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Lukas Bernert 055cc7b956 docs: state disk limits as per-size minimums, align burst copy (#50016)
## What kind of change does this PR introduce?

Docs update: states disk limits as per-size minimums and aligns burst
copy across pages. Follow-up to #49996 (compute descriptions).

Fixes PROD-658

## What is the current behavior?

- The disk limits table and surrounding prose describe a narrower set of
configurations than a compute size can run on
- Burst thresholds are inconsistent across pages (three different
variants), and one section contradicts itself
- Burst is described as CPU behavior, when the burst users observe is
disk IO

## What is the new behavior?

- `shared-data/compute-disk-limits.ts`: Medium baseline throughput
adjusted to 39 MB/s: the lowest value across configurations
- `compute-and-disk`: disk limits presented as minimums ("at least");
burst described as disk IO drawing on a disk IO budget; consistent
thresholds: burst available up to 2XL, baseline equals maximum from 8XL
- Troubleshooting guides (`exhaust-disk-io`,
`failed-to-retrieve-tables`, `interpreting-supabase-grafana-io-charts`)
aligned to the same threshold; `failed-to-retrieve-tables` keeps the
~30-minutes-per-day burst window with the corrected size range
- Section anchors unchanged

## Self-review

- Values verified against the AWS EBS-optimized performance data
(`describe-instance-types`) for every configuration per size; content
cross-checked with the internal runbooks (linked in PROD-658)
- `supa-mdx-lint`: no findings in changed files
- `pnpm build:guides-markdown` clean; generated `.md` exports show the
new values and prose
- All changed pages verified rendering in the local dev app
- `pnpm typecheck` passes (shared-data + docs)
- Note: `compute-disk-limits.ts` also feeds Studio (disk validation, IO
budget tooltips). The only value change (Medium 43 → 39 MB/s) surfaces
there as one chart tooltip label; conservative direction.


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **Documentation**
- Clarified the differences between shared and dedicated CPU resources.
- Updated disk I/O guidance to explain baseline and burst limits as
minimums.
- Documented disk I/O bursting for compute sizes up to 2XL, including
expected duration and limitations.
- Clarified that 8XL and larger compute sizes have consistent
performance without burst capacity.
- Updated the documented baseline throughput for medium compute
resources.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-09-17 12:26:45 +02:00
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2026-08-03 21:14:50 +07:00
2026-08-03 21:14:50 +07:00