Drive Connectivity - Spectra Logic Spectra T950V User Manual

Chapter 2 — Architecture Overview
Dual-Port Connectivity As an alternative to the configurations that use a
single port for each partition, dual‐port configurations use both interface
ports as a single communications path to the same partition. The ports can
be connected to the same or different SANs. The hosts on the network can
use either port to communicate with the robotics. A dual‐port
configuration allows a host to have an alternate, redundant, path to reach
the partition. Not all host software can support this type of configuration.

Drive Connectivity

The drives in the library have either a Fibre Channel or a SAS interface.
 Fibre Channel drives connect directly to the host using a Fibre Channel
 Serial Attached SCSI (SAS) drives connect directly to a SAS HBA.
Keep in mind that all of the drives on an arbitrated loop must share the
data transfer capacity (bandwidth) of the interface. Having multiple
devices on the same loop can negatively impact the performance of all the
devices.
August 2019
 The two ports cannot be used simultaneously.
Notes:
 This type of configuration cannot be used in combination
with the Controller Failover feature (see Controller Failover
on page 67).
SAN
Dual-path connection to the same SAN
SAN1
SAN2
Dual-port connection to different SANs
Figure 23 Examples of a dual-path and dual-port
configurations.
arbitrated loop or fabric, as described in World Wide Names for Fibre
Channel Drives.
Fibre Channel Connectivity
A
Controller
B
—OR—
A
Controller
B
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