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# Access types

Access types are the permissions that are associated with an access control entry (ACE).

This table lists and describes the possible access types.

Table 1. Access types
Access type | Description
--- | ---
ADMIN | Grants administrator privilege to grant or deny access control entries to hosts and users.
ADMINRD | Grants read access only to all access control information.
ALL | All possible access types that are granted except ADMIN and ADMINRD. Must be directed to ALL volumes.
BASE | Allows the discovery of devices and to obtain states and statistics from the storage system (directors and volumes).
BASECTRL | Allows base control operations on volumes and device groups.
BCV | Allows TimeFinder (BCV) and clone control and status operations.
CACHCTRL | Allows cache control operations concerning LRU partition management.
CFGDEV | Allows powerful configuration control operations that manage various types of configuration changes on volumes in the storage system.
CFGSYM | Allows access to set storage system attributes, set port flags, and swap RA groups. Must be directed to ALL volumes.
CHECKSUM | Allows volume Double Checksum operations.
CREATEDV | Allows the creation and deletion of volumes.
DIRCTRL | Allows you to take directors and their ports offline and online. Must be directed to ALL volumes.
ECC | Allows the ECC agent to run on the requested host.
OPTMZR | Allows user-configurable attributes that may affect the Optimizer behavior.
POWRPATH | Access to PowerPath-directed devices in an SRDF group. Must be directed to ALL volumes.
QOS | Allows the execution of Quality of Service (QOS) performance control operations to manage copy priorities. Excludes LRU cache control functionality.
RCOPY | Manages Open Replicator sessions.
SRDF | Allows SRDF control and set operations.
SDDF | Allows the DeltaMark (Change Tracker) functionality that monitors track changes.
SDR | Allows mapping/unmapping of devices to directors/ports for the Disk Reallocation (SDR) feature.
SNAP | Allows the creation and management of virtual copy sessions between a source volume and multiple virtual (VDEV) target volumes.
VLOGIX | Enables access to volume Masking or Volume Logix volumes.