ATTO Technology Diamond Storage Array VT-Class - Manual (Page 63)

52
Zones
the Active configuration will be copied into the
Planned configuration.
To determine what is in the Planned
configuration, type
ZoneInfo Planned .
Active configuration is persistent and establishes
the Diamond zoning configuration after power-
up.
The Planned configuration becomes the Active
configuration after successful execution of the
ZoneCommit command. The Active
configuration is replicated as the Planned
configuration after the successful
ZoneCommit ,
after power-up and after ZoneRetrieve . This
replication eases incremental modifications to the
current zone configuration: you only need to enter
changes. Modifications to the Planned
Configuration made before
ZoneCommit are not
persistent and are lost in the case of power-up.
To determine what is in the Active Configuration,
type
ZoneInfo.
Factors to consider
Several factors must be considered when
configuring a Diamond-VT with zones:
• Be careful when changing Diamond-VT zoning
configurations. Internal validation logic cannot
detect misconfigurations.
• The Diamond-VT zoning may be driven by
external applications which handle
considerations such as aliasing of parameters.
• Stopping or pausing I/O operations during
zoning changes is the responsibility of the host
computer, external to the Diamond-VT.
• You must refer to a device by a consistent LUN
across zones in accordance with Fibre Channel
specifications.
• RAID configuration changes require planning
and preparation independent of whether any
zones are enabled. Such changes affect data
integrity, and any write to an incorrect LUN may
result in data corruption.
• Degraded operation and RAID rebuilding occur
at a lower level than the Zoning features. SCSI
command operation continues to operate, and
you can modify the Zoning configuration via the
ZoneCommit command at any time.
• Zone validation of switch/fabric routing is not
supported. The Diamond-VT operates within a
SAN environment including host systems, host
bus adapters, switches and other devices. The
Operating System you use may limit zoning
flexibility in your SAN.
• You may create up to 32 zones. Each zone may
have up to two ports, up to 24 devices and up to
32 hosts.
Status and Sense Data
Commands sent to a device may be rejected with sense key, code, qualifier as follows:
LOGICAL UNIT NOT CONFIGURED: 68 00 00 No such LUN exists; the initiator does not have access
to this LUN
LOGICAL UNIT NOT SUPPORTED: 25 00 00 The Logical unit is not in an accessible zone
LOGICAL UNIT NOT READY: 04 03 00 The Logical unit is in an accessible zone, but is not
ready; it may be offline or busy
If the logical unit inventory changes for any reason, including completion of initialization,
removal of a logical unit, or creation of a logical unit, the device server generates a Unit Attention
command for all initiators, telling them a
ZoneCommit procedure has been successful. The device
server sets the additional sense code to
REPORTED LUNS DATA HAS CHANGED: 3F 0E 00 (LUN has been added to or removed from the zone)