A

access

1)To obtain the use of a computer resource.

2)In computer security, a specific type of interaction between a subject and an object that results in flow of information from one to the other.

access-any mode

One of the two access modes that can be set for the storage unit during initial configuration. It enables all fibre-channel-attached host systems with no defined access profile to access all logical volumes on the storage unit. With a profile defined in DS Storage Manager for a particular host, that host has access only to volumes that are assigned to the WWPN for that host. See also pseudo host and worldwide port name.

ACK See request for acknowledgment and acknowledgment.

agent A program that automatically performs some service without user intervention or on a regular schedule. See also subagent.

alert A message or log that a storage unit generates as the result of error event collection and analysis. An alert indicates that a service action is required.

allegiance

For zSeries, a relationship that is created between a device and one or more channel paths during the processing of certain conditions. See also implicit allegiance, contingent allegiance, and reserved allegiance.

allocated storage

The space that is allocated to volumes but not yet assigned. Contrast with assigned storage.

American National Standards Institute (ANSI) An organization of producers, consumers, and general interest groups that establishes the procedures by which accredited organizations create and maintain voluntary industry standards in the United States. (A)

Anonymous

In the DS Storage Manager, the label on an icon that represents all connections that are using fibre-channel adapters

between the storage unit and hosts but are not completely defined to the storage unit. See also anonymous host, pseudo host, and access-any mode.

anonymous host

Synonym for pseudo host. Contrast with Anonymous and pseudo host.

ANSI See American National Standards Institute.

APAR See authorized program analysis report. (GC)

API See application programming interface.

application programming interface

An interface that allows an application program that is written in a high-level language to use specific data or functions of the operating system or another program.

arbitrated loop

A fibre-channel topology that enables the interconnection of a set of nodes. See also point-to-point connection and switched fabric.

array An ordered collection, or group, of physical devices (disk drive modules) that is used to define logical volumes or devices. In the storage unit, an array is a group of disks that the user designates to be managed by the RAID technique. See also redundant array of independent disks.

ASCII (American National Standard Code for Information Interchange) The standard code, using a coded character set consisting of 7-bit coded characters (8 bits including parity check), that is used for information interchange among data processing systems, data communication systems, and associated equipment. The ASCII set consists of control characters and graphic characters. (A) Some organizations, including IBM, have used the parity bit to expand the basic code set.

assigned storage

The space that is allocated to a volume and that is assigned to a port.

authorized program analysis report (APAR) A request for correction of a defect in a current release of an IBM-supplied program. (GC)

326IBM TotalStorage DS8000: Messages Reference

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IBM DS8000 manual Access-any mode, Allegiance, Allocated storage, Anonymous host, Application programming interface