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| Brand | Samsung |
|---|---|
| Model | PM1633a |
| Capacity | 15.36TB |
| Usage Class | Enterprise |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3bit MLC (TLC) |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 28032 TBW |
| Sequential Read | 1200 MB/s |
|---|---|
| Sequential Write | 900 MB/s |
| Random Read IOPS | 190000 |
| Random Write IOPS | 37000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS15THMLH |
|---|
Compared with the earlier MZILS15THMLH, the MZ-ILS15T0 PM1633a brings a stronger 15.36TB SAS 12Gb/s platform with up to 1,200/900 MB/s sequential performance and 190,000/37,000 IOPS, increasing performance density per drive for enterprise storage shelves without changing the interface class. Its 28,032 TBW rating at 1 DWPD, combined with Samsung V-NAND 3bit MLC (TLC), makes it a more robust choice for read-heavy virtualization, scale-out databases, and high-capacity tier-1 storage where predictable endurance and rack-level consolidation matter most.
With an endurance rating of 28,032 TBW, this SSD is designed to handle an extremely large amount of data writing over its service life, far beyond the demands of typical system-boot, application, and general server workloads. In practical terms, for common enterprise OS and mixed-read environments, this level of endurance means it can be used as a system drive for many years with ample write margin, while its 1 DWPD rating confirms it is built to support one full drive write per day under enterprise use. For reliability, built-in Power Loss Protection (PLP) helps safeguard in-flight data and mapping tables during unexpected power interruptions, reducing the risk of corruption and improving operational stability. Its UBER of 1.0E-17 indicates an exceptionally low unrecoverable bit error rate, which is a key enterprise-grade indicator for data integrity, especially in storage systems where accuracy and consistency are critical.
1. The SAS 12Gb/s interface combines enterprise-grade dual-port availability with stable shared-storage connectivity, making it a strong fit for mission-critical servers and HA storage arrays.
2. Its sequential read performance accelerates large-block data movement, helping shorten backup windows, speed up analytics scans, and improve media or archive retrieval efficiency.
3. The strong random read capability enables fast response under highly concurrent access, which is especially valuable for virtualization, OLTP databases, and metadata-heavy enterprise workloads.
4. With a 1 DWPD endurance profile, the drive is well suited for read-centric and mixed-use deployments that need predictable lifespan and lower replacement risk across years of continuous operation.
5. Built on Samsung V-NAND 3bit MLC (TLC) and low typical latency, it delivers a balanced mix of density, cost efficiency, and consistently quick application response for latency-sensitive business systems.
Lower capacity reference: 7.68TB Higher capacity reference: 30.72TB In this series, 15.36TB is the sweet-spot capacity for mainstream enterprise deployment. Compared with 7.68TB, it gives much better space headroom, allowing denser VM placement, larger database footprints, and longer growth cycles before expansion is needed. Compared with 30.72TB, it usually delivers a more attractive balance of acquisition cost, usable capacity, and performance consistency, while keeping the same enterprise-class read/write and random IOPS profile. It is especially well suited for mid-scale virtualization clusters, such as shared storage for around 60 to 80 mixed-application virtual machines.
Q: Is MZ-ILS15T0 suitable for a write-heavy database server?
A: MZ-ILS15T0 can support mixed-use and moderately write-intensive database workloads, thanks to its 1 DWPD rating and 28,032 TBW. For extremely write-heavy environments, a higher-endurance SSD may be preferable.
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 15.36TB drive write per day throughout its warranty period, consistent with its total endurance rating of 28,032 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 power failures, which is critical for maintaining data integrity and reducing corruption risk in 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 database performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused deployments with balanced protection.