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Creating and Managing Arrays & Partitions

DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)

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D.3 Managing Partitions

The Disk Array Administrator software lets you manage partitions in a

variety of ways. You can:

• View partition status information (see page 218)

• Add a partition (see page 222)

• Expand a partition (see page 243)

• Change a partition name (see page 244)

• Change a partition LUN (see page 245)

• Change a partition’s read-ahead setting (see page 247)

• Control partition access (see page 250)

• Delete a partition (see page 257)

D.3.1 Understanding Partitions

The partitions discussed here are logical subdivisions of an array to

which you can assign a LUN. You can add, expand, rename, change the

LUN, and delete partitions using the RAID controller’s software. This

type of partition is

not the same as a partition you create with your

operating system or third party tools.

When you create an array, you can choose to make the array all one

partition or set up the array for multiple partitions. Using multiple

partitions lets you create one very large array making efficient use of

your disk drives. For example, you could create one very large RAID 5

array and assign one dedicated spare to the array. This minimizes the

amount of disk space allocated to parity and spares compared to the

space required if you created five or six smaller RAID 5 arrays.

Once you set up an array for multiple partitions, you must create each

partition by setting the partition size and assigning the partition a LUN.

You can also give each partition a name. We recommend assigning

names that indicate how the partition will be used. For example, if the

first partition will be used to store your customer database, give it a

name like: cust database.

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DataDirect EF2800 Guia do Utilizador Página 258