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D5427/D5447

DERA D5427/ D5447 Series NVMe SSD is DERA's High performance enterprise product line. These products utilize a Gen3 PCIe interface and are compatible with NVMe 1.3. The application of YMTC 64-layer 3D TLC high-speed flash memory based on the Xtacking architecture provides products with high throughput and IOPS, low latency, and good QoS characteristics. D5427/D5447 Series product line has an efficient firmware architecture which to optimize drive performance and endurance and is available in high capacities up to 7.68TB. The cyclic redundancy checks and end-to-end data path protection improve the product reliability. It features thermal monitoring and protection, SMBus for out-of-band management.


DERA D5427/ D5447 Series are compatible with mainstream OS and virtualization system. The performance meets the requirements of database and virtualization application. DERA D5427/ D5447 try to keep a balance between performance and cost, to help customers to reduce TCO.


Functional Features

    • PCIe 3.0 x4

    • NVMe 1.3 compliant

    • Data integrity of enterprise class

    • 1.6TB ~ 7.68TB capacity options

    • Up to 3450/ 3050 MB/s sequential R/ W bandwidth, Up to 780K/ 380K random read/ write IOPS

    • YMTC 64-layer 3D TLC

    • Native driver support of mainstream operating systems and hypervisors

    • UEFI bootable

    • Surprise hot-pluggable

Product Features
Software-hardware Co-designed
Data Integrity
Stable Performance
The ASIC controller of DERA D5427 NVMe SSD is developed by DERA with software-hardware co-designed methodology. Built-in with many purpose-specific hardware units, the controller enables enterprise-class data integrity, sophisticated NAND flash management, and performance aggregation in a power- efficient way. Equipped with self-developed controller and YMTC enterprise-level high-speed 64-layer 3D TLC Nand flash based on the Xtacking® architecture，orchestrated by the FTL designed at the same pace with the controller, D5427 series deliver reliable and high performance NVMe storage features.
The intense hardware ECC units built in DERA D5427 NVMe SSD throttle errors occurred during accesses to NAND device. DERA D5007 series also implement end-to-end protection on the whole data paths against silent errors, adaptive redundancy protection among independent NAND units, and protection against unexpected power-losses, which are forged into an integrated protection for user data. In addition, DERA D5427 series NVMe SSD constantly sense the temperatures on board once powered on and react in real time accordingly to keep the devices from overheating disasters, decreasing the daily operation complexities.
The FTL algorithm of DERA D5427 NVMe SSD sufficiently anticipate the extreme conditions of highly-intense workloads and workload variations with sophisticated scheduling and controls over front-end I/O demands and FTL backend activities, ensuring a stable performance in all cases. DERA D5427 series NVMe SSD deliver a performance consistency above 90% in significantly heavy random I/O workloads.
Application and Load

  • Database

  • Cloud Computing

  • Virtualization

  • Streaming, CDN

  • Big Data Analytics

  • Software Defined Storage

  • Banking & Telecom

Product Parameters
Product SeriesD5427D5447
Capacity(TB)1.92TB, 3.84TB，7.68TB1.6TB，3.2TB，6.4TB
Form FactorU.2/ AIC
Host InterfacePCIe 3.0 x 4
NVMe ComplianceNVMe 1.3
NANDYMTC 64-layer 3D TLC NAND
128KB Seq. R/ Write [1]Up to 3450/ 3050 MB/s
4KB Ran. R/ W IOPS [2]Up to 780K/ 190KUp to 780K/ 380K
Ran. R/ W Latency [3]94/ 18 µs
Power [4]Seq Write20W
Seq Read13W
Idle7W
DWPD（5 years）1 DWPD3 DWPD
ReliabilityUBER 10-17
Temperature0-70℃
OS SupportWindows Server, Windows10 (64-bit), VMware ESXi, RHEL, Centos, SLES, Ubuntu, Fedora, NeoKylin
CertificationsUL, CE, FCC, RoHS


[1] 100%LBA, OIO64 (TC=1, QD=64).

[2] 100%LBA, measured with OIO256 (TC=4, QD=64).

[3] 100%LBA, OIO1 (TC=1, QD=1).

[4] 100%LBA, Sequential R/W power consumption is measured with 128KB, OIO64(TC=1，QD=64) which is lower than Random operation. Random R/W measured with 4KB, OIO256 (TC=4, QD=64). Scope trigger over 100ms sample period.

*Performances measured by FIO tool on linux, result may differ according to testing platform.1MB/s = 1,000,000 bytes/ second.

Model List
Product SeriesPart NumberCapacity（TB）Form Factor
D5427P34YTR-02T0U-ST1.92U.2 (2.5-inch 15mm)
P34YTR-04T0U-ST3.84U.2 (2.5-inch 15mm)
P34YTR-08T0U-ST7.68U.2 (2.5-inch 15mm)
P34YTR-02T0H-ST1.92AIC (HHHL)
P34YTR-04T0H-ST3.84AIC (HHHL)
P34YTR-08T0H-ST7.68AIC (HHHL)
D5447
P34YTM-01T6U-ST1.6U.2 (2.5-inch 15mm)
P34YTM-03T2U-ST3.2U.2 (2.5-inch 15mm)
P34YTM-06T4U-ST6.4U.2 (2.5-inch 15mm)
P34YTM-01T6H-ST1.6AIC (HHHL)
P34YTM-03T2H-ST3.2AIC (HHHL)
P34YTM-06T4H-ST6.4AIC (HHHL)


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