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| Brand | Samsung |
|---|---|
| Model | PM1633a |
| Capacity | 960GB |
| 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 | 1752 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 | MZILS960HEHP |
|---|
Compared with the earlier MZILS960HEHP, the Samsung PM1633a (MZ-ILS9600) brings a newer 3bit V-NAND platform that improves cost efficiency per GB while still sustaining enterprise-class endurance at 1 DWPD and 1,752 TBW. At 960GB, its 12Gb/s SAS interface, 1,200/900 MB/s throughput, and 190K/37K IOPS make it a stronger fit for read-centric virtualization, database, and boot/storage tiers that need better density and value without giving up SAS reliability.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZ-ILS9600 is designed to handle writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical OS, boot, and mainstream enterprise application workloads. In practical terms, under normal system-disk usage, this level of endurance supports long-term deployment with strong wear margin and can comfortably deliver many years of reliable operation. For enterprise reliability, the MZ-ILS9600 includes power-loss protection, which helps preserve in-flight data and protects mapping metadata during unexpected power interruptions, reducing the risk of corruption or incomplete writes. Its UBER of 1.0E-17 and 2 million-hour MTBF indicate a very low uncorrectable bit error rate and strong overall dependability, giving procurement teams added confidence for business-critical environments.
1. The SAS interface enables seamless integration into existing enterprise storage arrays while adding dual-port availability for mission-critical environments that cannot tolerate a single path failure.
2. Its strong sequential read performance accelerates backup restores, large database scans, and analytics jobs by moving bulky datasets through the storage stack much faster.
3. The high random read capability keeps virtual machines, OLTP databases, and metadata-heavy workloads responsive even when many users and applications hit the drive at once.
4. This endurance profile is well suited to read-intensive enterprise deployments, giving operators predictable service life under steady daily rewrite activity without overpaying for write-heavy media.
5. Built on Samsung V-NAND TLC and tuned for low latency, it delivers a cost-efficient balance of flash density and consistently quick response times for business-critical applications.
For the MZ-ILS9600 960GB enterprise SSD, the closest lower-capacity option in the same family is typically 480GB, while the next higher-capacity option is 1.92TB. As is common in enterprise SATA SSD lineups, sequential read/write performance and random IOPS are generally very similar across these three capacities, with differences mainly appearing in endurance and usable space. At 960GB, this model sits in the sweet spot of the series. Compared with 480GB, it gives much better headroom for OS images, logs, application growth, and overprovisioning flexibility. Compared with 1.92TB, it delivers nearly the same enterprise-class performance while keeping acquisition cost and fleet-wide budget under better control. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 general-purpose virtual machines.
Q: Is MZ-ILS9600 suitable for a write-heavy database server?
A: MZ-ILS9600 is better suited for mixed-use or read-focused enterprise workloads. With 1 DWPD endurance, it can support moderate database writes, but it is not ideal for highly write-intensive database servers.
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 960GB drive write per day over 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, MZ-ILS9600 includes power loss protection. PLP is critical because it helps preserve in-flight data and metadata during sudden outages, reducing corruption risk and improving enterprise data reliability.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is preferred for database performance and redundancy, while RAID 5 or RAID 6 may be suitable for capacity-focused environments.