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AWS Storage Gateway User Guide
Monitoring Your Gateway-VTL
Monitoring the Upload Buffer
This section discusses how to monitor a gateway-VTL's upload buffer and how to create an alarm to get
notification when the buffer exceeds a specified threshold. This approach lets you proactively add buffer
storage to a gateway-VTL before the buffer fills completely and your storage application stops backing
up to AWS.
Item of Interest
How to Measure
Upload buffer usage
Use the UploadBufferPercentUsed, UploadBufferUsed, and UploadBufferFree metrics with the Average statistic. For example, use the UploadBufferUsed metric with the Average statistic to analyze the storage usage over
a time period.
The following procedures assume that you start in the Amazon CloudWatch console.
To measure upload buffer percent used
1.
2.
Select the StorageGateway: Gateway Metrics dimension, and find the gateway-VTL that you want
to work with.
Select the UploadBufferPercentUsed metric.
3.
4.
Select a Time Range value.
Select the Average statistic.
5.
Select a Period value of 5 minutes to match the default reporting time.
The resulting time-ordered set of data points contains the percent used of the upload buffer.
The following procedure shows you how to create an alarm using the Amazon CloudWatch console and
the Create Alarm Wizard. To learn more about alarms and thresholds, see Creating CloudWatch Alarms.
To set an upper threshold alarm for a gateway-VTL's upload buffer
1.
Start the Create Alarm Wizard.
a.
b.
2.
In the Amazon CloudWatch console, click the Alarms link in the Navigation pane.
In the Your CloudWatch Alarms pane, click Create Alarm.
Specify a metric for your alarm.
a.
b.
In the SELECT METRIC page of the Create Alarm Wizard, select the
AWS/StorageGateway:GatewayId,GatewayName dimension and find the gateway-VTL that
you want to work with.
Select the UploadBufferPercentUsed metric. Use the Average statistic and a period of 5
minutes.
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