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| Brand | Samsung |
|---|---|
| Model | PM1643 Series |
| Capacity | 3.84TB |
| Usage Class | Enterprise Data Center / Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 15mm |
|---|
| NAND Flash | Samsung V-NAND TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 7008 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 40000 |
| Average Latency | 120 μs |
| Mean Time Between Failures | 2.0 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT3T8HALS-00007 |
|---|
For 12Gb/s SAS deployments, the 3.84TB Samsung PM1643 MZILT3T8HALSAD4 delivers a strong enterprise balance of 2,100/1,700 MB/s sequential speed, 400K/40K IOPS, and 7,008 TBW at 1 DWPD, making it especially well suited to virtualized databases, ERP, and mixed read/write storage tiers. Compared with the earlier MZILT3T8HALS-00007 revision, MZILT3T8HALSAD4 is the later PM1643 refresh, giving you a drop-in upgrade path with the same proven SAS footprint while improving product lifecycle continuity and qualification alignment for current server and array platforms.
With an endurance rating of 7008 TBW and 1 DWPD, the MZILT3T8HALSAD4 is designed to handle the equivalent of writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical enterprise boot, application, and mixed read/write workloads. In practical terms, for common system-disk or server OS usage, this level of endurance provides long-term peace of mind and can comfortably support many years of stable operation under normal deployment conditions. For enterprise reliability, this SSD includes Power Loss Protection (PLP), which helps preserve in-flight data and protects metadata integrity during unexpected power interruptions, reducing the risk of corruption or downtime. Its UBER of 1.0E-17 indicates an extremely low unrecoverable bit error rate, meaning the drive is built to deliver highly dependable data integrity for business-critical environments.
1. The SAS 12Gb/s interface, paired with 2100 MB/s sequential read speed, enables fast bulk data movement and smooth integration into dual-port enterprise storage arrays for backup, streaming, and database scan workloads.
2. Up to 400,000 random read IOPS helps virtualized infrastructure and high-concurrency databases respond quickly under heavy small-block access, improving VM density and query responsiveness.
3. A 1 DWPD endurance rating provides predictable write life for mixed-use enterprise deployments, making it well suited to business-critical workloads that need daily overwrite capability without moving into higher-cost write-intensive tiers.
4. Samsung V-NAND TLC delivers a strong balance of capacity, power efficiency, and cost control, giving data centers scalable flash performance without sacrificing enterprise-class reliability.
5. The 120 µs typical latency supports consistently fast transaction handling, reducing storage wait time for latency-sensitive applications such as OLTP systems and real-time analytics.
Lower capacity reference: 1.92TB Higher capacity reference: 7.68TB At 3.84TB, the MZILT3T8HALSAD4 sits in the sweet spot of this enterprise SSD family. Compared with the 1.92TB model, it gives much better capacity headroom for data growth, denser VM placement, and longer refresh cycles without a major jump in operational complexity. Compared with the 7.68TB option, it usually delivers the best balance of usable capacity, acquisition cost, and standard enterprise performance consistency. This makes 3.84TB especially well suited for mid-scale virtualization clusters, such as hosting around 40 to 60 mixed-workload virtual machines per node.
Q: Is MZILT3T8HALSAD4 suitable for a write-heavy database server?
A: MZILT3T8HALSAD4 can support mixed or moderate write database workloads, but with 1 DWPD and TLC V-NAND, it is not the best choice for extremely write-heavy database environments.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated for 1 DWPD, meaning it can sustain one full 3.84TB drive write per day over its warranty period, aligning with its 7008TB total endurance rating.
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 prevent in-flight data loss and metadata corruption during unexpected power failures, which is essential for enterprise systems.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is ideal for high performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused enterprise deployments.