User's Manual

Preface 59

3. Back up your data.

All computers eventually fail (hardware or software), and after servers

fail, the data stored on them is often lost. Keeping current backups

of the system, and data stored 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.

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).

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. Nortel applications can use a range of ports and access

types. Contact Nortel 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 Nortel recommends scheduling regular

defragmentation during off-peak hours.

6. Provide physical security for the system.

Nortel Communication Server 1000

DECT Messenger Fundamentals

NN43120-120 02.01

11 May 2009