NEC N8100-958F, User Manual

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General Description 2-17
SAF-TE LOGIC
NOTE: SAF-TE Logic is in systems that include the hot-swap SCSI
disk drive cage. SAF-TE Logic is not available in systems that
include the standard SCSI disk drive cage.
The SCSI backplane includes SAF-TE (SCSI Accessed Fault Tolerant Enclosure) logic that provides
an interface to the disk subsystem that supports status signals, hot swapping drives, and enclosure
monitoring.
The transport mechanism for the standardized alert detection and status reporting is the SCSI bus.
Disk drives, power supplies, cooling fans, and temperature are continually monitored and the
conditions then reported over the SCSI bus to the system. When used with RAID management
software the user can be alerted of impending or imminent disk conditions requiring attention.
This allows the user to react to conditions that could normally go unnoticed until data loss.
SYSTEM BOARD FEATURES
The following subsections describe the system board major components.
Processor
The system board accommodates one or two Intel Xeon processors with 1MB cache in the
INT3/FCPGA socket package. This processor uses the .13 micron technology and offers advanced
performance. The processor external interface operates at a maximum of 800 MHz.
Memory
The system board contains six 168-pin DIMM slots each supporting 72-bit ECC (64-bit main
memory plus ECC) registered SDRAM DIMMs (DDR333 compatible). Memory is two-way
interleaved and partitioned in three banks. You may install a minimum of 1 GB (512 MB × 2) and as
much as 12 GB.
The controller automatically detects, sizes, and initializes the memory array, depending on the type,
size, and speed of the installed DIMMs, and reports memory size and allocation to the server via
configuration registers.
NOTE:
Use DIMMs that have been tested for compatibility with the
server board.
Contact your sales representative or dealer for a current list of approved
memory modules.