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.
المواصفات الفنية
| معامل | تخصيص |
|---|---|
| سعة | 4تيرابايت (also: 1تيرابايت, 2تيرابايت) |
| عامل الشكل | م.2 2280 (80مم) |
| Interface | PCIe 4.0 x4, NVME 2.0 |
| NAND Type | Samsung V-NAND V8 (236-layer 3D TLC) |
| مراقب | Samsung Pascal (in-house, 8nm process, nickel-coated heat spreader) |
| DRAM Cache | 4 GB LPDDR4 (1 GB per 1 TB of NAND) |
| Sequential Read | يصل إلى 7,450 ميغابايت/ق |
| Sequential Write | يصل إلى 6,900 ميغابايت/ق |
| Random Read (4K, QD32) | Up to 1,600K IOPS |
| Random Write (4K, QD32) | Up to 1,550K IOPS |
| Endurance | 2,400 TBW (4TB model), ~0.33 DWPD equivalent over 5 years |
| MTBF | 1,500,000 ساعات |
| قوة (Idle / Avg Read / Avg Write / الأعلى) | 0.055دبليو / 5.5دبليو / 6.3دبليو / 7.8دبليو |
| Thermal Throttling | Dynamic Thermal Guard — throttles at 82C. Nickel-coated controller spreads heat. |
| حماية | AES-256 hardware encryption, TCG Opal 2.0, IEEE 1667, Microsoft eDrive |
| Physical | 80.15 x 22.15 x 2.38 مم (م.2 2280), ~9g |
| Temperature | 0C to 70C |
| ضمان | 5-year limited (manufacturer), 2,400 TBW limit |
Consumer SSD in a Server? When It Makes Sense (and When It Does Not)
| Scenario | 990 PRO 4TB | Enterprise SSD (PM9A3 3.84TB) | Verdict |
|---|---|---|---|
| Read-heavy cache (90+ percent reads, low write volume) | 7,450 ميغابايت/ق, 1,600K IOPS, $300 | 6,800 ميغابايت/ق, 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) | 4تيرابايت, ~$75/TB. Overkill for boot but cheap enough. | 3.84تيرابايت, ~$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 | Enterprise 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 |
Compatibility
م.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.
Source Through Xincuan
Factory-direct pricing on Samsung 990 PRO. 3-year warranty, global shipping.
