Dell PowerStore Configuring Volumes

Volumes

A volume is a single unit that represents a specific amount of storage. Volume storage resources provide hosts with access to general-purpose, block-level storage through network-based iSCSI, Fibre Channel, NVMe-over-Fibre Channel, and NVMe-over-TCP connections. With volume storage, you can manage partitions of block storage resources so that host systems can mount and use these resources. Each volume is associated with a name, a NAA (Network Addressing Authority) identifier and a NGUID (Namespace Globally Unique Identifier).

After a host connects to a volume, it can use the volume like a local storage drive. When a volume is created, the PowerStore Resource Balancer automatically determines on which appliance the volume is provisioned unless that volume has been mapped to a specific host/host group. In such cases, the volume is created only on an appliance that sees this host/host group. Since there is no redirection between appliances within a cluster, I/O is sent to one of the two nodes that contains storage for the volume.