HP P6000 HP P6300/P6500 Enterprise Virtual Array User Guide (593079-001, June - Page 290

redundant power configuration reporting group RoHS room temperature RPO A capability of the Enterprise storage system racks and enclosures to allow continuous system operation by preventing single points of power failure. • For a rack, two AC power sources and two power conditioning units distribute primary and redundant AC power to enclosure power supplies. • For a controller or drive enclosure, two power supplies ensure that the DC power is available even when there is a failure of one supply, one AC source, or one power conditioning unit. Implementing the redundant power configuration provides protection against the loss or corruption of data. An Enterprise Storage System controller pair and the associated disk drive enclosures. The Enterprise Storage System controller assigns a unique decimal reporting group number to each EMU on its loops. Each EMU collects disk drive environmental information from its own sub-enclosure and broadcasts the data over the enclosure address bus to all members of the reporting group. Information from enclosures in other reporting groups is ignored. Reduction of Hazardous Substances. See ambient temperature. Recovery point objective. The maximum age of the data you want the ability to restore in the event of a disaster. For example, if your RPO is six hours, you want to be able to restore systems back to the state they were in as of no longer than six hours ago. To achieve this objective, you need to make backups or other data copies at least every six hours. S SCSI SCSI-3 SCSI-3 Enclosure Services selective presentation serial transmission SES SFP solid state disk (SSD) SSN storage carrier storage pool storage system Storage System Name switch 1. Small Computer System Interface. An American National Standards Institute (ANSI) interface which defines the physical and electrical parameters of a parallel I/O bus used to connect computers and a maximum of 16 bus elements. 2. The communication protocol used a controller pair and the hosts. Specifically, the protocol is Fibre Channel drive enclosure or SCSI on Fibre Channel. SCSI is the higher command-level protocol and Fibre Channel is the low-level transmission protocol. The controllers have full support for SCSI-2; additionally, they support some elements of SCSI-3. The ANSI standard that defines the operation and function of Fibre Channel systems. See SES. The process whereby a controller presents a virtual disk only to the host computer which is authorized access. A method of transmission where each bit of information is sent sequentially on a single channel, not simultaneously on all channels as occurs in parallel transmission. SCSI-3 Enclosures Services. Those services that establish the mechanical environment, electrical environment, and external indicators and controls for the proper operation and maintenance of devices within an enclosure. Small form-factor pluggable transceiver. A high-performance storage device that contains no moving parts. SSD components include either DRAM or EEPROM memory boards, a memory bus board, a CPU, and a battery card. Storage System Name. An HP P6000 Command View-assigned, unique 20-character name that identifies a specific storage system. See carrier. The aggregated blocks of available storage in the total physical disk array. See array. See SSN. An electronic component that switches network traffic from one connection to another. 290 Glossary