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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 960 GB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | TLC V-NAND |
|---|---|
| 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 | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT960HAHQ-000H3 |
|---|
Compared with the previous-generation MZILT960HAHQ-000H3, the PM1643a MZILT960HBHQ-00AH3 is a clear generational step forward for mainstream enterprise SAS deployments, combining TLC V-NAND efficiency with up to 2,100/1,000 MB/s sequential performance and 380K/40K IOPS to deliver higher usable performance density in the same 960 GB class. Its 1 DWPD rating and 1,752 TBW make it a stronger fit for virtualization clusters, boot-from-SAN, and read-optimized database tiers that need dependable 12Gb/s SAS compatibility, predictable endurance, and lower cost per GB than higher-write enterprise SSDs.
With an endurance rating of 1,752 TBW, this 960GB SSD can sustain about 480GB of host writes per day for 10 years, which is well above the write volume of a typical OS boot drive or read-heavy business application. In practical terms, for system-disk, server-boot, and general enterprise workloads, this level of endurance provides strong long-term write headroom and dependable service life. This model also includes power loss protection (PLP), which helps preserve in-flight data and mapping tables during an unexpected power interruption, reducing the risk of corruption and unplanned recovery events. Its enterprise-class UBER of 1.0E-17 means an extremely low uncorrectable bit error rate, and together with a 2 million hour MTBF, it supports the high data integrity and operational stability procurement teams expect from datacenter SSDs.
1. The SAS interface ensures seamless integration with dual-controller enterprise storage arrays, delivering high availability and predictable performance in mission-critical datacenters.
2. Its strong sequential read capability accelerates backups, analytics scans, and large dataset retrieval, helping reduce batch-processing windows.
3. The high random read throughput makes it well suited for virtualization, OLTP databases, and metadata-heavy workloads where fast access to small blocks drives user responsiveness.
4. A one-drive-write-per-day endurance rating provides a balanced fit for read-intensive enterprise applications, supporting reliable long-term operation without overpaying for unnecessary write headroom.
5. TLC V-NAND combined with low typical latency gives organizations a cost-efficient flash platform that maintains consistent response times for latency-sensitive business services.
Lower-capacity reference: 480 GB Higher-capacity reference: 1.92 TB Capacity positioning analysis: In this series, the 960 GB model sits in the sweet spot between entry capacity and higher-density deployment. Compared with the 480 GB version, it gives much better headroom for OS images, application binaries, logs, and steady data growth, reducing the risk of early capacity pressure. Compared with the 1.92 TB model, it usually delivers the best balance of acquisition cost, usable capacity, and enterprise-grade performance consistency. It is especially well suited for mid-scale virtualization clusters, such as supporting boot and service volumes for about 40 to 60 virtual machines.
Q: Is MZILT960HBHQ-00AH3 suitable for a write-heavy database server?
A: It can support mixed-use or moderate write database workloads, but it is not ideal for very write-heavy servers. With 1 DWPD TLC V-NAND, it fits read-intensive or balanced enterprise applications better.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 1 DWPD, meaning it can sustain one full 960GB drive write per day during its warranty period, aligned with its total endurance rating of 1752 TBW.
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 maintaining data integrity and preventing corruption in enterprise environments.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your goal. RAID 1 suits reliability, RAID 10 balances performance and redundancy, and RAID 5 or 6 may fit capacity-focused deployments with adequate controller support.