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Zoning is a collection of related Diamond Storage Array capabilities supporting flexible Diamond
configuration management configurable via CLI commands in the Command Line Interface mode or in
the Advanced CLI Configuration page in the ExpressNAV interface. Zoning supports security by
granting or denying access between initiators and devices as defined by an administrator.
A zone is a collection of devices which can access
each other. The devices in a zone usually include
one or more initiators, one or more devices, and
one or more paths between the initiators and the
devices.
To set up zones, use the Command Line Interface
(refer to
Accessing the Array
Advanced CLI page in the ExpressNAV
interface. Zone CLI commands only take effect
after you enter the ZoneCommit command.
The individual elements are referred to as
device_lun, host_name, port_number and zone_name
as defined in Exhibit 5.9-1.
Exhibit 5.9-1 Definitions of zone configuration
entries.
device_lun
The LUN of the JBOD or RAID drive
host_name
In a Fibre Channel environment, the
WWPN; in a SCSI environment, SCSI
Initiator ID
port_number The Diamond port number (0, 1) for the
data path
zone_name
Alphanumeric or '_', character string less
than or equal to 16 characters long
Principles of Zoning
Zoning provides a validation filter for each SCSI
command.
Each zone entry includes a named zone, a host
portion, a port portion and a device portion. The
components of a valid path from a host to a device
satisfy the following conjunction:
<host_name> AND <port_list> AND device_list>
is named to identify it from other
The zone
zones. It appears as
zone_name
defines the valid access path
The host portion
from a host through a port to a device (LUN),
69
ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
5.9 Creating Zones
on page 17) or the
in this manual.
representing the Initiator ID in a SCSI
environment or the World Wide Port Name in a
Fibre Channel environment. It appears as
in this manual.
host_name
defines the LUN(s)
The device portion
participating in the zone. It appears as
in this manual.
defines the Fibre Channel or
The port portion
SCSI port in the Diamond Storage Array. It
appears as
in this manual.
port_n
Each command received by the
The process:
array is parsed to determine its host/HBA
identifier, its port number and the target LUN,
forming the zone nexus. This zone nexus is
looked up in the defined zones table. If the zone
nexus is present, the operation continues; if it is
not found, the command is rejected with the
appropriate status and sense data.
Two zone configurations accessed through the
CLI regulate zoning:
The Planned configuration
configuration used to build or edit the desired
configuration. The Planned configuration does
not control I/O access until it is transformed into
the Active Zone Configuration via successful
completion of the
ZoneCommit
Other than as a site for zone configuration editing,
the Planned configuration has no impact on the
Active configuration or the array. Changes to the
Planned configuration may be made without
considering synchronization with other
configuration commands.
Use the
command to clear the
ZoneClearAll
Planned configuration.
If, while working in the Planned configuration,
you decide you want to negate that configuration
device_lun
is a work-in-process
command.
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