Chapter 5. Configuration tools and rules 133only one or two processor books and more I/O drawers than can beconfigured in the primary system frame should carefully consider their futuresystem growth requirements to determine which Expansion Rackcombination to purchase. The number of Bulk Power Regulators (FC 6186) and Bulk Power DistributionAssemblies (FC 7837) varies, depending on the number of processor booksand I/O drawers and battery backup features (p5-595 only) installed in thep5-590 or p5-595 server. For detail the number of BPRs and BPDs requiredfor different combination, refer to p5-590 and p5-595 Sales Manual.Battery backupAn optional Integrated Battery Backup is available, if desired. The battery backupfeatures are designed to protect against power line disturbances and providesufficient power to allow an orderly system shutdown in the event that the powersources fail. The battery backup features each require 2U of space in the primarysystem frame or in the Expansion Rack (FC 8691). The Integrated Battery Backup, Primary or Redundant-Front Mounted (FC6200) is used to back up the front-mounted power subsystem. It interfaces tothe power regulators with the FC 6240 cable. If battery backup is desired, onebattery backup (FC 6200) should be ordered for each power regulator in thefront power subsystem. The Integrated Battery Backup, Redundant Rear Mounted (FC 6201) is usedfor the rear-mounted power subsystem if redundancy is desired. It interfacesto the power regulators using the FC 6240 cable. If redundant battery backupis desired, one FC 6201 should be ordered for each power regulator in therear power subsystem. The Integrated Battery Backup, Primary or Redundant-Front Mounted (FC6200) is a prerequisite to ordering the Integrated Battery Backup, RedundantRear Mounted (FC 6201). If additional external communication and storage devices are required,7014-T00 or T42 racks should be ordered. There is no limit on the quantity of7014 racks allowed.5.2.11 HMC configuration rulesIn order to configure and administer a partitions on p5-590 and p5-595 systems,you must attach at least one IBM Hardware Management Console for pSeries tothe system. We recommend that a second HMC is configured, and each HMChas a second network connection for service and management. The HMC can beordered as a separate product, as shown in Table 5-6 on page 134. For moreinformation about the HMC, see Chapter 8, “Hardware Management Consoleoverview” on page 195.
