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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 7.68TB |
| 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 |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 14016 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1800 MB/s |
| Random Read IOPS | 450000 |
| Random Write IOPS | 70000 |
| Average Latency | 130 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT7T6HMLA |
|---|
The Samsung PM1643a MZILT7T6HALA-000C3 is a strong fit for mixed enterprise database and virtualization tiers, pairing 7.68TB of capacity with 12Gb/s SAS, up to 2100/1800 MB/s, 450,000/70,000 IOPS, and 14,016 TBW from Samsung 3-bit V-NAND in a 1 DWPD class. Compared with the earlier MZILT7T6HMLA, this PM1643a generation delivers a more current platform with stronger sustained performance-and-endurance density on the same SAS infrastructure, making it the better drop-in upgrade for scaling capacity without changing your backplane.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZILT7T6HALA-000C3 is designed to sustain full-drive writes every day across its warranty period, which is more than sufficient for typical enterprise boot, application, and mixed-read workloads. In practical terms, under normal system-disk or general server usage, this level of endurance supports many years of stable operation with substantial write headroom, giving procurement teams confidence in long-term deployment. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protects metadata integrity if power is suddenly interrupted. Its UBER rating of 1.0E-17, together with a 2 million hour MTBF, reflects a very low uncorrectable bit error rate and strong overall dependability for business-critical environments.
1. The SAS interface ensures seamless drop-in compatibility with mainstream enterprise storage backplanes while providing the dual-port reliability and service continuity required in mission-critical servers.
2. Its strong sequential read capability accelerates large-block workloads such as database backup, media streaming, and analytics scans, helping reduce data access bottlenecks in shared storage environments.
3. The high random read performance enables faster response for virtualization, OLTP databases, and read-heavy cloud applications where many small transactions must be served simultaneously.
4. Rated for steady daily full-drive writes across the warranty period, it is well suited for mixed-use enterprise deployments that need predictable endurance without overpaying for extreme write-optimized media.
5. Built on Samsung V-NAND with low typical latency, the drive delivers a balanced combination of flash density, consistent QoS, and quick access times that supports responsive enterprise application performance.
Lower capacity reference: 3.84TB Higher capacity reference: 15.36TB At 7.68TB, this SSD sits in the sweet spot of the series. Compared with the 3.84TB model, it offers much better headroom for growth, longer refresh cycles, and denser storage per drive without changing the expected enterprise performance profile. Compared with the 15.36TB version, it delivers a more balanced acquisition cost, lower overprovisioning risk, and easier budget control while keeping throughput and IOPS in the same class. It is well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 60 to 80 virtual machines.
Q: Is MZILT7T6HALA-000C3 suitable for a write-heavy database server?
A: It can support mixed or moderate write database workloads, but it is not ideal for highly write-heavy servers. With 1 DWPD, it is better suited for read-intensive or balanced enterprise applications.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated at 1 DWPD, meaning it can sustain one full 7.68TB drive write per day over its warranty period, consistent with its 14,016TB total endurance rating.
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 risks in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is preferred for high database performance and redundancy, while RAID 5 or RAID 6 is suitable for capacity-focused enterprise storage environments.