Encoded host-write duty in the stated storage BOM case
about 840 TB/dayderived
| Value kind | derived — Derived values are guide calculations; their result is only as fixed as the stated inputs, scope, and method. |
|---|---|
| Scope | Worked-example value, not a measurement: two concurrent jobs on 1,024 GPUs, 1.54 TB unique checkpoint state every 270 s, 16.8 TB/day scratch writes, EC 4+2 (1.5x) and 1.1x storage-layer maintenance writes. The duty scales with checkpoint bytes and frequency; rerun it with your own. |
| As of | 2026-09 |
| Source | Worked example in Chapter 9.8 (storage BOM case; assumptions stated in the chapter) |
| Derivation | [(1.4+.14) × 86400/270 + 16.8] × 1.5 × 1.1 = 840.84 TB/day. Internal NAND amplification is not applied to the host-DWPD rating. |
| Review | checking…review by 2027-03-05 · standard cadence |
| Recorded changes | last 2026-10-19 · 2 revisions tracked |
| Claim id | guide2-t23-storage-host-writes |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.