參數(shù)資料
型號(hào): SYM53C180
廠商: LSI Corporation
英文描述: Ultra3 SCSI Bus Expander(Ultra2 SCSI總線擴(kuò)展器)
中文描述: 個(gè)Ultra3 SCSI總線擴(kuò)展(Ultra2的SCSI總線擴(kuò)展器)
文件頁(yè)數(shù): 13/78頁(yè)
文件大小: 1073K
代理商: SYM53C180
General Description
1-3
1.1.1 Applications
Server clustering environments
Expanders creating distinct SCSI cable segments that are isolated
from each other
Figure 1.2
SYM53C180 Server Clustering
Figure 1.2 demonstrates how SCSI bus expanders are used to couple
bus segments together without any impact on the SCSI protocol or
software. Configurations that use the SYM53C180 SCSI Bus Expander
in the Ultra3 mode (LVD to LVD) allow the system designer to take
advantage of the inherent cable distance, device connectivity, data
reliability, and increased transfer rate benefits of LVD signaling with
Ultra3 SCSI peripherals.
In the Figure 1.2 example, two SYM53C180 expanders are used to
configure three segments. This configuration allows segment A to be
treated as a point-to-point segment. Segments B and C are treated as a
load segments with at least 8 inches between every node. Table 1.2
shows the various distance requirements for each SCSI bus mode.
Segment A
Segment B
Segment C
Primary Server
Secondary Server
Shared Disk Subsystem
SCSI Bus
Expander
SCSI Bus
Expander
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