Azure Blob Storage (Storage Accounts) SLAMicrosoft Azure · Storage · Microsoft Azure · Storage

• Hot / Transaction Optimized, LRS/ZRS/GRS/GZRS (reads and writes), RA-GRS/RA-GZRS writesStorage accounts in the Hot access tier99.9%

  Monthly uptime below, credit of the bill

  1. Below 99.9%10%
  2. Below 99%25%
• Hot / Transaction Optimized, RA-GRS and RA-GZRS read requestsRead requests to read-access geo-redundant accounts (with retry against the secondary region)99.99%

  Monthly uptime below, credit of the bill

  1. Below 99.99%10%
  2. Below 99%25%
• Cool / Cold / Archive, write requests (all redundancy types)Storage in the Cool, Cold and Archive access tiers99%

  Monthly uptime below, credit of the bill

  1. Below 99%10%
  2. Below 98%25%

Measured

Uptime Percentage per 'Applicable Period': for metered pay-as-you-go services, the 30 days prior to and including the first day of the Incident; for other services, the calendar month. Uptime = 100% minus Average Error Rate (hourly Failed Storage Transactions / Total Storage Transactions).

Credit cap

Maximum published credit is 25% for storage; overall cap: Service Credits in any billing month will not exceed the monthly service fees for that Service or Service Resource in the Applicable Period

Claim window

Within 60 days of the Incident (Azure)

How to claim

Submit the claim to Microsoft customer support with incident description, time and duration of downtime, affected resource names, number/location of affected users and error descriptions

Maximum credit for Storage Accounts is 25% (no 100% tier). As printed in the September 2026 edition, Cool/Cold/Archive read requests show '< 99.9% 10%, < 98% 25%' for both RA-GRS/RA-GZRS and LRS/ZRS/GRS/GZRS. Failed transactions are defined by maximum processing times (e.g. 2 seconds per MB for PutBlob/GetBlob).