User's Manual

on it, is essential for every production system (servers, specialized machines, and
so on). The backup procedure depends on many factors, such as the following:
• volume of data
• rate of data change
• recovery procedure
• time for backup and recovery
• response of the applications
There are many issues to consider for your backup process:
• Automatic backups can fail
• Certain other applications must be aware when the backup process is taking
place, to avoid conflicts and so on.
Create a backup policy that is built on the existing IT infrastructure. Refer to the
specifications (requirements) for the products involved for detailed information.
4. Keep a record of account maintenance and authorized users.
Keep a current list of the accounts that have access to the server and the account
privileges. If unauthorized users have access to the server, the entire server activity
can be compromised. Consequently, the business can be compromised (for
example, after confidential information is accessed).
5. Use specialized software for servers.
Consider installing specialized software to provide anti-virus protection,
maintenance tools, and firewall protection.
Firewall policies can be implemented in the entire network based on enterprise
firewalls. Where these are not available, a desktop solution is acceptable. Avaya
applications can use a range of ports and access types. Contact Avaya for
information about ports and access. Anti-virus and firewall software must be
included in the list of applications that require periodic updates.
Popular maintenance tools include ScanDisk and Defrag. After an unpredictable
event, scanning the disk can be performed automatically or manually. Database
applications are very sensitive to this fragmentation, leading to potential
performance bottlenecks or application errors, so Avaya recommends scheduling
regular defragmentation during off-peak hours.
6. Provide physical security for the system.
A power failure is one of the most common problems in a server environment, and
also one of the most dangerous, because power failures can cause data loss after
the system shuts down without closing data files and applications. An
Uninterruptible Power Supply (UPS) filters the current and, in the event of a general
power failure, provides the system with enough power that the applications can
close properly.
Preface
DECT Messenger Fundamentals March 2012 55