HP Tc4100 hp mc/serviceguard for Linux configuration guide for HP Netservers - Page 15

HP IA-32 Server LT6000r PIIIX-900 2M M1 U3 - U.S. - English localization P1821B ABA 1 HP PIII Xeon 900 2MB CPU Upgrade for LH6000 LT6000 P3455A 3 HP 1GB 133MHz ECC SDRAM DIMM D8268A 2 HP 10/100 IPSec 3-DES LAN Adapter P3492A 2 HP 36.4GB 15K Ultra3 SCSI HS LP HDD D9422A 4 HP 128MB unbuffered SDRAM DIMM D7156A 1 HP Ultra3 SCSI Adapter P3413A 2 Quorum Server - not connected to shared storage HP IA-32 Server LP2000r PIII-1.26 512k M1 - U.S. - English localization HP 18.2GB 10K Ultra3 Wide SCSI HS LP HD HP LP2000r Redundant Power Supply- U.S. - English localization P4638A ABA 1 P2473A 2 P2498A ABA 1 HP IA-32 Server R/S 12 - U.S. - English localization HP Rack Storage 12 SCSI Card C HP 36.4GB 15K Ultra3 SCSI HS LP HDD HP SCSI Cable, 2.5m D5989C ABA 2 D6025C 2 D9422A 12 D3636C 4 Rack Components HP Rack System/E41 with rear door & foot J1500B 1 HP Side Panel Kit for HP Rack System/E41 J1506A 1 Retractable Keyboard Kit J1518A 1 Universal Monitor Rackmount Kit J1519B 1 HP Cable Guide E7723B 1 Power cord with L6-20P -C20 connector E7805A 3 HP Mouse C3751B 1 HP Windows keyboard - U.S. - English localization C4735B 1 HP 55 15" Color Monitor 13.7" V.I. - U.S. - English localization D8896A 1 HP 19" 16A PDU w/6 C13 & 2 C19 outlet E7671A 1 PDU Bundle (E7671A, E7670A, E7742A E7672A 2 HP Rackmount Console Switch, 1x8 J1474A 1 HP Console Switch Cable,8 ft J1476B 3 HP Filler Panels for HP Rack System J1514A 2 Power Distribution To ensure high availability, it is recommended that the power source be configured in a way such that there should not be power loss to 50% or more of nodes in the cluster, including the quorum server. Implementing the recommended power configuration will improve the availability of the cluster. In many cases failure of a server or storage component can be prevented due to loss of AC power. This prevents Package Failover and restart or storage re-mirroring. This section can also be used as a guideline in case the recommendations cannot be followed. Local Regulations • Local codes and regulations that relate to power must be followed, even if they differ from these recommendations. Redundant Power Supplies • Most servers and storage equipment have optional redundant power supplies. These should be used and configured as described below. Site power circuits • It is recommended that the cluster use two or three power circuits. This will prevent loss of one circuit from impacting more than 50% of the nodes of the cluster.