docs(capacity): DriveRole::Cold is FROZEN storage, never the per-token streaming tier (#302 slice 0) - #2115
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…n streaming tier (#302 slice 0) BigMama's measurement (2026-08-02): streaming an expert bank off a 130 MB/s HDD = 156-544 s/token = unservable. The prior doc claimed Cold is where 'MoE expert sets are paged into VRAM on demand' — conflating the frozen tier (source GGUFs, backups, unserved models) with the hot per-token-paged tier, which MUST be NVMe. The doc now states the boundary the NvmeServingTierPool (#302) governs: frozen until migrated up. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LoTjvf5j3Ez13g6k8mRkFo
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BigMama's measurement: 130 MB/s HDD expert streaming = 156–544 s/token = unservable. The doc conflated the frozen tier with the hot per-token-paged tier (NVMe, governed by the upcoming NvmeServingTierPool). Doc-only.
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https://claude.ai/code/session_01LoTjvf5j3Ez13g6k8mRkFo