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Zones
and edit the Active configuration, use the
ZoneRetrieve
command. The information from the
Active configuration is 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 array with zones:
• You must be careful when changing array
zoning configurations. Internal validation logic
cannot detect misconfigurations.
• The array 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 array.
• You must refer to a device by a consistent LUN
across zones in accordance with Fibre Channel
specifications.
• JBOD/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 array 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
available; 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)