HP EVA P6550 HP P6300/P6500 EVA User Guide (5697-2486, September 2013) - Page 306

Network Storage Controller node port non-OFC (Open Fibre Control) NONCRITICAL Condition NSC NVRAM See NSC. A device port that can operate on the arbitrated loop topology. A laser transceiver whose lower-intensity output does not require special open Fibre Channel mechanisms for eye protection. The Enterprise storage system transceivers are non-OFC compatible. A drive enclosure EMU condition report that occurs when one or more elements inside the enclosure have failed or are operating outside of their specifications. The failure does not affect continued normal operation of the enclosure. All devices in the enclosure continue to operate according to their specifications. The ability of the devices to operate correctly may be reduced if additional failures occur. UNRECOVERABLE and CRITICAL errors have precedence over this condition. This condition has precedence over INFORMATION condition. Early correction can prevent the loss of data. Network Storage Controller. The HSV Controllers used by the Enterprise storage system. Nonvolatile Random Access Memory. Memory whose contents are not lost when a system is turned Off or if there is a power failure. This is achieved through the use of UPS batteries or implementation technology such as flash memory. NVRAM is commonly used to store important configuration parameters. O occupancy alarm level OCP online storage operator control panel A percentage of the total disk group capacity in blocks. When the number of blocks in the disk group that contain user data reaches this level, an event code is generated. The alarm level is specified by the user. Operator Control Panel. The element that displays the controller's status using indicators and an LCD. Information selection and data entry is controlled by the OCP push-button. An allotment of storage space that is available for immediate use, such as a peripheral device that is turned on and connected to a server. See OCP. P param password The portion of the HSV controller termination code display that defines: • The two-character parameter identifier that is a decimal number in the 0 through 31 range. • The eight-character parameter code that is a hexadecimal number. See also IDX, TC. A security interlock where the purpose is to allow: • A management agent to control only certain storage systems • Only certain management agents to control a storage system PDM PDU petabyte physical disk Power distribution module. A thermal circuit breaker-equipped power strip that distributes power from a PDU to Enterprise Storage System elements. Power distribution unit. The rack device that distributes conditioned AC or DC power within a rack. A unit of storage capacity that is the equivalent of 250, 1,125,899,906,842,624 bytes or 1,024 terabytes. A disk drive mounted in a drive enclosure that communicates with a controller pair through the device-side Fibre Channel loops. A physical disk is hardware with embedded software, as opposed to a virtual disk, which is constructed by the controllers. Only the controllers can communicate directly with the physical disks. The physical disks, in aggregate, are called the array and constitute the storage pool from which the controllers create virtual disks. physical disk array See array. 306 Glossary