A standard backup interface for NAS devices exists in the form of the network data management protocol (NDMP), which is a backup standard for NAS devices that do not support installation of a backup agent. However, some NAS devices use a custom operating system that does not support third party backup agents.
NAS devices that use standard operating systems (for example, Windows-powered NAS devices) support the installation of backup agents, and can therefore be backed up like any other file server. NDMP Filers, or NAS devices, reside on the network with the primary purpose of providing file services. For more details on NDMP Protocol please see the following site:.All tape-handling functions, such as split-image issues, are dealt with by this service.
A TAPE server - This service either reads an NDMP data stream and writes it to tape or reads from tape and writes an NDMP data stream, depending upon whether a backup or restore is taking place. A DATA server - This service either reads from disk and produces an NDMP data stream (in a specified format) or reads an NDMP data stream and writes to disk, depending upon whether a backup or restore is taking place. This virtual state machine is referred to as the NDMP server.Ĭurrently an NDMP server can be thought of providing two services: For every connection between the client and the NDMP host, there is a virtual state machine on the NDMP host that is controlled using NDMP. The architecture follows a client-server model and the backup software is considered to be a client to the NDMP server. The Veritas Backup Exec NDMP Option lets Backup Exec use the Network Data Management Protocol (NDMP) to initialize and control backups and restores of Network Attached Storage (NAS) devices such as NetApp filers as explained below. NDMP is an Internet-Draft standard that uses port 10000 by default. NDMP is an acronym for Network Data Management Protocol, which is an open standard protocol for enterprise-wide backups of heterogeneous network-attached storage. How to perform a backup of NDMP Filers (NAS) with the Veritas Backup Exec Network Data Management Protocol (NDMP) Option.
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