DO821輸出模塊
主機箱內係統版，軟盤，硬盤驅動及各種適配器擴展卡等係統部件使用。通俗來講就是，一個電源壞了，另一個備份電源代替其供電。可以通過為節點和磁盤提供電池後援來增強硬件的可用性。
HP 支持的不間斷電源（UPS），如 HP PowerTrust，可提防瞬間掉電。磁盤與供電電路的連接方式應使鏡像副本分別連接到不同的電源上。根磁盤與其相應的節點應由同一電源電路供電。特別是，群集鎖磁盤（當重組群集時用作仲裁器）應該有冗餘電源，或者，它能由群集中節點之外的電源供電。
DO821輸出模塊
電源測試中比較重要的有哪些項目？
答：主要有交叉負載，浪涌，輸入電壓，紋波噪音，輸出短路，過功率，轉換效率，功率因數，響應時間，時序，噪音，傳導輻射，漏電流，高低溫測試等。
NFAI143-S50橫河模塊
D1810輸入模塊
DO821輸出模塊
RYS152S3-VSS-Fuji Servo Driver ( 1200 )
RYS201S3-VVS-Fuji Servo Driver
RYS401S3-RPS-Fuji Servo Driver ( 600 )
RYS401S3-VVS-Fuji Servo Driver ( 600 )
RYT751D5-VS2-Fuji Servo Driver
S3016-Futaba Servo Motor
SFC-020DA2-Miki Pully Couplings
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SGDA-01AP-Yaskawa Servo Driver
SGDA-01BS-Yaskawa Servo Driver ( 670 )
SGDA-02AP-Yaskawa Servo Driver
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SGDB-10VD-P-Yaskawa AC Servo Pack (850 )
SGDE-02AP-Yaskwa Servo Driver
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SGDH-08AE-Yaskawa Servo Driver ( 700 )
SGDH-10AE-Yaskawa Servo Driver
SGDJ-02AS-Yaskawa Servo Driver ( 600 )
SGDM-08ADA-Yaskawa Servo Driver ( 1400 )
SGDS-04A12A-Yaskawa Servo Driver
SGDS-08A12A-Yaskawa Servo Driver ( 600 )
SGDS-A5A12A-Yaskawa Servo Driver ( 650 )
SGM-01A312C-Yaskawa Servo Motor
SGM-04A314P-Yaskawa Servo Motor
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UDK5114N-Oriental / Vexta Stepper Driver
UDK5128NW2-Oriental / Vexta Stepping Driver
UDX5128N-Oriental Stepper Driver
VLBST-Z04030-U-Toei Servo Motor ( 600 )
VPA744-04A-Air Operated Valve
VT2-7SB-Keyence Operator Interface Touch Screen ( 570 )
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