What is a GPFS NSD?

What is a GPFS NSD?

To create the network shared disks (NSD) in GPFS™, create a disk file to be used as input to the mmcrnsd command. The disk file defines the GPFS pools and the NSDs. A recommended GPFS pool configuration has two storage pools, a system pool for metadata only and a data pool.

What is NSD disk?

If all servers in a cluster cannot be attached directly to the SAN, Spectrum Scale provides a protocol that implements a block-level interface over the network, called an NSD. For larger Spectrum Scale clusters, the complexity of SAN configuration can become increasingly difficult.