HP 2000fc Hp StorageWorks 2000 Family Modular Smart Array CLI reference guide - Page 270

out-of-band management ownership PHY PID point-to-point port bypass circuit (PBC) port WWN power-and-cooling module priority RAID RAID controller RAIDIO Method of accessing and managing a system using the RS-232 or Ethernet connection. In an active-active configuration, one controller has ownership of the following resources: virtual disks and vdisk spares. When a controller fails, the other controller assumes temporary ownership of its resources. Hardware component that converts between digital and analog in the signal path between the Storage Controller, Expander Controller, disk drives, and SAS ports. Primary controller identifier number. Point-to-point is an alternative to FC-AL topology and is required in some fabric switch configurations. The controller enclosure supports point-to-point connections only to fabric ports (F_Ports). Loop topology is appropriate for most fabric switches, as it provides more flexibility when considering fault-tolerant designs. See host port interconnect. See world wide port name (WWPN). A FRU that includes an AC power supply and two cooling fans. An enclosure has two power-and-cooling modules for failure tolerance and can operate with only one module. Priority enables controllers to serve other I/O requests while running jobs (utilities) such as rebuilding virtual disks. Priority ranges from low, which uses the controller's minimum resources, to high, which uses the controller's maximum resources. Redundant Array of Independent Disks, a family of techniques for managing multiple disks to deliver desirable cost, data availability, and performance characteristics to host environments. (SNIA) See controller. RAID input/output; a nickname for the controller board. 270 HP StorageWorks 2000 Family Modular Smart Array CLI reference guide • May 2008