• Aggregate nonnegative disk-image sizes into image count, total terabytes, and average terabytes per image.
• Apply the same explicit rule consistently during ingest, quality control, reporting, or preservation planning.
• Expose records that need human review without silently rewriting the source data.

TB is treated exactly as the numeric unit supplied; this tool does not convert decimal TB to binary TiB.^[1]

• All entries must use the same capacity convention and represent distinct images; sparse allocation, compression, and replicas are not inferred.
• Preserve the original value and record the rule version when using this result in an archival workflow.

• Annual Report Output Metrics Rollup Aggregator

  Use Annual Report Output Metrics Rollup Aggregator to aggregate periodic archival-program metrics into count, total, arithmetic mean, minimum, and maximum for annual reporting. Choose this tool when you need to aggregate nonnegative disk-image sizes into image count, total terabytes, and average terabytes per image.

• Duplicate File Hash Set Deduplication Savings MB

  Use Duplicate File Hash Set Deduplication Savings MB to calculate hash-deduplication storage savings in megabytes and as a percentage of the original payload. Choose this tool when you need to aggregate nonnegative disk-image sizes into image count, total terabytes, and average terabytes per image.

• Annual Report Output Metrics Rollup Aggregator

  Roll up periodic output metrics such as quarterly accessions or reference counts into a count, total, mean, minimum and maximum for annual reporting.

• Duplicate File Hash Set Deduplication Savings MB Calculator

  Quantify deduplication savings in megabytes and percent from the total accession size and the size remaining after hash-based duplicate removal.

• Email Archive Message Count per Account Summator

  Sum per-account email message counts across an archived mailbox corpus and report the account total and mean messages per account.