Ultimate Performance and Reliability for Mission-Critical Scenarios 

UH611b/UH631b Highlights

SAS 3.0 12Gb/s interface
Read-intensive: 1 DWPD for 5 years; Mixed-use: 3 DWPD for 5 years
Up to 2,200/2,000 MB/s sequential read/write bandwidth and 425/260K IOPS random read/write
Support orderly hot plug and surprise hot plug
MTBF ≥ 2.5M hours, AFR ≤ 0.35%

2,200 MB/s Speed with Dual-Port Protection

Up to 2,200/2,000 MB/s sequential read/write and 425/260K IOPS random read/write
Combined with ultra-low latency and excellent QoS, they provide stable and efficient storage support for critical workloads such as databases, virtualization, and financial transactions
Empowering enterprises with high data availability

Persistent and Non-Disruptive Service

MTBF ≥ 2.5M hours, AFR ≤ 0.35%, designed for mission-critical scenarios
With power-loss protection and superior performance, they safeguard critical data, reduce downtime and lower long-term TCO
Supporting business continuity management

Simpler and More Efficient System Maintenance

Support online firmware upgrade activation (no power cycle required), compatible with mainstream open-source management tools
Achieving non-disruptive maintenance and efficient O&M

Specifications
Model  UH631b    UH611b  
Capacity 800GB 1.6TB 3.2TB 6.4TB 960GB 1.92TB 3.84TB 7.68TB
Sequential read
(128KB)
2000MB/s 2200MB/s 2200MB/s 2200MB/s 2000MB/s 2200MB/s 2200MB/s 2200MB/s
Sequential write
(128KB)
1100MB/s 2000MB/s 2000MB/s 2000MB/s 1100MB/s 2000MB/s 2000MB/s 2000MB/s
Random read IOPS
(4KB)
400K 425K 425K 425K 400K 425K 425K 425K
Random write IOPS
(4KB)
110K 220K 230K 260K 50K 110K 120K 150K
Average read latency(4KB) 85μs        
Average write latency
(4KB)
28μs
Total bytes written 4.38PBW 8.76PBW 17.52PBW 35.04PBW 1.75PBW 3.50PBW 7.01PBW 14.02PBW
Power consumption
(Idle/Max)
6/9W 6/10.5W 6/11W 6/13W 6/9W 6/10.5W 6/11W 6/13W
Endurance 3DWPD    1DWPD   
Flash memory
medium
3D TLC       
Power loss protection Support       
Reliability
UBER <10-18
MTBF 2.5 million hours
AFR ≤0.35%
Data retention (power
off)
40℃ for 3 months
Warranty period 5 years (not exceeding the total bytes written)
Standard
Bus interface SAS 3.0
TRIM Support
Environmental Parameters
Storage temperature -40℃ to 85℃    
Operating
temperature
0℃ to 83℃    
Humidity 5% to 95% relative humidity, non-condensing   
Altitude Operating: -305m to 5,486m;Non-operating: -305m to 12,192m
Vibration Operating: 2.17 GHz (5–700 Hz); Storage: 3.13 GHz (5–800 Hz)   
Shock 1000G@0.5ms (Half-sine wave)    
Power supply DC 12V, +/-10%    
Inrush current (Max) <3A@1s    
Appearance
Form factor U.2 (2.5-inch, 15mm)
Weight <350g
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