For
example, the tape drive installed in the top drive bay of a control
module is assigned a default loop ID of 61. The tape drive installed in
the control module’s bottom drive bay is assigned a default loop ID
of 63.
If you change the default loop IDs, make sure each FC tape drive with
a topology setting of Auto (LN), Loop (L), or Auto (NL) has a unique
loop ID.
• The requested topology connection mode can be set to one of the
following:
• Auto (LN) — Auto-configure trying L-Port first
• Loop (L) — Force L-Port
• Point to Point — Force N-Port
• 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, and 4 Gb/s. When you set the speed to 4 Gb/s using the web
client, a caution message appears informing you that the 4 Gb/s
speed selection may not be applicable to all FC tape drives installed
in the library. Acknowledge the message by clicking
OK
.
• 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.”
The paths to open the appropriate screens are as follows:
• From the web client, select
Setup > Drive Settings
.
• From the operator panel, select
Setup > Drive Settings
.
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.