Chaparral G5312/G7313 ユーザーズマニュアル

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 Introduction
1-5
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Supports full backward compatibility for asynchronous, fast, Ultra 1 
(40 MB/sec), and Ultra2 SCSI (80 MB/sec)
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Onboard Ultra2 SCSI terminators supporting auto-detection and auto-
configuration for LVD/SE
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Onboard termination power source circuit breakers
Note: 
There is no support for high-voltage differential (HVD) SCSI (RS-
485 SCSI-3 compliant).
Motherboard Disk Cache (K-Series)
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Adaptec AIC-2100 dual-port PCI disk cache ECC memory controller
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PCI-to-PCI Bridge providing full CPU and PCI bus concurrency
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Disk cache size modularity using standard SDRAM 168-pin ECC DIMM 
(16 MB to 128 MB)
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Battery backup switching regulator and control interface for controller cache 
memory
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Onboard battery charger and intelligent control/monitoring interface
Integrated Battery Backup and Interface (K-Series)
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Battery charger and battery control interface
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Integrated software controlled battery charger, diagnostics, and periodic battery 
monitoring
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Nickel Metal Hydride (NiMH) battery pack delivery of greater than 72 hours 
continuous backup to controller cache memory
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Software-controlled battery charger and diagnostics