HP 3PAR StoreServ 7450 2-node HP 3PAR StoreServ 7000 SmartStart 1.2 User&# - Page 62

Glossary active VLUN allocation limit allocation warning chunklet CPG CPG template created host drive cage drive magazine export Fast Class Fibre Channel adapter fully provisioned virtual volume growth increment growth limit growth warning host host definition host-sees VLUN template iSCSI adapter iSCSI name The pairing of a virtual volume and a LUN so the host can access its virtual volume and I/O writes can be saved to the virtual volume. The VLUN parameters determine whether a virtual volume is expressed as an active VLUN. VLUNs that are not active will not communicate with the HP 3PAR StoreServ Storage system. User-defined threshold that can be set for Thinly-Provisioned Virtual Volumes and fully-provisioned virtual volumes to cap their potential size. User-defined threshold that can be set for Thinly-Provisioned Virtual Volumes and fully-provisioned virtual volumes to alert users when the volumes reach a certain size. A block of contiguous storage space on a physical disk. On F-Class and T-Class systems, all chunklets are 256 MB. On HP 3PAR 10000 systems, all chunklets are 1 GB. Common Provisioning Group (also known as a storage pool or logical disk pool). A set of logical disks from which you can create virtual volumes and virtual copies that are capable of allocating storage on demand. Common Provisioning Group template. A CPG template contains a set of common provisioning group and logical disk parameters that HP 3PAR Management Console users can apply in order to create a new Common Provisioning Group. A host that is defined on the system but does not necessarily have any physically connected host paths or WWNs assigned to it. A component in a rack or chassis that contains a drive. Drive cages connect to nodes for communication with hosts. Drives may be Fibre Channel or iSCSI. An electronic circuit board mounted on a mechanical structure that is inserted into a drive bay in a drive cage. A drive magazine holds up to four physical disks. To present a virtual volume to a host. Exporting makes a volume available to a host by creating an association between the volume's name and a LUN (logical unit number) for the specified host and port. Drive type: either Fibre Channel or Serial Attached SCSI (SAS). With regard to drive types and drive capacities, the abbreviation FC applies to Fast Class. With regard to ports, the abbreviation FC applies to Fibre Channel only. A Fibre Channel PCI host bus adapter (HBA) located in a controller node. The Fibre Channel adapter connects a controller node to a host or to a drive chassis. A virtual volume (snapshot) with a set amount of user space and for which snapshot administration space and snapshot data space draw resources from a Common Provisioning Group (CPG). The unit of storage space by which the system creates and allocates additional logical disks to a Common Provisioning Group (CPG) when the volumes in that CPG require additional resources. The minimum growth increment varies according to the number of controller nodes in the system (from 8 GB for a two-node system to 32 GB for a eight-node system). An optional setting that enables you to specify the maximum size to which a CPG can grow. An optional setting that enables you to specify the size at which the system alerts you to the amount of CPG growth. A path or set of paths, defined as either WWN or iSCSI names, to one or more ports on a system. The name of the host and the list of the paths (WWN or iSCSI) assigned to the host, if any. If you remove all the paths assigned to the host, the host name becomes the host definition. A VLUN template that allows a specified host connected to any port to see a virtual volume as a specified LUN (logical unit number). An iSCSI PCI host bus adapter (HBA) located in a controller node. An iSCSI adapter connects a controller node on an iSCSI port to a host. The name of an iSCSI path. You use an iSCSI name to identify that iSCSI path to a host. 62 Glossary