HP Server rp7420 HP 9000 rp7420 Server - User Service Guide, Fifth Edition - Page 27
MP/SCSI MP Core I/O Board, Procurium LAN/SCSI Board, Mass Storage (Disk) Backplane
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Figure 1-10 Internal Disks MP/SCSI MP Core I/O Board The HP 9000 rp7420 server accommodates two sets of MP Core I/O functionality. Each MP/SCSI core I/O board set consists of a MP/SCSI board and a Procurium LAN/SCSI board. At least one MP/SCSI board is required (independent of partitions). An additional MP/SCSI board can be added as well (and is required in a dual partition system). Both MP/SCSI boards are oriented vertically and plug into the system backplane. The MP/SCSI board incorporates a dual channel Ultra160 SCSI controller. Procurium LAN/SCSI Board At least one Procurium LAN/SCSI board is required for the minimum system configuration; two are required in a dual partition system. The Procurium board is a standard PCI form factor card with PCI card edge connectors. The PCI-X backplane has one slot location reserved for the required Procurium board and another that can accommodate either a Procurium board or any other supported add-in PCI-X card. The Procurium board is hot-pluggable. Mass Storage (Disk) Backplane Internal mass storage connections (to disks) are routed on the mass storage backplane, having connectors and termination circuitry. All disks are hot-pluggable. The HP 9000 rp7420 server accommodates one internal, removable media device. Therefore, only one power connector for a removable media device is required on the mass storage backplane. The mass storage backplane incorporates a circuit that enables power to the internal removable media device to be programmatically cycled. Detailed HP 9000 rp7420 Server Description 27