HP StorageWorks P2000 HP StorageWorks P2000 G3 MSA System SMU Reference Guide - Page 134

MC metadata network port point-to-point remote replication replication destination volume replication image replication set replication snapshot replication sync point SAS SATA SC secret SES single-port disk snap pool snapshot SSD Management Controller. The processor (located in a controller module) that is responsible for human-computer interface and computer-computer interface functions, and interacts with the SC. Data in the first sectors of a disk drive that stores all disk, vdisk, and volume specific information including vdisk membership or spare identification, vdisk ownership, volumes and snapshots in the vdisk, host mapping of volumes, and results of the last media scrub. The Ethernet port on a controller module through which its Management Controller is connected to the network. Fibre Channel Point-to-Point topology. Asynchronous (batch) replication of block-level data from a volume at a local system to a volume at one or more remote systems by moving the data contained within individual point-in-time snapshots from a local system to one or more remote systems via Fibre Channel or iSCSI links. The capability to perform remote replication is a licensed feature (Remote Snap). A special form of a master volume that is the destination volume for all data being replicated from a replication source volume. A replication destination has special characteristics in that while it is part of a replication set, it cannot be directly accessed by hosts. The contents of the replication destination volume are in a constant state of flux, and are not in a consistent state while a replication is in process. Only snapshots that are associated with a replication destination volume are data consistent. A replication image is a snapshot that contains the data for a specific point in time for the external view of a replication set, as viewed by any volume in the replication set. All snapshots with the same image ID contain the exact same data, and therefore represent the same replication image. A volume that has been enabled for replication and that provides the source data for replication, and an associated replication destination volume. The source volume is typically designated as the replication set's external-view volume. A special image-stabilized snapshot that is taken explicitly for the purposes of replication. This snapshot cannot be mounted for access by hosts and is not counted against snapshot licensing. Its sole purpose is for use in the replication process. This snapshot is typically used as a replication sync point. A replication snapshot can be converted to a regular, licensed snapshot. A snapshot that exists on the source volume and has been successfully replicated to the destination system. Serial Attached SCSI interface protocol or disk-drive architecture. Serial ATA disk-drive architecture. Storage Controller. The processor (located in a controller module) that is responsible for RAID controller functions. The SC is also referred to as the RAID controller. For use with CHAP, a password that is shared between an initiator and a target to enable authentication. SCSI Enclosure Services. A disk that is connected to both controllers so its data path is not fault-tolerant. A single-port disk's type is shown as SAS-S or SATA-S. A volume that stores data that is specific to snapshots of an associated master volume, including copy-on-write data and data written explicitly to the snapshots. A snap pool cannot be mapped. A "virtual" volume that preserves the state of a master volume's data as it existed when the snapshot was created. Data associated with a snapshot is recorded in both the master volume and in its associated snap pool. A snapshot can be mapped and written to. The capability to create snapshots is a licensed feature. Solid-state drive. Supported SSDs have a SATA interface. 134 Glossary