Server Xinchuan | Fornitore di hardware per server aziendali
Five Myths About Enterprise NVMe SSDs — Busted
Mito #1: “NVMe SSDs burn out in a year under database workloads.” Reality: A modern enterprise NVMe drive rated at 1 DWPD writes its full capacity every single day for five years before hitting its endurance limit. The Samsung PM9A3 7.68TB at 1 DWPD means 7.68TB of writes per day, every day, per 1,825 days. If your database writes more than 7.68TB per day to a single drive, you have a logging problem, not a drive endurance problem.
Mito #2: “PCIe 4.0 is obsolete now that Gen5 is here.” Reality: PCIe 5.0 raddoppia la larghezza di banda per corsia da 16 GT/s to 32 GT/s, but most enterprise workloads saturate neither. The PM9A3’s 6,800 MB/s sequential read speed is limited by the NAND controller, not the PCIe bus. A Gen5 drive with the same NAND would deliver the same throughput. Gen5 matters for drives pushing 12 GB/s+ — and those do not exist in volume at enterprise price points in 2026.
Mito #3: “You need 3 DWPD for database workloads.” Reality: Most OLTP databases write 0.2-0.5 DWPD. 3 DWPD drives are for write caching, Registrazione OLTP, and journaling — not the data volume itself. Buying 3 DWPD for a 0.3 DWPD workload wastes 30-50% of the drive budget. The PM9A3’s 1 DWPD rating handles general-purpose databases, virtualizzazione, and mixed-use workloads comfortably.
Mito #4: “All 7.68TB SSDs are created equal.” Reality: The PM9A3 uses Samsung V-NAND V6 TLC with a purpose-built enterprise controller featuring end-to-end data protection, power-loss protection capacitors, and a DRAM cache (not DRAM-less). Budget enterprise drives often skip the DRAM cache and power-loss capacitors to hit a price point — the PM9A3 does not.
Mito #5: “U.2 is a dead form factor.” Reality: E3.S is the future, but U.2 is the present. Every current-generation server from Dell (R660, R760, R770), xFusione, and Lenovo supports U.2 NVMe natively. U.2 drives are backward-compatible with existing SAS/SATA backplanes (via tri-mode controllers), meaning you can deploy them in servers purchased today and migrate them to E3.S platforms when your next refresh cycle arrives.
Specifiche tecniche
| Parametro | Specifica |
|---|---|
| Capacità | 7.68tubercolosi (also available: 1.92tubercolosi, 3.84tubercolosi, 15.36tubercolosi) |
| Fattore di forma | 2.5-pollici U.2 (15mm) |
| Interfaccia | PCIe 4.0 x4, Nvme 1.4 |
| Tipo NAND | Samsung V-NAND V6 TLC (Triple-Level Cell) |
| Controllore | Samsung Elpis enterprise controller with DRAM cache |
| Lettura sequenziale | Fino a 6,800 Mb/s |
| Scrittura sequenziale | Fino a 4,000 Mb/s |
| Lettura casuale (4K, QD256) | Fino a 1.000.000 IOPS |
| Scrittura casuale (4K, QD256) | Fino a 180.000 IOPS |
| Resistenza | 1 DWPD (5 anni), 14,016 TBW total |
| MTBF | 2,000,000 ore |
| Uncorrectable Bit Error Rate | 1 sector per 10^17 bits read |
| Energia (Oziare / Active Read / Active Write) | 2.5W / 10W / 14W |
| Protezione dalla perdita di potenza | Supportato da condensatore, full data-at-rest and in-flight protection |
| End-to-End Data Protection | SÌ (T10 DIF/DIX support) |
| Hardware Encryption | AES 256-bit, Opale del GCC 2.0, IEEE 1667 |
| Dimensioni fisiche | 100.20 X 69.85 X 15.00 mm, 140G |
| Temperatura operativa | 0° C a 70 ° C. |
| Garanzia | 5-anno limitato (produttore) |
Piattaforme compatibili
Compatibile con tutti i server Dell PowerEdge con backplane U.2 NVMe (R650, R660, R750, R760, R770, R7715, R860, R960), xFusion FusionServer V7 series, Lenovo ThinkSystem V3/V4, and any server with U.2 (SFF-8639) NVMe connectivity. Funziona con PERC H755N, H965i NVMe RAID, o passthrough PCIe diretto tramite controller tri-mode.
Supported Operating Systems
VMware ESXi 7.0 U3+, 8.0+ | WindowsServer 2019, 2022, 2025 | REL 8.6+, 9.X | SLES 15 SP4+ | Ubuntu 20.04 LTS, 22.04 LTS, 24.04 LTS. Standard NVMe driver (in-box) for all listed OSes — no vendor-specific driver installation required.
Who Should Look Elsewhere
If your workload writes more than 7.68TB/day sustained to a single drive, step up to a 3 DWPD model. If you need sub-50 microsecond latency for HFT or real-time systems, look at SCM (Memoria della classe di archiviazione) or Optane alternatives. If you have an existing E3.S-only backplane (R470, R670), this U.2 drive requires a converter — budget for the adapter or choose an E3.S-native SSD.
Fonte attraverso Xincuan
Prezzi diretti dal produttore sull'intera gamma di capacità PM9A3. 3-anno di garanzia, spedizione globale, and free storage architecture consultation. Prezzo a volume disponibile per 10+ azionamenti.
