Discussion
Match each storage type with what it suits.
List I
A. Object storage
B. Block storage
C. File storage
D. Instance store
List II
1. shared access from several instances at once
2. large immutable files, backups and media
3. temporary scratch data local to a machine
4. a filesystem or database on a single instance
Answer: B
Correct answer: A-2, B-4, C-1, D-3
Four storage types for four access patterns. Object storage suits large, essentially immutable items - backups, media, logs. Block storage is the disk for a filesystem or database on one instance. File storage provides a shared filesystem that several instances mount at once. And an instance store is fast local disk that vanishes when the instance stops, so it is for scratch data only.
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