Seagate
Seagate Cheetah NS ST3400755SSProduct 400 GB 3.5" SAS internal hard drive
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SAMSUNG
SAMSUNG MZ7LM960HCHP-00003 PM863 960GB 2.5" SATA enterprise SSD
A 2.5 inch SATA enterprise SSD with 960GB of MLC storage, sequential read up to 525 MBps and write up to 475 MBps, plus 99,000 random read IOPS
- Form Factor2.5"
- Capacity960GB
- Memory ComponentsMLC
- InterfaceSATA III
- ControllerSFF-8223
- Max Sequential ReadUp to 525 MBps
- Enterprise capacity of 960 GB stores large datasets
- SATA III interface delivers up to 525 MBps sequential read speed
- MLC NAND supports up to 99,000 random read IOPS for responsive access
- 5 million hour MTBF ensures long-term reliability in servers
- Low 1.3 W idle power reduces data centre energy costs
Samsung PM863 960 GB SATA enterprise SSD
This Samsung Data Center PM863 drive delivers 960 GB of MLC flash storage in a 2.5-inch SATA III form factor. It is built for servers and storage arrays that need consistent read performance and enterprise-grade endurance. The SFF-8223 controller manages sequential reads up to 525 MBps and sequential writes up to 475 MBps.
Suited for read-heavy server tiers.
The drive fits read-oriented workloads such as web serving, content delivery or virtual desktop infrastructure where random reads reach 99,000 IOPS. It is not a fit for workloads that demand sustained high random write IOPS beyond 18,000 or that require a PCIe interface for lower latency. Buyers needing higher write throughput or a different protocol should consider other models.
SATA III interface caps throughput at 525 MBps read
The single specification that decides fit is the SATA III link, which limits maximum sequential read to 525 MBps and sequential write to 475 MBps. If your application can saturate this bandwidth or needs the higher queue depth of a PCIe interface, this drive will become the bottleneck. Verify that your backplane and controller support SATA III before purchasing.
Highlights
- Enterprise capacity of 960 GB stores large datasets
- SATA III interface delivers up to 525 MBps sequential read speed
- MLC NAND supports up to 99,000 random read IOPS for responsive access
- 5 million hour MTBF ensures long-term reliability in servers
- Low 1.3 W idle power reduces data centre energy costs
Specifications
| Brand | SAMSUNG |
|---|---|
| Series | Data Center |
| Model | PM863 |
| Part Number | MZ7LM960HCHP-00003 |
| Form Factor | 2.5" |
| Capacity | 960GB |
| Memory Components | MLC |
| Interface | SATA III |
| Controller | SFF-8223 |
| Max Sequential Read | Up to 525 MBps |
| Max Sequential Write | Up to 475 MBps |
| 4KB Random Read | Up to 99,000 IOPS |
| 4KB Random Write | Up to 18,000 IOPS |
| MTBF | 1,500,000 hours |
| Power Consumption (Idle) | 1.3 Watt |
| Power Consumption (Active) | Write: 3.8 Watt Read: 2.9 Watt |
| Operating Temperature | 0°C ~ +70°C |
| Max Shock Resistance | 1500 G, duration 0.5 ms, Half Sine Wave |
| Max Vibration Resistance | 7 ~ 800 Hz, 3.08 Grms, 30 min/axis (X,Y,Z) |
| Shipping weight | 0.06 kg |
| Package size | 102 × 71 × 8 mm |
Questions about this item
Should I pick the 960GB PM863 or look for a larger capacity in this series?
The PM863 series is listed here with a 960GB capacity using MLC NAND; if you need more space you would have to select a different model or series.
What does the 525 MBps sequential read figure mean for my server workload?
Up to 525 MBps sequential read and 475 MBps sequential write are the peak rates the controller can sustain on the SATA III link; real-world throughput will depend on queue depth and the host controller.
How does the SATA III interface limit this drive in practice?
The drive uses a SATA III interface rated at 6 Gbps, so maximum sequential speeds are bounded by that link; the drive delivers up to 99,000 random read IOPS and 18,000 random write IOPS within that constraint.
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