Specifications

Installation and Configuration
Before Configuring Your DataKeeper Resources
The following topics contain information for consideration before beginning to create and administer
your DataKeeper resources. They also describethe three typesof DataKeeper resources. Please
refer to the LifeKeeper Configuration section forinstructions on configuring LifeKeeper Core resource
hierarchies.
Hardware and Software Requirements
Your LifeKeeper configuration should meet the following requirements prior to the installation of
SteelEye DataKeeper.
Hardware Requirements
l Servers - Two or more LifeKeeper for Linux supported servers.
l IP Network Interface Cards - Each server requires at least one network interface card.
Remember, however, that a LifeKeeper cluster requires two communication paths; two
separate LAN-based communication paths using dual independent sub-nets are
recommended, and at least one of these should be configured as a private network. However
using a combination of TCP and TTY is also supported.
Note: Due to the nature of software mirroring, network traffic between servers can be heavy.
Therefore, it is recommended that you implement a separate private network for your SteelEye
DataKeeper devices which may require additional network interface cards on each server.
l Disks or Partitions - Disks or partitions on the primary and backup servers that will act as the
source and target disks or partitions. The target disks or partitions must be at least as large as
the source disk or partition.
Note: With the release of SteelEye Data Replication 7.1.1, it became possible to replicate an
entire disk, one that has not been partitioned (i.e. /dev/sdd). Previous versions of SteelEye
Data Replication required that a disk be partitioned (even if it was a single large partition; i.e.
/dev/sdd1) before it could be replicated. SteelEye Data Replication 7.1.1 removed that
restriction.
SteelEye Protection Suite for Linux265