Home > Storage > PowerScale (Isilon) > Product Documentation > Storage (general) > PowerScale OneFS: Cluster Composition, Quorum, and Group State > Identifying accelerator nodes
Accelerator nodes, such as the PowerScale P100, appear differently in group messages, because they have no disks to be part of the group. Accelerators ("diskless" nodes) appear twice, once as a node with no disks, and again explicitly as a diskless node.
For example, consider the group:
{ 1:0-23, 2,4:0-10,12-24, 5:0-10,12-16,18-25, 6:0-17,19-24, 7:0-10,12-24, 9-10:0-23, 11:0-3,5-24, 12-13, 14:0-23, diskless: 12-13 }
Nodes 12 and 13 are listed both as diskless, but also listed between nodes 11 and 14, albeit with no drives.