| Chosen Payment Plan | ||
|---|---|---|
| Pre-Payment | Invoicing | |
| Form or Renew a Contract | of the contract amount | of the contract amount |
| Backup File Metadata | for a single slab* | for a single slab* |
| Restore File Metadata | for a single slab* | for a single slab* |
| Store File Metadata | for a single slab* per month | for a single slab* per month |
| Store Partial Slab Data | for one MiB** per month | for one MiB** per month |
| Repair a File | for a single slab* | for a single slab* |
*Files stored on Sia consist of one or more slabs. A slab is raw data that has been erasure-encoded into sector-sized shards. A sector is the minimum amount of data that can be uploaded to a single host at a time, and it equals to 4MiB.
Example: if you upload a 120MiB file to Sia with the default redundancy settings (10-of-30 shards), this file is split into 120/(4*10) = 3 slabs.
**Partial slabs are pieces of data that have not yet formed a complete slab. When upload packing is enabled, only complete slabs are uploaded to the network, leaving any incomplete slabs reside in the buffer until more data comes up.
The partial slab data size of any file, even as large as 1 TB, depends on the chosen redundancy settings and usually doesn't exceed 40 MiB.