# Who does Seagate Technology pay? Who are its key suppliers?
Canonical: https://valuechain.wiki/seagate · Facet: suppliers · Updated: 2026-07-12T04:16:26.355926+00:00 · Source: ValueChain.wiki (cited money-flow graph)

**Citable summary**: Seagate Technology's confirmed suppliers/cost counterparties include 파이슨, HDD glass substrate (Hoya) plus 2 undisclosed/aggregate relationships. Per the valuechain.wiki graph: 4 cost edges, backed by 5 dated sources, 0 of them primary filings (as of 2026-07-12).

### 파이슨 (high)  → /phison.md
- note: SSD controller procurement: Phison controllers in mainstream SATA SSDs since 2017; co-designed X1 enterprise controller in 2022.
- [confirms] StorageNewsletter (EN, news, published 2022-08-12) https://www.storagenewsletter.com/2022/08/12/phison-x1-controller-customizable-ssd-platform-designed-in-partnership-with-seagate/: "Phison X1 controller: customizable SSD platform designed in partnership with Seagate."
- [confirms] Seagate (EN, ir, published 2022-04-06) https://www.seagate.com/news/news-archive/seagate-and-phison-broaden-partnership-to-bolster-portfolio-of-high-performance,-high-density-enterprise-class-solid-state-drives-optimized-to-lower-data-center-tco-pr-master/: "Seagate and Phison have collaborated on Seagate's mainstream SATA SSD products since 2017."

### HDD 유리기판 (호야) (mid)  → /hoya.md
- note: Sources glass substrates for Mozaic (HAMR) media from Hoya, the dominant glass-substrate supplier.
- [mentions] Tom's Hardware (EN, news, published 2025-05-15) https://www.tomshardware.com/news/hoya-hdd-22tb-24tb: "Seagate's Mozaic HAMR uses glass substrates; Hoya is the largest supplier."

### HAMR 증설·R&D (비공개) (low)
- note: HAMR 40/44TB capacity and R&D.
- [confirms] AlphaStreet (EN, research, published 2026-01-01) https://news.alphastreet.com/seagate-stx-has-an-ai-storage-capacity-story-bigger-than-the-old-pc-drive-label/: "HAMR 40/44TB capacity and R&D."

### 헤드·미디어·부품 (비공개) (low)
- note: Heads, media and mechanical parts.
- [confirms] Blocks and Files (EN, news, published 2025-07-30) https://blocksandfiles.com/2025/07/30/seagate-q4-2025/: "Heads, media and mechanical parts."

Reverse side: https://valuechain.wiki/seagate/customers.md · Ripple: https://valuechain.wiki/seagate/ripple.md

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Full node: https://valuechain.wiki/seagate.md · JSON: https://valuechain.wiki/seagate.json