Cisco Cisco Email Security Appliance X1070 Guia De Resolução De Problemas

Contributed by Nasir Shakour and Enrico Werner, Cisco TAC
Engineers.
Jun 16, 2014

Introduction
Disk I/O Utilization
     View the Statistics
     Disk I/O Utilization Gauge
     Disk I/O Utilization Statistics in Use

This document describes the meaning of the Disk I/O Utilization statistics for AsyncOS on the Cisco Email
Security Appliance (ESA).

This section provides an overview of the Disk I/O Utilization statistics on the ESA.

The Disk I/O Utilization statistics can be accessed on the ESA from both the GUI and the CLI: 

In order to view the Disk I/O Utilization statistics from the ESA GUI, navigate to Monitor > System
Overview.

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In order to view the statistics via the CLI, enter the status detail command.

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The Disk I/O Utilization gauge is a percentage of the highest usage that the system has seen since the last
reboot. This gauge does not display a reading against a scale of a known value. Rather, it displays the I/O
utilization that the system has seen thus far and scales against the maximum value since the last reboot. So, if
the gauge displays 100%, the system experiences the highest level of I/O utilization that is seen since boot
(which might not necessarily represent 100% of the physical Disk I/O of the entire system).

In a system that has only recently been booted and sees high loads, the Disk I/O Utilization gauge can reach
more than 100% as the scaling algorithm adjusts up the maximum. Over the long term, the Disk I/O
Utilization tends to smooth out, but also tends to be much lower than 100%, because system peaks are unusual
and tend to drive down the average Disk I/O Utilization statistics.

Unless your system enters into resource conservation mode, then you can safely ignore these statistics. If you
see that Disk I/O Utilization runs at or near 100% for long periods of time, it indicates one of these