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The 4TB M.2 Drive That Turns a Single PCIe Slot Into a High-Speed Storage Volume
Your server has an empty PCIe slot. You do not need a GPU. You do not need another NIC. You need fast, local NVMe storage that does not consume a front-panel drive bay. The Samsung 990 PRO 4TB in an M.2-to-PCIe adapter card (Supermicro AOC-SLG3-2M2 or equivalent) delivers 7,450 MB/s sequential read and 1,600K random read IOPS from a single PCIe 3.0 x4 slot — enough throughput to saturate the adapter, enough capacity to host a dozen VMs on local storage.
技術仕様
| パラメータ | 仕様 |
|---|---|
| 容量 | 4結核 (また: 1結核, 2結核) |
| フォームファクタ | M.2 2280 (80んん) |
| インタフェース | PCIe 4.0 x4, NVMe 2.0 |
| NAND型 | Samsung V-NAND V8 (236-layer 3D TLC) |
| Controller | Samsung Pascal (in-house, 8nm process, nickel-coated heat spreader) |
| DRAM Cache | 4 GB LPDDR4 (1 GB per 1 TB of NAND) |
| シーケンシャルリード | まで 7,450 MB/s |
| シーケンシャルライト | まで 6,900 MB/s |
| ランダム読み取り (4K, QD32) | Up to 1,600K IOPS |
| ランダム書き込み (4K, QD32) | Up to 1,550K IOPS |
| 持久力 | 2,400 TBW (4TB model), ~0.33 DWPD equivalent over 5 年 |
| MTBF | 1,500,000 時間 |
| 力 (アイドル状態 / Avg Read / Avg Write / マックス) | 0.055W / 5.5W / 6.3W / 7.8W |
| Thermal Throttling | Dynamic Thermal Guard — throttles at 82C. Nickel-coated controller spreads heat. |
| 安全 | AES-256 hardware encryption, TCG オパール 2.0, IEEE 1667, Microsoft eDrive |
| 物理的な | 80.15 バツ 22.15 バツ 2.38 んん (M.2 2280), ~9g |
| 温度 | 0C to 70C |
| 保証 | 5-年限定 (メーカー), 2,400 TBW limit |
Consumer SSD in a Server? When It Makes Sense (and When It Does Not)
| Scenario | 990 PRO 4TB | エンタープライズSSD (PM9A3 3.84TB) | Verdict |
|---|---|---|---|
| Read-heavy cache (90+ percent reads, low write volume) | 7,450 MB/s, 1,600K IOPS, $300 | 6,800 MB/s, 1,000K IOPS, $450 | 990 PRO wins on price-performance |
| Write-heavy logging (500 GB writes per day) | 2,400 TBW total: exhausted in ~13 years at 500 GB/day | 14,016 TBW: exhausted in ~77 years | Enterprise SSD wins on endurance confidence |
| VMware boot volume (OS only, read-mostly) | 4結核, ~$75/TB. Overkill for boot but cheap enough. | 3.84結核, ~$117/TB | 990 PRO wins on cost per TB |
| Production database (mixed read-write, 2 DWPD) | Not rated for 2 DWPD sustained. 0.33 DWPD catastrophic. | 1 DWPD, enterprise data path protection | エンタープライズSSD. Never deploy consumer in production DB. |
| Edge server, 2-drive limit, cost-sensitive | 4TB NVMe boot+data in one M.2 slot | U.2 requires NVMe backplane. M.2 enterprise options are more expensive. | 990 PRO wins for edge cost sensitivity |
互換性
M.2 2280 NVMe PCIe 4.0 x4. Requires M.2 slot or M.2-to-PCIe adapter. Compatible with Supermicro AOC-SLG3-2M2, ASUS Hyper M.2, and any M.2 NVMe-capable motherboard or adapter. Dell servers with M.2 slots: R470, R670, R770 support M.2 natively on specific motherboard revisions. Older Dell servers require adapter card.
新川経由のソース
Factory-direct pricing on Samsung 990 PRO. 3-年保証, global shipping.
