Summary of EFS CloudWatch Metrics

Here's a breakdown of the key EFS CloudWatch metrics discussed in the training, along with their significance:

Metrics

• PercentIOLimit
  • Indicates how close a General Purpose EFS file system is to its I/O limit.
  • High values (close to 100%) suggest considering Max I/O mode for increased I/O capacity.
  • Important Note: Switching to Max I/O requires creating a new file system and migrating data.
• BurstCreditBalance
  • Tracks available burst credits for General Purpose EFS file systems.
  • When throughput reaches 100%, burst credits are used.
  • A balance of zero means you'll need to wait for credits to replenish.

• StorageBytes
  • Represents the file system's size in bytes.
  • Updated every 15 minutes.
  • Includes dimensions for Standard and Infrequent Access (IA) storage classes, as well as a total value.

How to Access Monitoring Metrics

1. Navigate to your EFS file system in the AWS console.
2. Click on the "Monitoring" tab.
3. View key metrics including:
   • Throughput utilization
   • IOPS by type
   • Throughput by type
   • Percent IO limit
   • Client connections
   • Storage usage

Additional Notes

• Metrics can be viewed as time series or single values for real-time insights.
• More detailed metrics are available within CloudWatch