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| Brand | Samsung |
|---|---|
| Model | PM1633A |
| Capacity | 1.92 TB |
| 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 | 3504 TBW |
| Sequential Read | 1300 MB/s |
|---|---|
| Sequential Write | 800 MB/s |
| Random Read IOPS | 190000 |
| Random Write IOPS | 33000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS1T9HPJM-00007 |
|---|
Compared with the previous-generation MZILS1T9HPJM-00007, the Samsung PM1633A (MZILS1T9HEJH0D3) delivers a clearer balance of usable 1.92 TB capacity, 3,504 TBW endurance at 1 DWPD, and higher-value random-read responsiveness on a 12Gb/s SAS platform. For mixed enterprise workloads such as virtualization clusters, scale-out storage, and read-intensive database tiers, its Samsung V-NAND 3D TLC architecture and up to 1300/800 MB/s with 190,000/33,000 IOPS provide a more efficient performance-per-bay upgrade path than the prior part.
With an endurance rating of 3,504 TBW and 1 DWPD, the MZILS1T9HEJH0D3 can sustain writing its full usable capacity once per day across its rated service life, which is more than sufficient for typical server boot, system, and mixed enterprise workloads. In practical terms, for common OS, application, and read-heavy deployment scenarios, this level of endurance supports many years of stable operation with substantial write headroom, giving buyers strong confidence in long-term use. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and protects mapping tables during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its UBER specification of 1.0E-17, combined with a 2 million hour MTBF, indicates a very low probability of unrecoverable bit errors and a design target aligned with dependable data-center operation.
1. The SAS 12Gb/s interface, paired with 1300 MB/s sequential read performance, enables smooth integration into dual-port enterprise storage while accelerating bulk data scans, backup restores, and virtual machine image loading.
2. With 190,000 K IOPS random read capability, the drive sustains fast access to heavily fragmented datasets, helping databases and virtualized workloads respond consistently under peak concurrency.
3. A 1 DWPD endurance rating makes it well suited for read-centric enterprise deployments, providing predictable service life for always-on application servers, boot volumes, and content delivery tiers.
4. Built on Samsung V-NAND 3D TLC, the SSD balances capacity, power efficiency, and cost, giving data centers a practical flash tier for scaling mainstream business workloads without sacrificing reliability.
5. The typical 100 µs latency helps reduce storage wait time at the application layer, improving transaction responsiveness and delivering steadier QoS in latency-sensitive enterprise environments.
Lower capacity: 960 GB Higher capacity: 3.84 TB The 1.92 TB model sits at the sweet spot of this SSD family. Compared with the 960 GB option, it gives meaningfully better capacity headroom for OS images, application binaries, logs, and short-term data growth, reducing early replacement pressure. Compared with the 3.84 TB version, it usually delivers nearly the same enterprise SATA performance while keeping acquisition cost and cost-per-deployment more manageable. This makes 1.92 TB especially well suited for mid-scale virtualization clusters, such as hosting around 40 to 60 general-purpose virtual machine boot volumes.
Q: Is MZILS1T9HEJH0D3 suitable for a write-heavy database server?
A: MZILS1T9HEJH0D3 is better suited for mixed-use enterprise workloads rather than highly write-heavy databases. With 1 DWPD and 3504 TBW, it supports steady writes, but intensive logging environments may require higher endurance.
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 handle one full 1.92 TB drive write per day over its warranty period. That aligns with its total endurance rating of 3504 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 unexpected outages, which is critical for enterprise systems requiring data integrity, consistency, and reduced corruption risk.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is ideal for database performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused deployments with acceptable write overhead.