CoachA storage tier is a class of storage with its own price, access time and access charge (hot storage read in milliseconds, infrequent-access storage, archive storage restored in hours). A retention policy states how long each dataset is kept, in which tier at each age, and when it is deleted.
| layout | TB a day | PB a year | PB in 5 years | USD a year, tiered |
|---|---|---|---|---|
| raw capture, both lines | 37.95 | 9.56 | 47.8 | 1 989 000 |
| raw capture, one line | 18.97 | 4.78 | 23.9 | 995 000 |
| normalised | 17.42 | 4.39 | 21.9 | 913 000 |
| delta columns, zlib 6 | 3.70 | 0.93 | 4.67 | 194 000 |
pl_tickcap.economics.