VR2R-0459
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Procurement and Cooling Vendor Implications - Line hint:
589
Context Before
Source: CoolIT
Procurement and Cooling Vendor Implications
Evidence
The primary vendor implication of the updated cooling architecture and doubled power density relates to CDUs and the rack-to-CDU ratio. Today, a CDU can support around 10 GB200 racks. With a rack generating about 2x the heat, that ratio would need to decline unless CDU capacity increases, implying either more CDUs or higher-capacity CDUs. We believe most major operators expect to maintain a ratio of around 10 racks per CDU. As rack power density rises, this points to larger CDUs. Today, in-row CDUs offer cooling capacities up to roughly 2 MW, but we expect future facility CDUs to reach 3-6 MW. Delta currently leads in the CDU specialist segment, alongside Schneider Electric, Vertiv, and nVent. Foxconn and Quanta dominate the system integrator category.
Context After
Source: CoolIT
② Atomic Claim
- Epistemic Mode:
ASSERTED - Mapping Status:
COMPLETE
③ Semantic Frame
{
"frame_type": "NARY_RELATION",
"participants": [
{
"node": {
"id": "04_knowledge_base/Coolant Distribution Unit (CDU)",
"label": "CDU"
},
"role": "cooling_unit"
},
{
"node": {
"id": "04_knowledge_base/GB200",
"label": "GB200"
},
"role": "rack_platform"
}
],
"qualifiers": {
"condition_text": "around 10 racks per CDU",
"numeric_mentions": [
"10"
],
"temporal_mentions": [
"目前"
]
},
"relation_type": "CDU_SUPPORTS_GB200_RACKS"
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| cooling_unit | CDU | 04_knowledge_base/Coolant Distribution Unit (CDU) |
| rack_platform | GB200 | GB200 |
⑤ V2 Draft（需要修正時直接編輯）
Inline repair
只編輯以下三個 Draft 區塊。完成後將
review_action設為REQUEST_REPAIR，再手動執行 Repair Preview。
執行腳本前，Draft 不會寫入 Claim Store 或 Graph。
V2 Atomic Claim Draft
目前一台 CDU 大約可支援 10 個 GB200 racks。
V2 Semantic Frame Draft
{
"frame_type": "NARY_RELATION",
"participants": [
{
"node": {
"id": "04_knowledge_base/Coolant Distribution Unit (CDU)",
"label": "CDU"
},
"role": "cooling_unit"
},
{
"node": {
"id": "04_knowledge_base/GB200",
"label": "GB200"
},
"role": "rack_platform"
}
],
"qualifiers": {
"condition_text": "around 10 racks per CDU",
"numeric_mentions": [
"10"
],
"temporal_mentions": [
"目前"
]
},
"relation_type": "CDU_SUPPORTS_GB200_RACKS"
}V2 Revision Metadata Draft
{
"epistemic_mode": "ASSERTED",
"mapping_status": "COMPLETE"
}⑥ Human Review
請在 Properties 逐項確認：
- 原文 → Atomic Claim 是否忠實
- Atomic Claim → Semantic Frame 是否忠實
- Canonical Entity mapping 是否正確
- Epistemic mode 是否保留原文語氣
- 最後選擇
review_action
Review state
Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。