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Managing Disk Pools

You manage disk pools for a cluster from the Disk Pools tab in the Gallium Console.

Create a Disk Pool​

  1. Open your Cluster deployment in the Gallium Console.
  2. Select the Disk Pools tab.
  3. Click Create Disk Pool.
  4. Enter a Name for the pool.
  5. Optionally, enter a Description.
  6. Choose a Copy Count — 1, 2, or 3 copies. Pick a value that matches the redundancy you need and your cluster topology. See Copy Count for guidance.
  7. Click Create.
warning

The Copy Count is fixed when the pool is created and cannot be changed later. To use a different copy count, create another pool.

The disk pool is created empty. Before it can fully provision virtual disks, you need to add disks on at least as many servers as the pool's Copy Count — a 3-copy pool needs disks on 3 servers, a 2-copy pool on 2.

Add Disks to a Pool​

After creating a disk pool, add physical disks to it from across the cluster.

  1. Click on the disk pool to open its detail page.
  2. Click Add Disk.
  3. Select a hypervisor to list the disks available on that server.
  4. Select one or more disks from the list. Each disk shows its size, vendor, model, and drive type.
  5. Optionally, set a Display Name for each selected disk.
  6. For each selected disk, click Delete and Add. This erases any existing data on the disk and stages it to be added to the pool.
  7. Once every disk you want is staged, confirm the form to add them.

To add disks from more than one server, repeat the process and select a different hypervisor each time.

warning

Adding a disk erases all existing data on it.

info

Disks with existing partition structures may not appear. If your disk is not shown either contact support or erase the disk using an external tool.

Until the pool has disks on enough servers to satisfy its Copy Count, it cannot fully provision virtual disks. For example, a 3-copy pool with disks on only two servers cannot place all three copies. Spread disks across servers so the pool can meet its copy count.

Rename a Disk Pool​

  1. Click on the disk pool to open its detail page.
  2. Click Rename.
  3. Update the Name and Description as needed.
  4. Click Update.

The System Pool cannot be renamed.

note

A pool's Copy Count cannot be changed after creation, so it is not editable here. To use a different copy count, create a new pool.

Set as Default Disk Pool​

The default disk pool is where new virtual disks are created unless you choose a different pool during VM creation.

  1. Click on the disk pool to open its detail page.
  2. In the Default Disk Pool section, click Set as Default.
  3. Confirm by clicking Set as Default in the dialog.

Only one pool can be the default at a time. Setting a new default automatically unmarks the previous one.

Set as Template Disk Pool​

The template disk pool is where downloaded VM templates are stored.

  1. Click on the disk pool to open its detail page.
  2. In the Template Disk Pool section, click Set for Templates.
  3. Confirm by clicking Set for Templates in the dialog.

Only one pool can be the template pool at a time. Setting a new template pool automatically unmarks the previous one.