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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 | MZILS960HEHP-00007 |
|---|
The Samsung PM1643 (MZILT960HAHQ-000G3) delivers a strong generational step over the MZILS960HEHP-00007 by combining 12Gb/s SAS bandwidth with Samsung V-NAND 3D TLC to reach up to 2100/1000 MB/s and 380,000/40,000 IOPS, giving enterprise arrays higher throughput and faster response for mixed read-centric workloads. At 960 GB with 1 DWPD and 1752 TBW, it offers a better balance of usable endurance, density, and performance than its predecessor, making it a solid fit for virtualization clusters, database acceleration tiers, and mainstream server storage refreshes.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZILT960HAHQ-000G3 can sustain writing its full 960 GB capacity every day throughout its rated service life, which is well aligned with typical enterprise read-intensive and mixed-use workloads. In practical terms, for lighter real-world usage such as OS, boot, application, or infrastructure system-disk deployment, this endurance level provides long-term headroom and can support many years of stable operation with confidence. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and protects metadata integrity during unexpected power interruption, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17, together with a 2 million hour MTBF, reflects a very low uncorrectable bit error rate and strong overall reliability expectations, making it a dependable choice for business-critical environments.
1. The SAS 12Gb/s interface, paired with strong sequential read bandwidth, enables reliable high-speed data streaming for database backups, analytics scans, and virtualized storage tiers in existing enterprise SAS environments.
2. With up to 380K random read IOPS, this drive can sustain heavy OLTP, VDI, and metadata-intensive workloads while keeping more users and virtual machines responsive during peak demand.
3. A 1 DWPD endurance rating makes it well suited for read-centric enterprise applications that need predictable service life and lower replacement risk without paying for unnecessary write-heavy overprovisioning.
4. Samsung V-NAND 3D TLC provides a balanced mix of capacity, power efficiency, and cost effectiveness, making it a practical choice for scaling enterprise storage without sacrificing mainstream data-center reliability.
5. A typical latency of 115 µs helps reduce storage wait time for transactional applications, improving tail-response consistency in latency-sensitive environments such as databases and virtualized servers.
Lower capacity reference: 480 GB Higher capacity reference: 1.92 TB The 960 GB model sits in the sweet spot of this SSD family. Compared with the 480 GB version, it gives meaningfully more headroom for OS images, application binaries, logs, and moderate data growth, reducing early capacity pressure. Compared with the 1.92 TB option, it delivers a better balance between acquisition cost, usable capacity, and the largely similar enterprise-class read/write and random IOPS profile of the series. In practice, 960 GB is well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for around 40 to 60 general-purpose virtual machines.
Q: Is MZILT960HAHQ-000G3 suitable for a write-heavy database server?
A: It can support mixed or moderate write database workloads, but for truly write-heavy servers, 1 DWPD may be limiting. We typically recommend higher-endurance enterprise SSDs for sustained intensive writes.
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 1752TBW rating confirms solid enterprise-class endurance.
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 outages, which is critical for enterprise storage reliability, database integrity, and cache protection.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for enterprise SSD deployments needing strong performance and redundancy. If capacity efficiency is more important, RAID 5 or RAID 6 can also be considered.