ADP and disk assignment differences by system in MetroCluster IP configurations

The operation of Advanced Drive Partitioning (ADP) and automatic disk assignment in MetroCluster IP configurations varies depending on the system model.

Note: In systems using ADP, aggregates are created using partitions in which each drive is partitioned in to P1, P2 and P3 partitions. The root aggregate is created using P3 partitions.

You must meet the MetroCluster limits for the maximum number of supported drives and other guidelines.

NetApp Hardware Universe

ADP and disk assignment on AFF A320 systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum recommended shelves (per site) Two shelves The drives on each external shelf are divided into two equal groups (halves). Each half-shelf is automatically assigned to a separate pool.

One shelf is used by the local HA pair. The second shelf is used by the remote HA pair.

Partitions on each shelf are used to create the root aggregate. Each of the two plexes in the root aggregate includes the following partitions::

  • Eight partitions for data
  • Two parity partitions
  • Two spare partitions
Minimum supported shelves (per site) One shelf The drives are divided into four equal groups. Each quarter-shelf is automatically assigned to a separate pool.

Each of the two plexes in the root aggregate includes the following partitions:

  • Three partitions for data
  • Two parity partitions
  • One spare partition

ADP and disk assignment on AFF A220 systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum recommended shelves (per site) Internal drives only

The internal drives are divided into four equal groups. Each group is automatically assigned to a separate pool and each pool is assigned to a separate controller in the configuration.

Note: Half of the internal drives remain unassigned before MetroCluster is configured.

Two quarters are used by the local HA pair. The other two quarters are used by the remote HA pair.

The root aggregate includes the following partitions in each plex:

  • Three partitions for data
  • Two parity partitions
  • One spare partition
Minimum supported shelves (per site) 16 internal drives

The drives are divided into four equal groups. Each quarter-shelf is automatically assigned to a separate pool.

Two quarters on a shelf can have the same pool. The pool is chosen based on the node that owns the quarter:

  • If owned by the local node, pool0 is used.
  • If owned by the remote node, pool1 is used.

For example: a shelf with quarters Q1 through Q4 can have following assignments:

  • Q1: node_A_1 pool0
  • Q2: node_A_2 pool0
  • Q3: node_B_1 pool1
  • Q4:node_B_2 pool1
Note: Half of the internal drives remain unassigned before MetroCluster is configured.

Each of the two plexes in the root aggregate includes the following partitions:

  • One partition for data
  • Two parity partitions
  • One spare partition

ADP and disk assignment on AFF A250 systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum recommended shelves (per site) Two shelves The drives on each external shelf are divided into two equal groups (halves). Each half-shelf is automatically assigned to a separate pool.

One shelf is used by the local HA pair. The second shelf is used by the remote HA pair.

Partitions on each shelf are used to create the root aggregate. The root aggregate includes the following partitions in each plex:

  • Eight partitions for data
  • Two parity partitions
  • Two spare partitions
Minimum supported shelves (per site) 24 internal drives only The drives are divided into four equal groups. Each quarter-shelf is automatically assigned to a separate pool.

Each of the two plexes in the root aggregate includes the following partitions:

  • Three partitions for data
  • Two parity partitions
  • One spare partition

ADP and disk assignment on AFF A300 systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum recommended shelves (per site) Two shelves The drives on each external shelf are divided into two equal groups (halves). Each half-shelf is automatically assigned to a separate pool.

One shelf is used by the local HA pair. The second shelf is used by the remote HA pair.

Partitions on each shelf are used to create the root aggregate. The root aggregate includes the following partitions in each plex:

  • Eight partitions for data
  • Two parity partitions
  • Two spare partitions
Minimum supported shelves (per site) One shelf The drives are divided into four equal groups. Each quarter-shelf is automatically assigned to a separate pool.

Each of the two plexes in the root aggregate includes the following partitions:

  • Three partitions for data
  • Two parity partitions
  • One spare partition

ADP and disk assignment on AFF A700 systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum recommended shelves (per site) Four shelves Drives are automatically assigned on a shelf-by-shelf basis.

Each of the two plexes in the root aggregate includes:

  • 20 partitions for data
  • Two parity partitions
  • Two spare partitions
Minimum supported shelves (per site) One shelf The drives are divided into four equal groups (quarters). Each quarter-shelf is automatically assigned to a separate pool.

Each of the two plexes in the root aggregate includes:

  • Three partitions for data
  • Two parity partitions
  • One spare partition

ADP and disk assignment on AFF A800 systems

Guideline Shelves per site Drive assignment rules ADP layout for root aggregate
Minimum recommended shelves (per site) Internal drives and four external shelves The internal partitions are divided into four equal groups (quarters). Each quarter is automatically assigned to a separate pool.

The drives on the external shelves are automatically assigned on a shelf-by-shelf basis, with all of the drives on each shelf assigned to one of the four nodes in the MetroCluster configuration.

The root aggregate is created with 12 root partitions on the internal shelf.

Each of the two plexes in the root aggregate includes:

  • Eight partitions for data
  • Two parity partitions
  • Two spare partitions
Minimum supported shelves (per site) 24 internal drives only The internal partitions are divided into four equal groups (quarters). Each quarter is automatically assigned to a separate pool.

The root aggregate is created with 12 root partitions on the internal shelf.

Each of the two plexes in the root aggregate includes:

  • Three partitions for data
  • Two parity partitions
  • One spare partitions

Disk assignment on FAS2750 systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum recommended shelves (per site) One internal and one external shelf The internal and external shelves are divided into two equal halves. Each half is automatically assigned to different pool Not applicable.
Minimum supported shelves (per site) (active/passive HA configuration) Internal drives only Manual assignment required.

Disk assignment on FAS8200 systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum supported shelves (per site) Two shelves The drives on the external shelves are divided into two equal groups (halves). Each half-shelf is automatically assigned to a separate pool. Not applicable.
Minimum supported shelves (per site) (active/passive HA configuration) One shelf Manual assignment required.

Disk assignment on FAS500f systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum recommended shelves (per site) Four shelves Drives are automatically assigned on a shelf-by-shelf basis. Not applicable.
Minimum supported shelves (per site) One shelf The drives are divided into four equal groups. Each quarter-shelf is automatically assigned to a separate pool.

Disk assignment on FAS9000 systems

Guideline Shelves per site Drive assignment rules ADP layout for root partition
Minimum recommended shelves (per site) Four shelves Drives are automatically assigned on a shelf-by-shelf basis. Not applicable.
Minimum supported shelves (per site) Two shelves The drives on the shelves are divided into two equal groups (halves). Each half-shelf is automatically assigned to a separate pool.
Minimum supported shelves (per site) (active/passive HA configuration) One shelf Manual assignment required.