Select a volume configuration for NFS storage in the SDDC according to the requirements of the management applications that use the storage.

Multiple datastores can be created on a single volume for applications that do not have a high I/O footprint.

  • For high I/O applications, such as backup applications, use a dedicated volume to avoid performance issues.

  • For other applications, set up Storage I/O Control (SIOC) to impose limits on high I/O applications so that other applications get the I/O they are requesting.

Table 1. Design Decisions on Volume Assignment

Decision ID

Design Decision

Design Justification

Design Implication

SDDC-PHY-STO-010

Use a dedicated NFS volume to support backup requirements.

The backup and restore process is I/O intensive. Using a dedicated NFS volume ensures that the process does not impact the performance of other management components.

Dedicated volumes add management overhead to storage administrators. Dedicated volumes might use more disks, depending on the array and type of RAID.

SDDC-PHY-STO-011

Use a shared volume for other management component datastores.

Non-backup related management applications can share a common volume due to the lower I/O profile of these applications.

Enough storage space for shared volumes and their associated application data must be available.