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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 960GB |
| Usage Class | Enterprise |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3bit MLC (TLC) |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 1752 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1000 MB/s |
| Random Read IOPS | 380000 |
| Random Write IOPS | 40000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS960HEHP |
|---|
Compared with the previous-generation MZILS960HEHP, the PM1643 (MZ-ILT960A) brings a newer Samsung V-NAND architecture that delivers stronger 12Gb/s SAS performance—up to 2100/1000 MB/s and 380K/40K IOPS—for faster transaction processing and better VM density on existing enterprise backplanes. With 960GB capacity, 1 DWPD endurance, and 1,752 TBW, it is a well-balanced upgrade for mixed-read enterprise workloads that need higher sustained throughput and more consistent latency without moving off SAS.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZ-ILT960A can sustain about 960 GB of writes per day over a standard five-year endurance model, which is well beyond the write volume of most OS, boot, and application-drive workloads. In typical system-disk use, this means a very large endurance margin and supports long-term, worry-free deployment for servers, appliances, and industrial systems. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and protects metadata integrity if power is suddenly interrupted, reducing the risk of corruption and unclean shutdown damage. Its UBER of 1.0E-17 indicates an extremely low uncorrectable bit error rate, providing the data integrity level expected for business-critical storage, while the 2 million-hour MTBF further reinforces confidence in stable continuous operation.
1. The SAS 12Gb/s interface provides dual-port enterprise connectivity and dependable high-availability integration, making this drive a strong fit for mission-critical storage arrays and server backplanes.
2. With sequential reads up to 2100 MB/s, the drive accelerates large-block data access such as backup restoration, media streaming, and analytics dataset loading.
3. Delivering 380,000K random-read IOPS, it can sustain heavy concurrent transactions and metadata lookups for virtualization, databases, and read-intensive cloud workloads.
4. Rated at 1 DWPD, the SSD offers predictable endurance for mixed-use enterprise environments that need consistent daily rewrite capability without overprovisioning for extreme write workloads.
5. Built with Samsung V-NAND 3bit MLC (TLC) and a typical latency of 100 µs, it balances flash density with responsive QoS to support stable low-latency performance in business-critical applications.
Lower capacity reference: 480GB Higher capacity reference: 1.92TB In this series, the 960GB model sits at the sweet spot. Compared with the 480GB version, it gives much better space headroom for OS images, logs, hot data, and moderate application growth, reducing early capacity pressure. Compared with the 1.92TB version, it keeps nearly the same enterprise-class sequential and random I/O behavior while offering a more efficient cost-per-deployment balance. This makes 960GB especially suitable for mid-scale virtualization clusters, edge database nodes, or a storage pool designed to host around 40 to 60 mixed business application instances reliably.
Q: Is MZ-ILT960A suitable for a write-heavy database server?
A: MZ-ILT960A can support moderate write-intensive database workloads, but with 1 DWPD it is better suited for mixed-use or read-optimized environments rather than very write-heavy, high-endurance database servers.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated at 1 DWPD, meaning it can sustain one full 960GB drive write per day over its warranty period, with a total endurance rating of 1752 TBW.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP helps preserve in-flight data and metadata during unexpected outages, which is critical for maintaining data integrity and reducing corruption risk in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 1 or RAID 10 is preferred for databases and critical workloads, while RAID 5 or RAID 6 may suit capacity-focused environments.