Choosing a Pool to provision VSM

CloudByte ElastiStor follows a QOS-centric approach to provisioning. When you provision a VSM, your choice of the Pool depends on the availability of Pools that satisfy the required throughput and IOPS.

Selecting the Pool

  1. In the ElastiCenter navigation pane, click Tenant Storage Machine.
  2. Click Add VSM.
  3. After you specify the VSM details such as Name and the QoS details, click Next.
  4. In the following screen, select the Pool after evaluating the IOPS.
  5. Click Next to specify the Network details.

Choosing a VSM to provision Storage Volume

When you provision storage, your choice depends on the availability of VSMs that satisfy the required throughput and IOPS.

To provision storage,

  1. In ElastiCenter, click Storage Volumes in the navigation pane.
  2. Click Provision Storage.
  3. In the following screen, specify the basic storage details and then click Next.
  4. Select a VSM that satisfies the QoS requirements. The graphical representation helps you with the IOPS data.
  5. Click Next and then proceed to complete the provisioning.


ElastiStor can automate Node selection and resource allocation if you provide the required SLA/QoS parameters. Sensing the level of storage performance and capacity the application requires, ElastiStor automatically allots the right Pool.

Auto-provisioning is particularly helpful when you have innumerable Pools/VSMs. CloudByte ElastiStor chooses the appropriate Pool/VSM for provisioning automatically.

How to auto-provision

  1. In ElastiCenter, select Global Settings.
  2. auto_provisioning_global_settings

  1. Click the Edit icon for and
  2. In the Value column, specify yes (instead of the default no which implies provisioning is manual) as shown in the following screen:



Assume that auto-provisioning is enabled and there are three Pools (pool1 with 500 IOPS, pool2 with 400 IOPS, and pool3 with 300 IOPS respectively). If the administrator wants to create a VSM with 100 IOPS, pool1 (the Pool with the highest IOPS value) is automatically selected for VSM creation.