OSS stores all data types including images, audio, video, documents, software packages, CSV, JSON, Parquet files, and backups. Each object has a storage class. The default is Standard. OSS also offers Infrequent Access (IA), Archive, Cold Archive, and Deep Cold Archive.
Selection factors
Consider these factors when selecting a storage class:
-
Access frequency: how often you read and write data. Ranges from frequent to rare.
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Retrieval time: how quickly data becomes accessible after a read request. Ranges from real-time to hours or days.
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Availability: the percentage of time the service is accessible. Ranges from 99.00% to 99.995%.
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Durability: the likelihood that stored data remains intact over time. Ranges from 99.999999999% (eleven 9s) to 99.9999999999% (twelve 9s).
Storage class comparison
The following table compares storage classes by access frequency, retrieval time, availability, and durability.
|
Storage class |
Access frequency |
Retrieval time |
Availability |
Durability |
|
Standard zone-redundant storage (ZRS) |
Frequently accessed |
Real-time access |
99.995% |
99.9999999999% (twelve 9's) |
|
Standard locally redundant storage (LRS) |
Frequently accessed |
Real-time access |
99.99% |
99.999999999% (eleven 9's) |
|
IA ZRS |
Infrequently accessed |
Real-time access |
99.50% |
99.9999999999% (twelve 9's) |
|
IA LRS |
Infrequently accessed |
Real-time access |
99.00% |
99.999999999% (eleven 9's) |
|
Archive ZRS |
Seldom accessed |
Real-time access or 1 minute |
99.50% |
99.9999999999% (twelve 9's) |
|
Archive LRS |
Seldom accessed |
Real-time access or 1 minute |
99.00% |
99.999999999% (eleven 9's) |
|
Cold Archive LRS |
Rarely accessed |
1 to 12 hours |
99.00% |
99.999999999% (eleven 9's) |
|
Deep Cold Archive LRS |
Rarely accessed |
12 or 48 hours |
99.00% |
99.999999999% (eleven 9's) |
Storage class pricing details are available on the OSS pricing page.