Storage Terms
- Backup: Backups are taken to recover from failures quickly
- Archives: Archives are taken to recover from disasters and can take time to restore.
- Performance of Hard disks:
- Disks are of two types
- HDD
- SSD
- Disks performance can be measured by one of two metrics below
- IOPS (I/O per second): SSD’s use this. Number of IO operations
- Throughput: HDD use this. Total transfer size
- Disks are of two types
- Units:
- KB, MB, GB, TB
- KiB, MiB, GiB, TiB
