Acer altos s300
1 Introduction
8
Terminating Services Module
The Terminating Services Module (TSM) has no external connectors and
as such cannot have cables connected to it. Instead it can either
terminate or join the SCSI busses based on the cable configuration on
the ESM. The TSM reports status and receives control information via
the SCSI bus per the SCSI-3 Enclosure Services specification and also the
SAF-TE specification.
as such cannot have cables connected to it. Instead it can either
terminate or join the SCSI busses based on the cable configuration on
the ESM. The TSM reports status and receives control information via
the SCSI bus per the SCSI-3 Enclosure Services specification and also the
SAF-TE specification.
Concentrator Services Module
The Concentrator Services Module (CSM) includes the same
functionality as the ESM, in addition to giving the enclosure Clustering
capabilities. With a CSM installed in one I/O Slot and either a CSM or a
TSM installed in the second I/O slot then a Cluster Configuration is
possible.
functionality as the ESM, in addition to giving the enclosure Clustering
capabilities. With a CSM installed in one I/O Slot and either a CSM or a
TSM installed in the second I/O slot then a Cluster Configuration is
possible.
This means that each external SCSI connector can have 25 meters of
SCSI cable attached, with each cable connected from the I/O module to
a host. When a host is disconnected from the enclosure, the CSM
isolates the disconnected host from the internal storage and remaining
attached host. This means that one host can be taken “off-line”
without data disruption to the other host.
SCSI cable attached, with each cable connected from the I/O module to
a host. When a host is disconnected from the enclosure, the CSM
isolates the disconnected host from the internal storage and remaining
attached host. This means that one host can be taken “off-line”
without data disruption to the other host.
Note: For information on how to configure your Altos S300
series, see page 17.
series, see page 17.