A write-back WAFS system achieves the same result in about 4 seconds.
The issue of write-through and write-back architectures mentioned earlier figures into how well a WAFS implementation scales.
It is possible that this will change in the future, but at the present moment this strategy is so pervasive that drive manufacturers presume write-back caching to be enabled when certifying their ATA products.
Though performance enhancement is helpful, the use of write-back caching in ATA RAID implementations presents at least two severe reliability drawbacks.
The reason that this more global type of corruption occurs is due to another problem with using a write-back cache.
These write-back cache problems are a common cause of data corruption.
Data written to a write-back
cache is vulnerable until it is made permanent on disk, which is done later as a background task when spare cycles are available.
Thereafter, a strong earnings recovery should be triggered by reserve write-backs
and supported by NIM stabilisation.
The Irish central bank has said that commercial banks in the nation need to be careful regarding provision write-backs