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Storage (SAN/NAS/DAS)

Level: L1 | Domain: datacenter

Storage infrastructure -- SAN, NAS, and DAS -- underpins every persistent workload from databases to object stores. Understanding storage protocols (iSCSI, NFS, Fibre Channel), performance characteristics (IOPS, throughput, latency), and failure modes is critical for capacity planning and incident response.

This topic covers enterprise and homelab storage architectures, including the trade-offs between local disks, network-attached storage, and distributed storage systems.

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