Adaptec GDT8546RZ User Guide - Page 116

Intelligent Fault Bus, 5.1.4, Non-Intelligent Enclosures

Page 116 highlights

ICP RAID Console During boot up, the system displays the updated firmware version. You can also relaunch ICPCON and select the applicable ICP RAID controller to view its new firmware version at the bottom of the console (for example, FW:2.32.00-Rxxx). 10.5.1.3 Intelligent Fault Bus To access this menu option, from the Advanced Setup menu, select the Configure Controller option and press Enter to display the Configure Controller menu, then select the Intelligent Fault Bus option and press Enter. Intelligent fault bus is a standard for enclosure management that was popular with SE (Single Ended) SCSI but is no longer supported with current LVDS (Low Voltage Differential Signaling) SCSI or SATA enclosures. So this option is no longer available. Today's modern subsystems are using SCSI Accessed Fault-Tolerant Enclosures (SAFTE) as communication links to the controller. These intelligent subsystems are normally built on so-called backplanes, which host hard disks equipped with Single Connector Attachment (SCA) connectors. The backplane has dedicated electronics with microprocessor and firmware which allows intelligent communication between the subsystem/backplane and the ICP RAID controller. Through this channel the subsystem can report its temperature and the power supply status to the ICP RAID controller. The major objective of SAF-TE is auto hot plug. In contrast to hot plug, auto hot plug allows a defective drive to be simply removed from the subsystem and the replacement unit installed in its place. Both the ICP RAID controller and the subsystem control this process so that problems on the SCSI bus are eliminated and the rebuilding of the missing data is initiated automatically. No further user interaction is necessary. 10.5.1.4 Non-Intelligent Enclosures To access this menu option, from the Advanced Setup menu, select the Configure Controller option and press Enter to display the Configure Controller menu, then select the Non-Intelligent Enclosures option and press Enter to display the Select Enclosure screen (Figure 10-61). Since SAF-TE subsystems are expensive, the ICP RAID controller integrates functionality which allows for the control of up to 16 non-intelligent enclosures with up to 15 hard disks each, and provides for auto hot plug. In the example in Figure 10-61, one subsystem is defined. The hard disks with their disk shuttles could also be mounted directly into the server enclosure. The term enclosure in this case is a definition set, which includes all hard disks which should be auto hot pluggable. 116 Software Installation and User's Guide

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116
Software Installation and User’s Guide
ICP RAID Console
During boot up, the system displays the updated firmware version. You can also relaunch
ICPCON and select the applicable ICP RAID controller to view its new firmware version
at the bottom of the console (for example, FW:2.32.00-Rxxx).
10.5.1.3
Intelligent Fault Bus
To access this menu option, from the Advanced Setup menu, select the
Configure
Controller
option and press Enter to display the Configure Controller menu, then select
the
Intelligent Fault Bus
option and press Enter.
Intelligent fault bus is a standard for enclosure management that was popular with SE
(Single Ended) SCSI but is no longer supported with current LVDS (Low Voltage
Differential Signaling) SCSI or SATA enclosures. So this option is no longer available.
Today’s modern subsystems are using SCSI Accessed Fault-Tolerant Enclosures (SAF-
TE) as communication links to the controller. These intelligent subsystems are normally
built on so-called backplanes, which host hard disks equipped with Single Connector
Attachment (SCA) connectors. The backplane has dedicated electronics with
microprocessor and firmware which allows intelligent communication between the
subsystem/backplane and the ICP RAID controller. Through this channel the subsystem
can report its temperature and the power supply status to the ICP RAID controller. The
major objective of SAF-TE is
auto hot plug
. In contrast to
hot plug
, auto hot plug allows a
defective drive to be simply removed from the subsystem and the replacement unit
installed in its place. Both the ICP RAID controller and the subsystem control this process
so that problems on the SCSI bus are eliminated and the rebuilding of the missing data is
initiated automatically. No further user interaction is necessary.
10.5.1.4
Non-Intelligent Enclosures
To access this menu option, from the Advanced Setup menu, select the
Configure
Controller
option and press Enter to display the Configure Controller menu, then select
the
Non-Intelligent Enclosures
option and press Enter to display the Select Enclosure
screen (
Figure 10-61
).
Since SAF-TE subsystems are expensive, the ICP RAID controller integrates
functionality which allows for the control of up to 16 non-intelligent enclosures with up to
15 hard disks each, and provides for auto hot plug.
In the example in
Figure 10-61
, one subsystem is defined. The hard disks with their disk
shuttles could also be mounted directly into the server enclosure. The term
enclosure
in
this case is a definition set, which includes all hard disks which should be auto hot
pluggable.