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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 7.68 TB |
| Usage Class | Enterprise/Read-Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 inch 15mm |
|---|
| NAND Flash | Samsung V-NAND TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 14016 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 50000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT7T6HALA-00007 |
|---|
Compared with the earlier MZILT7T6HALA-00007, the MZILT7T6HALA-00AH3 is the newer PM1643a revision, preserving the proven 7.68TB SAS 12Gb/s platform while delivering a more current qualification target for enterprise refresh cycles with up to 2,100/1,700 MB/s and 400K/50K IOPS. With 1 DWPD, 14,016 TBW, and Samsung V-NAND TLC, it is a strong fit for virtualized database, ERP, and mixed-read/write transactional tiers that need better sustained endurance and service-life confidence than older same-footprint SAS SSD deployments.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZILT7T6HALA-00AH3 is designed to handle writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical enterprise system, boot, and mixed-read workloads. In practical terms, under normal server operating conditions, this level of endurance supports long-term deployment with strong write headroom and can comfortably serve as a reliable system drive for many years. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protect metadata integrity if power is suddenly interrupted, reducing the risk of corruption and unplanned recovery events. Its UBER specification of 1.0E-17 indicates an extremely low unrecoverable bit error rate, supporting high data integrity expectations in business-critical environments, while the 2 million-hour MTBF further reinforces confidence in stable, continuous operation.
1. The SAS 12Gb/s interface paired with 2100 MB/s sequential read throughput enables fast, reliable bulk data access for database scans, backup acceleration, and enterprise storage arrays.
2. With 400,000 K IOPS in random reads, the drive can sustain highly concurrent transactional workloads, helping virtualized clusters and OLTP platforms respond faster under heavy user demand.
3. A 1 DWPD endurance rating gives IT teams the confidence to run steady daily write activity across the warranty period without overprovisioning for higher-cost mixed-use media.
4. Samsung V-NAND TLC provides a strong balance of capacity, power efficiency, and cost, making it well suited for mainstream enterprise deployments that need predictable performance at scale.
5. The 110 µs typical latency supports quicker application response times, reducing storage wait states in latency-sensitive environments such as real-time analytics and high-density VM hosting.
Lower-capacity reference: 3.84 TB Higher-capacity reference: 15.36 TB Capacity positioning analysis: In this series, the 7.68 TB model sits at the practical sweet spot. Compared with the 3.84 TB version, it gives much better headroom for data growth, denser VM placement, and longer refresh cycles without changing the familiar enterprise-class read/write and random IOPS profile. Compared with the 15.36 TB option, it usually delivers a more attractive cost-per-drive while avoiding overprovisioning for mid-scale deployments. It is especially well suited for shared storage pools, virtualization clusters, or database tiers supporting roughly 40 to 80 business applications.
Q: Is MZILT7T6HALA-00AH3 suitable for a write-heavy database server?
A: It can support moderate write-intensive database workloads, but with 1 DWPD it is not ideal for extremely write-heavy environments. It is better suited for mixed-use enterprise applications requiring solid endurance and low latency.
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 handle one full 7.68 TB drive write per day over its warranty period, aligned with its 14,016 TBW endurance specification.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP is critical because it helps preserve in-flight data and metadata during unexpected power failures, reducing corruption risk and improving enterprise storage reliability.
Q: What RAID level is recommended for this SSD?
A: For most enterprise deployments, RAID 10 is recommended for the best balance of performance, redundancy, and low latency. If capacity efficiency is more important, RAID 5 or RAID 6 may also be considered.