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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 960 GB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3D 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 | 115 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT960HAHP-00007 |
|---|
Compared with the predecessor MZILT960HAHP-00007, the MZILT960HAHQAD4 PM1643 advances to Samsung V-NAND 3D TLC on the newer PM1643 platform, delivering up to 2,100/1,000 MB/s and 380,000/40,000 IOPS within the same 12Gb/s SAS form factor for stronger mixed-workload responsiveness. With 960 GB capacity, 1 DWPD, and 1,752 TBW, it is a more compelling choice than the prior generation for virtualization, OLTP, and read-centric database tiers that need higher usable bandwidth and consistent enterprise endurance without changing the SAS infrastructure.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZILT960HAHQAD4 can sustain writing its full 960 GB capacity every day throughout its rated service life, which is more than sufficient for typical enterprise boot, OS, and general application workloads. In practical terms, under normal system-disk usage patterns, this endurance level provides long-term operational headroom and can support many years of stable use without endurance-related concern. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and protects metadata integrity during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its enterprise-class UBER of 1.0E-17, together with a 2 million hour MTBF, indicates an extremely low probability of uncorrectable bit errors and strong overall dependability for business-critical environments.
1. The SAS 12Gb/s interface paired with strong sequential read performance enables fast bulk data movement, making it well suited for enterprise storage arrays, backup acceleration, and analytics workloads that stream large files.
2. Its 380,000 random read IOPS help databases and virtualized environments serve far more small-block requests in parallel, reducing application wait time during peak transaction periods.
3. A 1 DWPD endurance rating provides predictable day-after-day write capability, giving IT teams a balanced durability profile for mixed-use enterprise deployments without overbuying higher-endurance media.
4. Samsung V-NAND 3D TLC delivers an effective balance of density, power efficiency, and cost, allowing organizations to scale capacity economically while maintaining enterprise-class flash reliability.
5. The 115 µs typical latency supports consistently responsive storage behavior, which is critical for latency-sensitive applications such as OLTP systems, VM boot storms, and high-concurrency business services.
Lower capacity reference: 480 GB Higher capacity reference: 1.92 TB Capacity positioning analysis: The 960 GB model sits at the sweet spot in this enterprise SSD family. Compared with the 480 GB version, it offers much better headroom for OS images, application growth, logs, and data buffering, reducing the risk of early capacity pressure. Compared with the 1.92 TB option, it delivers a more balanced acquisition cost while keeping essentially the same mainstream enterprise read/write and random IOPS profile. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for around 40 to 60 business workloads.
Q: Is MZILT960HAHQAD4 suitable for a write-heavy database server?
A: MZILT960HAHQAD4 is better suited for mixed-use or read-intensive enterprise workloads. With 1 DWPD and 1752 TBW, it can support moderate database writes, but not very write-heavy environments.
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 960 GB drive write per day throughout its warranty period, within the specified endurance limit.
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 sudden power failure, which is critical for data integrity, consistency, and enterprise storage reliability.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is typically recommended for enterprise SSDs when both performance and redundancy matter. For capacity-focused deployments, RAID 5 or RAID 6 may also be considered, depending on workload.