alleryStart learning →Stable storage is implemented by
Aa single fast SSD on the same rack
BDRAM with a dedicated battery backup
Creplication across multiple disks
Dthe CPU's L3 cache with parity bits
Answer & Solution
Correct answer: C. replication across multiple disks
Stable storage is the theoretical idea of storage that never fails.
In practice it's approximated by replicating writes across multiple disks (RAID 1 or higher) so that any single disk failure leaves the data intact.
A single disk, DRAM, or CPU cache cannot guarantee survival across all failure modes.
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