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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 960 GB |
| Usage Class | Enterprise / Data Center Read Intensive |
| Host Interface | SAS 12.0 Gbps |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3-bit MLC |
|---|---|
| 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 | MZILT960HAHP |
|---|
Compared with the previous-generation MZILT960HAHP, the Samsung PM1643 (MZILT960HAHQ0D3) brings a clear generational step forward with a 12.0 Gbps SAS interface, up to 2100/1000 MB/s sequential performance, and 380,000/40,000 IOPS, delivering higher storage density and faster response for enterprise arrays. Its 960 GB capacity, 1 DWPD rating, 1752 TBW endurance, and Samsung V-NAND 3-bit MLC make it a strong fit for latency-sensitive virtualization, OLTP databases, and read-heavy mixed workloads that need dependable SAS compatibility with balanced endurance.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZILT960HAHQ0D3 can sustain writing its full 960 GB capacity every day across its warranted service life, which is more than sufficient for typical enterprise boot, system, and read-heavy application workloads. In practical terms, under normal OS, logging, and general server usage, this level of endurance supports long-term deployment with ample write margin and low concern about premature wear. 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 unclean shutdown issues. Its UBER of 1.0E-17 indicates an extremely low probability of unrecoverable bit errors, and together with a 2 million hour MTBF, it provides the dependability expected for business-critical storage environments.
1. The SAS 12.0 Gbps interface provides dual-port enterprise connectivity and stable shared-storage integration, making it well suited for mission-critical servers that demand high availability and predictable failover behavior.
2. With 2100 MB/s sequential read performance, this drive accelerates large-block data access, reducing backup, restore, analytics scan, and virtual machine boot times in data center workloads.
3. Delivering 380,000 K IOPS in random reads, it handles highly fragmented transactional access efficiently, helping databases and virtualized environments sustain fast response under heavy concurrency.
4. Rated at 1 DWPD, the endurance profile is optimized for read-centric enterprise deployments, giving operators a practical balance of lifespan, capacity efficiency, and total cost of ownership.
5. Built with Samsung V-NAND 3-bit MLC and a typical latency of 100 µs, the drive combines density with consistently quick media response, supporting smoother application performance in latency-sensitive business systems.
Lower capacity reference: 480 GB Higher capacity reference: 1.92 TB At 960 GB, this model sits in the sweet spot of the series. Compared with the 480 GB version, it offers much better capacity headroom for OS images, application binaries, logs, and working datasets, reducing early capacity pressure in enterprise deployments. Compared with the 1.92 TB option, it keeps acquisition cost and per-node storage budgeting under tighter control while delivering essentially the same mainstream enterprise performance profile. This makes 960 GB especially well suited for mid-scale virtualization clusters, such as hosting boot and utility volumes for roughly 40 to 60 business application instances.
Q: Is MZILT960HAHQ0D3 suitable for a write-heavy database server?
A: It can support mixed-use database workloads, but with 1 DWPD it is not ideal for highly write-heavy databases. For sustained intensive writes, we recommend a higher-endurance enterprise SSD.
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 about one full 960GB drive write per day during its warranty period. Its 1752TB TBW rating confirms solid endurance for enterprise use.
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, reducing corruption risk and improving reliability in servers, storage arrays, and business-critical applications.
Q: What RAID level is recommended for this SSD?
A: RAID recommendation depends on your priority. RAID 10 is preferred for high database performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused environments with acceptable write overhead.