Dell PowerVault DR2000v - Manual (Page 25)

such as CommVault, EMC Networker, and Tivoli Storage Manager. For the current list of qualified DMAs, see the Dell DR
Series System Interoperability Guide .
Rapid NFS is a new client file system type that ensures that only unique data is written to the DR Series system. It uses
user space components and file system in user space (FUSE) to accomplish this. Metadata operations such as file
creates and permission changes go through the standard NFS protocol, whereas write operations go through RDNFS.
Rapid CIFS is a Windows-certified filter driver that also ensures that only unique data is written to the DR Series system.
All chunking and hash computations are done at the media or client server level.
Rapid NFS and Rapid CIFS require you to install a plug-in on the client or media server, depending on your DMA and
configuration. For details, see the Configuring and Using Rapid NFS and Rapid CIFS chapter.
DR Rapid for the DR Series System
DR Rapid is developed by Dell and provides a logical disk interface for use with network storage devices. DR Rapid
allows for better coordination and integration between DR Series system backup, restore, and optimized duplication
operations with backup applications, such as Dell NetVault Backup (NVBU).
The DR Series system and backup application integration is done using DR Rapid plugins developed by Dell. Plugins
allow backup application control over backup image creation, deletion, and duplication. They also allow deduplication
and compression operations to happen on the client-side so that network traffic can be reduced.
DR Rapid allows the supported backup applications to communicate directly with the DR Series system and determine
whether a specific chunk of data already exists on the system. If the data already exists, only the pointers need to be
updated on the DR Series system, and the duplicate chunk of data does not need to be transferred to the system. This
process provides two benefits: it improves the overall backup speed, and also reduces the network load.
RDA with OST for the DR Series System
OpenStorage Technology (OST) is developed by Symantec and provides a logical disk interface for use with network
storage devices. The DR Series system appliance can use OST via DR Rapid plug-in software to integrate its data
storage operations with a number of data management applications (DMAs). Within Dell, OST is part of DR Rapid.
RDA with OST allows for better coordination and tighter integration between DR Series system backup, restore, and
optimized duplication operations and data management applications. For a list of the supported applications, see the
Dell DR Series System Interoperability Guide .
Integration is done via a RDA with OST plug-in developed for the DR Series system, through which data management
applications can control when the backup images are created, duplicated, and deleted. The major benefit of RDA with
OST is that it allows the deduplication operations to happen on the client side so that network traffic can be reduced.
The RDA with OST plug-in allows data management applications to take full advantage of such DR Series system
features as data deduplication, replication, and energy efficiency. DR Series systems can access the OpenStorage API
code through the plug-in, which can be installed on the media server platform choice you make (Windows or Linux). The
OST protocol allows the supported backup applications to communicate directly with the DR Series system and
determine whether a specific chunk of data already exists on the system. This process means that if the data already
exists, only the pointers need to be updated on the DR Series system, and the duplicate chunk of data does not need to
be transferred to the system. This process provides two benefits: it improves the overall backup speed, and also reduces
the network load.
When RDA with OST is used with the DR Series system, it offers the following benefits:
• OST protocol provides faster and improved data transfers:
– Focused on backups with minimal overhead
– Accommodates larger data transfer sizes
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