The following figure shows the storage system resources that you can configure and manage using Hitachi Virtual Storage Platform One Block Administrator.
- Servers
- Ports
- Volumes
- Snapshots
- Pools
- Drives
Drives
Drives are hardware devices that contain storage media and the mechanisms used to read from and write to that media. Drive capacity is shown as physical capacity in the following units: KB (kilobyte), MB (megabyte), GB (gigabyte), or TB (terabyte).
Drive groups
RAID groups: A RAID group is a collection of physical drives that work together as a single logical unit to provide data redundancy, improved performance, or both.
Distributed Data Protection (DDP) groups: A DDP group is a dynamic RAID configuration that distributes parity and spare capacity across all drives in the group
Pools
A pool is virtualized storage that aggregates capacity from multiple RAID groups or DDP groups and supports thin provisioning, allowing logical volumes to be created without immediately allocating all physical storage.
Volumes
Volumes are thin-provisioned logical entities that consume physical storage from an Hitachi Dynamic Provisioning (DP) pool only as data is written, rather than allocating the full capacity at the time of creation.
Snapshots
Snapshots are point-in-time copies of volumes created using Thin Image Advanced. When a snapshot is created, only the changed data (differential data) from the original volume is stored in the snapshot pool, which minimizes storage consumption. These space-efficient snapshots can be used for backup, recovery, testing, or data mining.
Ports
Ports are interfaces for connecting storage systems with servers.
Servers
Servers are host objects configured in VSP One Block Administrator that represent physical or virtual servers connected to the storage system. These objects contain the server’s HBA WWNs (for Fibre Channel) or iSCSI initiators (for iSCSI) and define the volumes that the host can access.