Type
Size
Access time
CPU
L1 cache
256 KB
2 ns
L2 cache
1 MB
5 ns
L3 cache
6 MB
30 ns
RAM
DIMM
8 GB
100 ns
Secondary storage
SSD
256 GB
50 µs
HDD
2 TB
5 ms
Tertiary storage
NAS - Network Access Server
100 TB
Network dependent
Cloud proprietary
1 PB
Provider dependent