NAND Program Failure
The NAND flash fails to correctly program or write a data page. Exascend SSDs explicitly track accumulated program failures through the SMART "Program Fail Count" attribute.
Exascend
Repair, Service, and Parts
Acme Revival is an independent repair network that operates separately from the manufacturers whose devices we service. Our independence enables a repair model that exists beyond manufacturer-controlled strategies, while preserving the ability to work with manufacturers where appropriate.
Taiwan
Manuf. Location
≈ US $30M
Annual Revenue (est)
Data Storage
End Use Segment
Exascend, Inc. is a storage and memory technology OEM founded in 2016 that designs, develops and manufactures high-performance, high-reliability flash-storage products. Its portfolio includes industrial and enterprise SSDs using PCIe/NVMe and SATA interfaces, managed NAND/eMMC and BGA SSDs, DRAM, CFexpress, CFast, SD and microSD memory cards, portable SSDs and related storage products. Exascend serves demanding applications including industrial equipment, automotive and connected vehicles, enterprise/data-center infrastructure, edge computing, aerospace and professional cinematography. The company is particularly known for ruggedized, high-endurance storage, sustained-performance technology, customizable hardware and firmware, and its vertically integrated capabilities spanning design, firmware, software, engineering, manufacturing and testing. Exascend
2 Most Seen Failures:
NAND Erase Failure
A NAND block fails during an erase operation, preventing it from being reliably reused for new data. Exascend SSD firmware records these events through the SMART "Erase Fail Count" attribute and relies on spare/reserved blocks as flash media degrades.
Uncorrectable ECC / Data Corruption
Stored data develops bit errors severe enough that normal error-correction mechanisms cannot reconstruct it. Exascend tracks uncorrectable ECC events and uses LDPC and RAID ECC technologies to reduce the risk of unrecoverable or corrupted data.
Flash Wear / Endurance Exhaustion
Repeated program/erase cycles progressively wear NAND cells, eventually reducing usable flash capacity and reliability. Exascend monitors this through media-wear and remaining-life indicators as well as available reserved space.
Unexpected Power-Loss Corruption
Power can disappear while data or NAND mapping information is still being written, potentially causing lost data, corrupted mapping tables, or an inoperable drive. Exascend identifies unexpected power-loss events and uses firmware or hardware power-loss protection on supported models to mitigate this failure mode.
Thermal Overheating / Recording Shutdown
High sustained workloads can raise controller and NAND temperatures enough to trigger throttling, severe performance reduction, or recording interruption. Exascend specifically acknowledges reports of some CFexpress Type A cards becoming hot enough for recording to stop in certain Sony cameras.
Interface / CRC Communication Errors
Data transmission between a SATA storage device and its host can encounter CRC errors, producing unreliable communication or retries. Exascend SSDs expose both current and lifetime SATA-interface CRC error counters through SMART.
Interface Link Degradation / Disconnect
Repeated interface errors can force a SATA device to negotiate a lower signaling rate or experience a failing connection. Exascend tracks both current and lifetime SATA link-down-grade events specifically for diagnosing this condition.
Data-Retention / Read Failure
NAND charge naturally degrades over time, particularly as flash wears, potentially producing bit errors, unreadable data, or corrupted files. Exascend addresses this failure mechanism with Data Retention Plus, ECC, data refreshing, and related integrity technologies.
1 Acme Revival offers repair, service, and part rebuild opportunities for most Exascend devices.
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- 1 Repairs are performed on a best-effort basis. Acme Revival utilizes a network of sophisticated technicians and engineers with diverse service offerings; despite this, factors that influence the repair outcome may ultimately prove unsuccessful. Acme Revival makes no claim that it can, guarantee a repair before your device is sent in for diagnostic evaluation; even then, repair and diagnostic work are not mutually exclusive. Despite well-intentioned quoting, repairs may still prove unsuccessful.
- 2 Per information known, researched and collected by Acme Revival and its systems at time of page publishing (September 28, 2026).
- *Information regarding this manufacturer/brand/organization is estimated with information collected and known to Acme Revival. This information is intended to provide insights into the spotlight entity, however may not be accurate— information is strictly of estimate nature only.
- **The model list shown here may not be an all-inclusive list of the EcoFlow product range. Model list has been derived per information known, researched and collected by Acme Revival and its systems for the US market.
