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DR Series Software 4.0 - Administrator Guide

Introducing the DR Series system documentation Introducing the DR Series system Setting up the DR Series system Configuring the DR Series system settings Managing containers Managing replications Monitoring the DR Series system Using GlobalView Configuring and using Rapid NFS and Rapid CIFS Configuring and using Rapid Data Access with NetVault Backup and with vRanger Configuring and using RDA with OST
Understanding RDA with OST Guidelines Terminology Supported RDA with OST software and components Best Practices: RDA with OST and the DR Series System Setting client-side optimization Configuring an LSU Installing the RDA with OST plug-in Configuring DR Series system information using NetBackup Backing Up Data From a DR Series System (NetBackup) Using Backup Exec with a DR Series system (Windows) Understanding the OST CLI commands Understanding RDA with OST Plug-In Diagnostic Logs Collecting Diagnostics Using a Linux Utility Guidelines for Gathering Media Server Information
Configuring and using VTL Configuring and Using Encryption at Rest Support, maintenance, and troubleshooting Supported Ports in a DR Series System

The DR Series system supports the following virtual tape library (VTL) tape access protocols.

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Network Data Management Protocol (NDMP)
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Internet Small Computer System Interface (iSCSI)
•
Fibre Channel (FC)
 
 
Parent topic 

NDMP

NDMP

The Network Data Management protocol (NDMP) is used to control data backup and recovery between primary and secondary storage in a network environment. For example, a NAS server (Filer) can talk to a tape drive for the purposes of a backup.

You can use the protocol with a centralized data management application (DMA) to back up data on file servers running on different platforms to tape drives or tape libraries located elsewhere within the network. The protocol separates the data path from the control path and minimizes demands on network resources. With NDMP, a network file server can communicate directly to a network-attached tape drive or virtual tape library (VTL) for backup or recovery.

The DR Series system VTL container type is designed to work seamlessly with the NDMP protocol.

iSCSI

iSCSI

iSCSI or Internet Small Computer System Interface is an Internet Protocol (IP)-based storage networking standard for storage subsystems. It is a carrier protocol for SCSI. SCSI commands are sent over IP networks by using iSCSI. It also facilitates data transfers over intranets and to manage storage over long distances. iSCSI can be used to transmit data over LANs or WANs.

In iSCSI, clients are called initiators and SCSI storage devices are targets. The protocol allows an initiator to send SCSI commands (CDBs) to the targets on remote servers. It is a storage area network (SAN) protocol, allowing organizations to consolidate storage into data center storage arrays while providing hosts (such as database and web servers) with the illusion of locally attached disks. Unlike traditional Fibre Channel, which requires different cabling, iSCSI can be run over long distances using existing network infrastructure.

iSCSI is a low-cost alternative to Fibre Channel, which requires dedicated infrastructure except in FCoE (Fibre Channel over Ethernet). Note that the performance of an iSCSI SAN deployment can be degraded if not operated on a dedicated network or subnet

The VTL container type is designed to work seamlessly with the iSCSI protocol. For details, see the topic, Creating Storage Containers.

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