1-6 Sun StorEdge 3000 Family Installation, Operation, and Service Manual • May 2004
In the unlikely event of an I/O Controller Module failure, the redundant RAID
controller immediately begins servicing all I/O requests. The failure does not affect
application programs.
Each RAID I/O controller module can support up to 1 gigabyte of Synchronous
Dynamic Random Access Memory (SDRAM) with Error Control Check (ECC)
memory. In addition, each controller supports 64 megabytes (Mbyte) of on-board
memory. Two Application Specific Integrated Circuit (ASIC) controller chips handle
the interconnection between the controller bus, DRAM memory, and Peripheral
Component Interconnect (PCI) internal buses. They also handle the interface
between the on-board 2 Mbyte flash, 32 Kbyte nonvolatile random access memory
(NVRAM) RS-232 port chip, and 10/100 BASE-T Ethernet chip.
The RAID I/O controller module is a multifunction board. I/O controller modules
include Small Form-Factor Pluggable (SFP) ports, the SES logic, and the RAID
controller. The SES logic monitors various temperature thresholds, fan speed from
each fan, voltage status from each power supply, and the FRU ID.
Each RAID I/O controller module incorporates SES direct-attached Fibre Channel
capability to monitor and maintain enclosure environmental information. The SES
controller chip monitors all internal +12 and +5 voltages, various temperature
sensors located throughout the chassis, and each fan. The SES also controls the front
and back panel LEDs and the audible alarm. Both the RAID chassis and the
expansion chassis support dual SES failover capabilities for fully redundant event
monitoring.
1.2.2 I/O Expansion Modules
The hot-serviceable I/O expansion modules provide four (Sun StorEdge 3510 FC
array) or eight (Sun StorEdge 3511 FC array) SFP ports but do not have battery
modules or controllers. I/O expansion modules are used with I/O Controller
Modules in non-redundant Sun StorEdge 3510 and 3511 FC arrays, and in expansion
units and JBODs.
1.2.3 Disk Drives
Each disk drive is mounted in its own sled assembly. Each sled assembly has EMI
shielding, an insertion and locking mechanism, and a compression spring for
maximum shock and vibration protection.
To Next Page
Loading...
Need help?
General
