How to add or increase space on the datastore MSA 1000

Background:

I have come into the organization that has small VM environment that was already setup by someone else.

A Blade Server (HPBL25P G1) with 2 ESX Servers and other Windows Servers.

Each server has 2 CPU X 2.8GHz AMD Optepron Processor

Blade Server is conected to a MSA 1000 ACU (It is a dual controller unit, but one of the controller is not connected. (not sure why)

Fiber cables are connected from Blade to the MSA 1000 ACU.

VMware ESX Server is Version 3.0.0, 27701. Virtual Center Server is 2.0

1 Cluster setup that has 2 ESX Servers. HA+DRS is setup (visible in the configuration).

Vmotion is enabled on both the host servers.

I see this under the Datastore

DataStore   Capacity     Free

A                    30GB         28GB

B                    300GB      50GB

C                    300           65GB

This seems the datastore is soon going ot run out of space option.

Question: how do I increase the space or add new space on the MSA1000?

Is this done via the CPQ Array utility?