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Chapter 4 Features
31
Hardware Architecture Features
The ADAC Ultra2 S466 hardware architecture features
include:
Specification Feature
Processor Intel i960RP3V 33
SCSI Controller Symbios Logic 53C895
Size of Flash ROM 1 MB
Amount of NVRAM 32 KB
Hardware XOR assistance No
Direct I/O Yes
Removable cache memory module Yes
SCSI bus termination Active, single-ended or LVD
Double-sided SIMMs Yes
Auxiliary TermPWR source No
Direct I/O bandwidth 132 MB/s
Array Performance Features
The ADAC Ultra2 S466 array performance features
include:
Specification Feature
Host data transfer rate 132 MB/s
Drive data transfer rate 80 MB/s
Maximum Scatter/Gathers 26 elements
Maximum size of I/O requests 6.4 MB in 64 KB stripes
Maximum Queue Tags per drive 211
Stripe Sizes 2 KB, 4 KB, 8 KB, 16 KB, 32 KB, 64
KB, or 128 KB
Maximum number of concurrent
commands
255