Storage

Beginner → Advanced

Disks to disaster recovery, RPO/RTO and restore testing.

Outcome

Design storage that survives failure — and prove your backups actually restore.

The ladder

Beginner

▸Block / file / object
▸Filesystems & mounts
▸Partitions
▸df vs du

Intermediate

▸RAID trade-offs
▸LVM
▸Snapshots ≠ backups
▸IOPS vs throughput
▸NAS vs SAN

Advanced

▸Replication (sync/async)
▸RPO / RTO
▸Backup strategy (3-2-1)
▸Latency & queue depth
▸DR failover decisions

Example lessons

lesson

Snapshots are not backups

lesson

RPO vs RTO

lesson

The storage I/O path

Practise with puzzles

IntermediateDisk Full, But du Says It's Fine

Related labs

LabLinux Black Box: The Silent Web Server

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