Home » Solutions » Operating Systems » VxWorks

VxWorks

Datalight Products for VxWorks

Flash Memory Drivers

Datalight FlashFX® Family is the recommended flash media manager for VxWorks. FlashFX Family products are intelligent software managers for flash memory. With pre-written drivers that support hundreds of NAND and NOR parts, hybrid flash, and application processor flash controllers, the FlashFX Family offers developers unprecedented versatility and control. Its patented bad block management and small block emulation provide a robust solution for rapid integration and complete management of flash memory in any embedded system.

File Systems

Datalight Reliance Nitro^TM is a transactional file system created specifically for embedded devices that need to protect critical system and user data from corruption. It ensures rock-solid data reliability while providing the performance needed to create an optimal user experience. Reliance Nitro works with a broad array of storage media – including flash memory, RAM, hard disk, USB mass storage, SD/MMC, and e•MMC – and virtually any 32-bit operating system.

There are several choices of file systems to use with VxWorks including the default DosFS, Wind River’s Highly Reliable File System (HRFS) and Datalight Reliance Nitro. Wind River provides quality products and customer service; however, there are many use cases where OEMs may benefit by using Reliance Nitro file system. Reliance Nitro brings competitive advantage to products where control over data-at-risk, fast handling of many small files, write performance, mount time and flash memory performance are important.

Feature	DosFS	HRFS	Reliance Nitro
Fault-tolerant during unexpected power loss		√	√
Flexible transaction point settings, (automatic, timed, manual)			√
Fast Read Performance	Variable	√	√
Fast Write Performance	Variable		√
Mount Time Performance	Slow	Slow	Fast*
Discard interface for optimized performance on flash media			√
Simultaneous read and write threads		√	√
100% VxWorks application compatibility	√	√	√
FAT compatible media format	√		√
Windows desktop driver available	√		√

*No check-disk required, significantly boosting mount time performance

File Operations

File system handling many small files or many files in one directory include use cases that involve significant cache operations or data collection. Reliance Nitro is architected to excel under these conditions utilizing tree-based design to allow fast meta-data handling.