HP Storage Provisioning Manager (SPM) version 2.1 User Guide

HP Storage
Provisioning
Manager
SPM, the software application described in this document.
I
initiator An endpoint that consumes storage through a storage area network. These storage consumers
initiate storage actions.
L
logical disk A partition or logical disk that may contain a file system or database or be used by a volume
manager or hypervisor to present higher order volumes. Volumes are backed by capacity that
has been carved from lower level capacity meaning that the source of the capacity has been
identified. In SPM a volume is a type of service.
See also volume.
logical unit The entity within a SCSI target that executes I/O commands. Each logical unit exported by an
array controller corresponds to a volume.
logical unit number A LUN is an address used in the SCSI protocol to access an array within a target. In the case of
SPM, a LUN refers to a volume that has been presented to one or more initiators. SPM also
supports unpresented volumes which have been created but do not have LUNs.
LSM Logical Server Management. Capabilities provided with Matrix OE to enable a high-level
description of workload requirements and the instantiation of that logical server onto a virtual
machine or Virtual Connect blade server.
N
network Technology agnostic term used by SPM to refer to FC based SANs, Fabrics, or IP based SANs.
nonconformant Within SPM, services are nonconformant if and only if at least one of the requirements that defines
the service is not satisfied. Nonconformant services can still be used.
O
Open network FC networks that do not have zones are referred to as open.
P
physical capacity The maximum amount of storage available on an array or pool, as constrained by the physical
structure of the device.
provision Within SPM, to provision a service is to discover resources that fulfill the requirements of that
service, and to assign those resources to the service.
proxy WWN A world wide name in a Fibre Channel network that is used to identify the network to which an
unknown initiator belongs.
Q
quarantine Within SPM, a quarantined resource is a resource that will not be used to fulfill the requirements
of a storage service. Resources can be placed into quarantine by SPM during recovery, or they
can be manually placed into or taken out of quarantine by an administrator.
R
RAID A Redundant Array of Independent Disks. A RAID volume consists of more than one drive, but
appears to the operating system to be a single logical disk. RAID improves performance by disk
striping, which involves partitioning each drive's storage space into units. By placing data on
multiple disks, I/O operations can overlap in a balanced way, improving performance.
resource (n.) A storage catalog entity representing a storage resource. A resource provides a set of services.
resourced Within SPM, a service is resourced if it has been activated and thus has been assigned resources.
104 Glossary