Why Availability Index ZERO

When I check server monitoring section via Admin Client, it displays Availability Index as ZERO for few servers. Can some one explain what does that mean and what would be the consequences.

I checked Show Task for one of the server as below

COMMAND SENT: sh ta

  Task                 Description

Database Server Perform console commands

Database Server Listen for connect requests on TCPIP

Database Server Load Monitor is idle

Database Server Database Directory Manager Cache Refresher is idle

Database Server Organization Name Cache Refresher is idle

Database Server Log Purge Task is idle

Database Server Idle task

Database Server Idle task

Database Server Idle task

Database Server Perform Database Cache maintenance

Database Server Idle task

Database Server Idle task

Database Server Idle task

Database Server Idle task

Database Server Idle task

Database Server Idle task

Database Server Idle task

Database Server Idle task

Database Server Idle task

Database Server Recovery Manager Checkpoint Thread

Database Server Recovery Manager DB Flushing Thread

Database Server Idle task

Database Server Shutdown Monitor

Database Server Process Monitor

Agent Manager Executive ‘2’: Idle

MT Collector Idle (next collection in 630 secs, interval is 900 secs)

Router Idle

Admin Process Idle

Admin Process Idle

Admin Process Idle

Admin Process Idle

DIIOP Server Listen for connect requests on TCP Port:63148

DIIOP Server Utility task

HTTP Server Listen for connect requests on TCP Port:80

Agent Manager Executive ‘1’: Idle

Process Monitor Idle

Rooms and Resources Idle

DIIOP Server Control task

Calendar Connector Idle

Agent Manager Idle

Admin Process Idle

Schedule Manager Idle

Directory Indexer Idle

Indexer Idle

Replicator Idle

Event Monitor Idle

Subject: see here

https://www-304.ibm.com/support/docview.wss?rs=463&uid=swg21164405