Exascend SE4 2.5″ SATA Enterprise SSD for QNAP – 15.36TB

A 2.5″ SATA‑III enterprise‑grade SSD with up to 15.36 TB storage capacity — one of the highest capacities available in a compact SATA SSD format.It uses 3D TLC NAND + DRAM, and delivers up to ~555 MB/s read / ~530 MB/s write, offering reliable sequential and random performance for NAS, servers or storage‑heavy workloads.Built for reliability and endurance: includes power‑loss protection, LDPC error correction, wear‑leveling, and is designed for use in NAS / enterprise storage / caching setups — ideal for large‑scale storage in a compact 2.5″ form factor.

Technical Specifications

Spec	Details
Form Factor	2.5″ SATA SSD (100.5 mm × 69.85 mm × 7 mm)
Interface	SATA‑III, 6.0 Gb/s
Capacity	15.36 TB (also available in smaller capacities)
Flash Type	3D TLC NAND (with DRAM)
Sequential Read Speed	Up to ~ 555 MB/s
Sequential Write Speed	Up to ~ 530–535 MB/s
Random (4K) Read	Up to ~ 96,000–98,000 IOPS
Random (4K) Write	~ 18,000–24,000 IOPS (depending on workload)
Power Consumption	Active: < ~2.6–3.5 W; Idle: < ~0.8–0.9 W
Operating Temperature Range	0 °C to 70 °C
Storage Temperature Range	–40 °C to 85 °C
Reliability / Endurance	MTBF: ~ 2,000,000 hours Supports wear‑leveling, advanced LDPC error correction, firmware + hardware power‑loss protection, optional encryption (TCG Opal 2.0 / AES‑256)
Shock & Vibration	Operating: 50 G (11 ms), Non‑operating: 1500 G (0.5 ms) ; Vibration: 10 G (peak, 10–2000 Hz)
Supported Features	TRIM / SMART / NCQ / ATA command sets, SATA link power management, host hot‑plug/removal support
Warranty	5‑year limited warranty

Key Features

Very high capacity — up to 15.36 TB in a 2.5″ SATA‑III form factor, enabling large storage pools in a compact drive.
Enterprise‑class flash & hardware — uses 3D TLC NAND with DRAM, built for sustained performance and reliability under heavy workloads.
Good sequential performance — up to ~ 555 MB/s read and ~ 530 MB/s write (typical for SATA‑III).
Respectable random I/O performance — 4K random reads and writes in the enterprise‑grade SSD range, making it usable not only for bulk storage but also more demanding tasks (e.g. workloads, caching).
Power‑loss protection — hardware‑ and firmware‑level power‑loss protection (PLP) to help preserve data integrity if power is lost unexpectedly.
Advanced error correction & wear‑leveling — built‑in LDPC error‑correction, global static & dynamic wear leveling to maximize NAND lifespan and reliability.
Energy efficient — despite large capacity, the drive keeps power draw relatively low (typical active power draw under ~2.8 W) — helpful in NAS/ server environments with multiple drives.
Enterprise‑grade reliability and lifespan — rated for long MTBF (mean time between failures), suitable for 24/7 operation in servers or NAS units.
Flexible compatibility with SATA systems — being a SATA‑III 2.5″ SSD, it works broadly with many NAS devices (like many QNAP units), servers and storage arrays that accept SATA drives, without need for special NVMe support.

Good Application Scenarios for the SE4 15.36 TB SSD

Large‑capacity storage pool for media / archive data
Use the drive (or several drives) to build a big all‑SSD storage pool for storing large volumes of data — e.g. video libraries, photo archives, backup snapshots, large document repositories. Its huge capacity (15.36 TB per disk) and SATA compatibility make it ideal for high‑density storage without needing many smaller drives.
Enterprise or business NAS / Server usage
For a business with many users or multiple network clients accessing shared storage (file server, media server, document server, etc.), the SE4’s enterprise‑grade reliability, endurance, and stable performance make it well suited as the backbone storage medium.
Virtualization / VM hosting on NAS / Server
If you use your QNAP for virtualization (VMs, containers, VMs storage, virtual desktops, etc.), the SE4’s random‑I/O performance, SSD speed, and endurance support mixed workloads (reads/writes, metadata ops, OS access) better than traditional HDD arrays.
All‑SSD storage pool for consistent performance & reliability
Rather than using a hybrid SSD + HDD setup (or SSD caching + HDD), you could go “all‑SSD”: SE4 gives you the speed of SSD + the capacity close to HDD (especially with 15.36 TB per drive), minimizing mechanical failures, reducing latency, and offering lower power consumption.
Data‑center / small‑business server / branch‑office storage
In a small datacenter, server room, or branch office setting where reliability, uptime, and data integrity matter (and where storage density per slot matters), SE4’s enterprise features (power‑loss protection, high MTBF, error correction) make it a good fit.
Use‑case requiring frequent access or heavy I/O (e.g. editing, rendering, database workloads)
For workloads like video editing, media post‑production, database access, or any application needing frequent reads/writes and random I/O, using SE4 gives better responsiveness and consistency than traditional HDD arrays.