Overview

 

DPA (Data Protection Application)

• A Symantec application run on the media-server, such as NetBackup, that protects data by controlling storage server access, storage server properties, image management, image properties, and event monitoring. 

• CT: What is this? Quantum-provided software-library installed on the Symantec media-server to provide the OST interface between the DPA and the DXi. 

LSU ( Logical Storage Unit )

• A logically addressed unit of storage that can be composed of various physical storage units.
• There is no limit in OST on the number of LSUs per storage server.

Maximum Fragment Size

• The maximum size of one image fragment on disk before creating the next fragment. We can change the maximum size of 1 data fragment within the backup application: 

 

 

 

 

Media Server

• A Windows or Unix-based server-appliance running Symantec software to perform backups/restores to/from the DXi.

OST (Open Storage Technology)

• A term used by Symantec to denote a logical disk interface to various disk storage systems.

OST Image

• The backup data stored from one host.

OST Plugin

• ADD description here.

STS (Storage Server)

• An entity that mediates access to the LSUs.
• The maximum number of storage servers per DXi system is 100.

STU  (Storage Unit)

• A logically addressed abstraction that represents a physical storage device or devices, such as a tape library containing two tape drives. If the physical configuration changes, the backup application can access the new devices by addressing the STU, regardless of the new physical configuration. 

---

What's Next?

What is OST? >