Dell EqualLogic PS4100E, Руководство по настройке

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March 2013 Dell EqualLogic Configuration Guide v14.1 12-113
12 FS Series file level operations
In this section we provide an overview of key FS Series Appliance features along with some operational
limits. Please refer to the
NAS Service Management Tasks
section of the EqualLogic PS Series Group
Administration Manual (version 5.1 or later) for detailed descriptions and all administrative task
procedures.
12.1 NAS cluster
The NAS cluster is the logical run-time container in which one or more NAS containers are created.
From the point of view of NAS clients, the NAS cluster is a virtual file server that hosts multiple CIFS
shares or NFS exports. You can only have one NAS Cluster per EqualLogic group. NAS clients connect
to file storage through a single NAS client virtual IP address. Client connections are load balanced
across the available NAS controllers in the cluster. When you configure a NAS cluster, you specify the
network configuration for the cluster and the amount of storage pool space consumed by the NAS
Reserve.
12.2 NAS reserve
The NAS reserve is the storage space allocated to the NAS Cluster from an EqualLogic PS Series
storage pool. The NAS reserve has the following properties:
•
It resides within a single EqualLogic storage pool. Only one storage pool in the EqualLogic
storage group can be used for allocating the NAS reserve.
•
It is formatted with the Dell FluidFS.
•
A fixed amount of storage space in the pool (512GB per controller node pair) is consumed by
NAS cluster metadata. You should add 512GB per controller node pair to the calculated size of
the NAS Reserve to compensate for this.
•
The NAS reserve can be expanded later when more storage pool space is available.
•
At the array level, the NAS reserve is comprised of a variable number of automatically created
volumes (from a minimum of two volumes up to a maximum of 34). The actual number of
storage volumes created within the pool depends on the reserve size setting.
Note: You cannot decrease the size of a NAS Reserve once it has been created.
12.2.1 Relationship between PS Series groups, pools and NAS reserve
The relationships are illustrated in Figure 37. As shown in the figure, the NAS Reserve pool can exist in
a group hosting a single pool, or in a group hosting up to three other pools simultaneously.