# ESS Changes in Release 14.0

This chapter identifies features and functionality added to, modified for, or deprecated from 14.0 External Storage Server (ESS) software releases.

Topic covered in this chapter is:

- ESS Feature Changes as of June 29, 2012

IMPORTANT:

Enhancements to SNMP MIB in release 14.0 are located in the SNMP MIB Changes chapter.

ESS Feature Changes as of June 29, 2012

This section provides information on ESS feature changes in release 14.0.

IMPORTANT:

For more information regarding features in this section, refer to the External Storage Server Installation and Administration Guide for this release.

New ESS Features

This section identifies new Enhanced Storage Server (ESS) features available in release 14.0.

RHEL OS Support for ESS

The ESS is now supported on selected Cisco UCS servers (non-NEBS) and Sun Netra Servers (NEBS) running the custom Cisco MITG Red Hat Enterprise Linux (RHEL) v5.5 operating system (OS).

For detailed server specifications and external storage requirements for stand-alone and cluster deployment for the ESS, refer the External Storage System Overview chapter of the External Storage Server Installation and Administration Guide. For RHEL installation information, refer to the Cisco MITG RHEL v5.5 OS Application Note.

IMPORTANT:

The Cisco MITG RHEL v5.5 OS is a custom image that contains only those software packages required to support compatible Cisco MITG external software applications. Users must not install any other applications on servers running the Cisco MITG v5.5 OS. For detailed software compatibility information, refer to the Cisco MITG RHEL v5.5 OS Application Note.

High Availability Support using the ESS Cluster Setup

Two ESS nodes can now be configured as part of a redundant High Availability failover cluster.

The Symantec Veritas cluster (v5.1) software is supported on both Sun Netra Servers and Cisco UCS Servers using RHEL.

For detailed configuration information, refer the Veritas Cluster Installation and Management chapter of the External Storage Server Installation and Administration Guide.

Modified ESS Features

This section identifies ESS features modified in release 14.0. There are two kinds of modified features: enhancements and behavior changes. Enhancements are feature changes based on customer change requests. Behavior changes are feature changes that modify an existing behavior and may result from software error corrections (bug fixes).

Increase in the ESS Log File Size

The ESS creates separate log files for each ESS process. From this release onwards, the log file size of each file is increased from 5 MB to 50 MB.

New File Format for xDR File Naming

From this release onwards, a new file format named STR is introduced to set the xDR source files during the ESS installation.

For more information, refer the External Storage Server Installation and Administration Guide.

New Option for the ./serv Script Utility

From this release onwards, a new option hoststatus is introduced for the serv shell script utility to display the current status of each source and destination host.

For more information on using the shell script utility, refer the ESS Maintenance and Troubleshooting chapter of the External Storage Server Installation and Administration Guide.