Silicon Graphics InfiniteStorage 4000 Series, Настройка и обслуживание

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Chapter 4: Configuring a Storage Array 71
The
mapping
parameter defines whether you want the storage management software
to map the volume to a host, or if you want to map the volume to a host at a later time.
To allow the storage management software to map the volume to a host, use the
default
parameter. To map the volume to a host at later, use the
none
parameter.
To map a volume to a host, use the
set volume logicalUnitNumber
command.
To turn on data assurance, set the
dataAssurance
parameter to
enabled
.
To turn on cache read prefetch, set the
cacheReadPrefect
parameter to
TRUE
.
The usage of the the
owner
parameter, the
cacheReadPrefetch
parameter, and
the
segmentSize
parameter is the same as described in the previous examples of
the
create volume
command.
Creating Thin Volumes
on a Disk Pool
If you want to add a new thin volume to an existing disk pool, use this command:
create volume diskPool=" diskPoolName "

userLabel=" volumeName " capacity= volumeVirtualCapacity

thinProvisioned=TRUE

[owner=(a|b) |

mapping=(none|default) |

dataAssurance=(none|enabled) |

(existingRepositoryLabel= existingRepositoryName |

newRepositoryCapacity= newRepositoryCapacityValue [KB |
MB | GB | TB | Bytes]) |

repositoryMaxCapacity= repositoryMaxCapacityValue [KB|MB
|GB|TB|Bytes] |

repositoryExpansionPolicy=(automatic|manual) |

warningThresholdPercent= warningThresholdPercentValue |

cacheReadPrefetch=(TRUE | FALSE)]
The
diskPool
parameter is the name of the disk pool in which you want to create a
new thin volume. If you do not know the disk pool names on the storage array, you
can use the
show allVolumes summary
command to get a list of the volumes
and the disk pools to which the volumes belong.
The
userLabel
parameter is the name that you want to give to the disk pool. The
disk pool name can be any combination of alphanumeric characters, hyphens, and
underscores. The maximum length of the disk pool name is 30 characters. You must
enclose the disk pool name with double quotation marks (“ ”).
The
capacity
parameter defines the virtual capacity of the thin volume. The
capacity is the value that is reported to the host. As users add information to the thin
volume the physical size of the volume increases. When you define the capacity of the
thin volume you must define a capacity of at least 32 GB. The maximum capacity that
you can define is 63 TB.