Virtual TapeServer 8.0 Supplemental Installation Guide

Enabling and Configuring AutoCopy and Instant DR

Data Replication is a advanced software feature that enables you to back up data to remote

Virtual TapeServer (VTS) servers. This feature was implemented as Instant DR and

AutoCopy before this release; Instant DR and AutoCopy are supported on upgraded systems.

To configure Instant DR and AutoCopy, you must configure network settings for all VTS

locations. Adhere to the following requirements and guidelines when configuring these

software modules:

• The VTS server provides two Ethernet ports (eth0 and eth1). Under normal

circumstances, eth0 is used for local IP traffic to access the user interface for the VTS and

for mounting communication between VTS and hosts. When Instant DR is configured,

eth1 is configured with a routable address to communicate with additional VTS servers at

remote locations.

• The Event Management Service (EMS) is responsible for monitoring mounts and

dismounts relevant to AutoCopy. Therefore, EMS must be configured and running on the

VTS server as described in the EMS chapter of the Virtual TapeServer Configuration

Guide.

• SSH must be configured on all VTS servers if you want to secure data when copying data

to remote locations (for Instant DR). Also, it must be configured on all VTS servers

involved in AutoCopy operations. SSH must be configured for Protocol 2 RSA or DSA

encryption using Public Key Identification. Public Key Identification requires that the

sender’s Public Key be installed in the specific authorized_keys file on the receiver VTS

system.

• It is very important that SSH communications flow though network connections from one

VTS system to another. A single gigabit connection is used to handle the SSH data

transfer and other communications between VTS systems. To prevent congestion, because

of the high volume of traffic that can flow over a connection used for Instant DR or

Autocopy, it is recommended that a completely separate gigabit subnet be used to connect

VTS systems. Network speeds of less than a gigabit are not recommended. The ProLiant

servers do not support speeds of greater than one gigabit.

• For AutoCopy, the source and target servers must have the same software version

installed.

After completing the procedures in this chapter, refer to the Virtual TapeServer Configuration

Guide for instructions on using the Data Replication feature to import and export virtual

tapes.