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AWC 500
System software
Robust data storage
Proven fail-safe file system (UBIFS – Unsorted Image File
System) to ensure data on the AWC 500:
► Tolerates sudden power interrupts and unclean reboots
► Recoverability – May be fully recovered if the indexing
information gets corrupted.
► Ensures data integrity – Everything written to the flash
media gets checksums.
Primary
image
Root File System (RFS)
Linux kernel
Storage technologies:
Application File System (AFS)
Root File System (RFS)
Power loss
protected
data storage
Boot loader (U-Boot)
NAND
NOR
FRAM
Instant and long life storage of persistent variables is ensured
with FRAM (ferro magnetic RAM) as NOVRAM :
► High Endurance type guaranteeing 100 trillion read/
writes cycles
► 10 years storage without battery power necessary
Our new PCM5.2 relies on the ext4 file system and features
a filesystem cache that is written periodically every few
seconds, and a dedicated data area of persistent variables
is guaranteed to be persisted automatically to the mass
storage on power loss.
Backup
image
Linux kernel
7
Boot
modes
Run
Service
Download
Boot
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