Which of the following describes the difference between a write-thru cache and a write-back cache?

Write-back cache generally increases disk write performance because the write operation is considered complete once data is written to the faster cache, with the cache flushing data to disk later.

Write-thru cache typically decreases or has a neutral effect on disk write performance compared to write-back, because the system waits for data to be committed to both cache and primary storage before acknowledging the write as complete.

Write-back cache introduces a risk of losing data during write operations if the cache fails (e.g., power loss) before the data is flushed to permanent storage, unless protected by battery backup or other persistence mechanisms.

With write-thru cache, data is written simultaneously to both the cache and the primary storage device. This ensures data persistence even if the cache fails, thereby removing or significantly reducing the risk of losing data that has been acknowledged as written but hasn't yet reached the permanent storage.