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Backend I/O metrics - Amazon File Cache
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Backend I/O metrics

The following metrics report information on read and write operations between the cache and its linked data repository. The metric takes one dimension (FileCacheId) and is published into the AWS/FSx namespace in CloudWatch.

Metric Description

RepositoryReadSuccess

The rates of files being read into the cache from its linked data repository.

RepositoryReadFailure

The rate of files failing to be read into the cache from its linked data repositories.

If you observe a high rate of read failures, check if any data repository association (DRA) is unreachable or misconfigured, and if the link between your VPC and an on-premises data store is saturated. If the link is not saturated, you can create a larger cache.

RepositoryWriteSuccess

The rate of files being written from the cache to its linked data repositories.

RepositoryMetadataReadSuccess

Understand the rate at which the workload is triggering the loading of file and directory metadata into the cache.

RepositoryMetadataReadFail

The rate of file and directory metadata failing to be read into the cache from its linked data repositories.

If you have high metadata read failures, check the connectivity to the linked data repository and share the workload.

RepositoryMetadataReadNotFound

The rate at which cache is looking up the data repository for paths that don't exist.

RepositoryOperationsInProgress

The number of read and write operations (including metadata operations) on data repositories that are in progress.

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