Samsung MZ7KM480HMHQ-00005 SM863a 480gb SATA 6Gbps 2.5inch SSD

🔧 Core Specifications

Attribute Details

Model MZ7KM480HMHQ-00005

Series Samsung SM863a

Capacity 480 GB

Form Factor 2.5-inch (7mm)

Interface SATA III (6 Gb/s)

NAND Type MLC (enterprise-grade)

Controller Samsung proprietary

Cache 512 MB DRAM

Drive Type Enterprise SSD (Mixed Use)

⚡ Performance

Metric Performance

Sequential Read up to ~510 MB/s

Sequential Write up to ~485 MB/s

Random Read (4K) up to ~95,000 IOPS

Random Write (4K) ~19,000–26,000 IOPS

👉 This is top-tier SATA performance, near the interface limit.

🧠 Endurance & Reliability

Feature Value

Workload Type Mixed Use (MU)

DWPD ~3.6 DWPD

Endurance (TBW) ~3,000+ TBW (approx)

MTBF ~2 million hours

Power Loss Protection Yes

Encryption AES-256 support

👉 Compared to typical SATA SSDs (~0.3–1 DWPD), this is very high endurance.

🚀 Key Features

MLC NAND → more durable than TLC (used in newer SSDs)

Power-loss protection (PLP) → protects data during outages

Consistent performance → no consumer-style slowdown under load

Enterprise firmware → optimized for RAID / servers

🖥️ Compatibility

✔ Works with:

Servers (Dell, HPE, Supermicro, etc.)

RAID controllers / NAS systems

Standard SATA systems (can work in desktops)

❗ Possible issues:

OEM firmware (Dell/HP variants)

Some drives may be formatted in 520-byte sectors (needs reformat)

⚠️ Important Notes

Often sold as:

Used / pulled from servers

High power-on hours (normal for enterprise drives)

Still reliable due to:

Data center usage conditions

High TBW rating

💬 From community experience:

Enterprise SSDs often run 24/7 for years but remain reliable due to controlled environments

📌 Quick Summary

480GB enterprise SATA SSD (MLC)

~510MB/s speeds (SATA limit)

Very high endurance (~3.6 DWPD)

Designed for mixed workloads (read + write)

Reliable even when used/refurbished

🧠 Bottom Line

✔ Excellent for RAID, virtualization, databases

✔ Much more durable than consumer SSDs

✔ Great budget enterprise SSD (used market)

❗ Slower than SAS SSD / NVMe (interface limitation)