Синькуань Сервер | Поставщик оборудования для корпоративных серверов
The SSD You Buy When You Need 3 DWPD Endurance But Cannot Justify the OEM Tax on Samsung or Micron
Enterprise SSD pricing follows a predictable pattern: Samsung and Micron command a 20-30 percent premium for the brand. Kingston delivers the same endurance tier, same form factor, and same NAND generation at a price point that reflects the savings of not maintaining a captive NAND fab. The DC1500M 7.68TB is a U.2 PCIe 3.0 x4 NVMe SSD rated at 3 DWPD — three full drive writes per day, every day, for five years. That is 42,048 TBW of endurance on a 7.68TB drive. For OLTP logging, write caching, and database tempdb volumes that burn through 1 DWPD drives in 18 months, the DC1500M is the drive that outlasts the server.
Технические характеристики
| Параметр | Спецификация |
|---|---|
| Емкость | 7.68ТБ (also: 960ГБ, 1.92ТБ, 3.84ТБ) |
| Фактор формы | 2.5-дюйм U.2 (15мм) |
| Интерфейс | PCIe 3.0 х4, NVMe 1.3 |
| Тип NAND | Kioxia 96-layer 3D TLC (BiCS FLASH) |
| Последовательное чтение (128K) | Вплоть до 3,200 МБ/с |
| Последовательная запись (128K) | Вплоть до 2,900 МБ/с |
| Случайное чтение (4K, QD256) | Up to 540K IOPS |
| Случайная запись (4K, QD256) | Up to 200K IOPS |
| Задержка (4K Random Read, QD1) | ~85 microseconds |
| Задержка (4K Random Write, QD1) | ~20 microseconds |
| Выносливость | 3 ДВПД (5 годы), 42,048 TBW (7.68TB model) |
| Среднее время безотказной работы | 2,000,000 часы |
| Власть (Праздный / Avg Read / Avg Write / Макс) | 5Вт / 10Вт / 14Вт / 18Вт |
| Защита от потери мощности | Capacitor-backed, full in-flight data protection |
| End-to-End Data Protection | PLP, ЕСС, T10 DIF |
| Безопасность | TCG Opal 2.0, AES-256 hardware encryption, instant secure erase |
| Physical | 100.45 Икс 69.85 Икс 15.00 мм |
| Температура | 0C to 70C |
| Гарантия | 5-year limited (manufacturer) |
3 DWPD vs 1 DWPD — The Endurance Gap That Matters
| Рабочая нагрузка | Typical DWPD | 1 DWPD Drive (5-year expected life) | 3 DWPD Drive (5-year expected life) |
|---|---|---|---|
| VMware boot volume (OS only, read-mostly) | ~0.05-0.1 | 50+ годы (effectively forever) | Massively overprovisioned. Buy 1 ДВПД. |
| General-purpose database data volume | ~0.3-0.5 | 10-16 годы. 1 DWPD is fine. | Overkill. Save the budget for 1 ДВПД. |
| OLTP write-ahead log (WAL) / transaction log | ~1.5-2.5 | 2-3 годы. Drive will wear out within warranty period. | 8-16 годы. 3 DWPD is correct. |
| Write cache tier (ZFS SLOG, Ceph WAL/DB) | ~2-5 | 1-2.5 годы. Drive will wear out well before warranty expires. | 3-7 годы. 3 DWPD recommended, monitor actual wear. |
| Database tempdb (SQL Server tempdb, Oracle TEMP) | ~3-10 | 6 months to 1.5 годы. Do not deploy 1 DWPD here. | 1.5-5 годы. Acceptable with monitoring. Monitor TBW monthly. |
PCIe 3.0 x4 — Still Enough for 3 DWPD Workloads in 2026
The DC1500M uses PCIe 3.0 х4, not Gen4 or Gen5. At 3,200 MB/s sequential and 540K random read IOPS, the interface is not the bottleneck for the workloads this drive targets. OLTP transaction logs, ZFS SLOG devices, and write caches are latency-sensitive, not throughput-sensitive — and the DC1500M’s 85 microsecond read latency is competitive with Gen4 drives. The price savings from the PCIe 3.0 controller generation are passed through to the drive cost. If your workload is IOPS-bound at QD1 (low queue depth, latency-sensitive), PCIe 3.0 x4 is not the bottleneck. If your workload is throughput-bound at QD256 (high queue depth, bandwidth-sensitive), consider a Gen4 drive instead.
Compatible Platforms
U.2 NVMe, compatible with Dell R650/R660/R750/R760/R770, xFusion V7, Lenovo V3/V4. Works with PERC H755N, H965i, or direct PCIe passthrough.
Source Through Xincuan
Factory-direct pricing on the full DC1500M range. 3-год гарантии, global shipping.
