Réseau de stockage connecté
Définition en suspens.
Définition en suspens.
graph LR
Center["Réseau de stockage connecté"]:::main
Rel_arweave["arweave"]:::related -.-> Center
click Rel_arweave "/terms/arweave"
Rel_storage_area_network["storage-area-network"]:::related -.-> Center
click Rel_storage_area_network "/terms/storage-area-network"
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🧒 Explique-moi comme si j'avais 5 ans
📁 Imagine a giant hard drive that everyone in your house can use at the same time through the Wi-Fi. It's not plugged into just one computer; it's plugged into the router so your laptop, phone, and TV can all save and share files in one place.
🤓 Expert Deep Dive
Network-Attached Storage (NAS) fundamentally operates as a self-contained file server optimized for storage operations. Architecturally, it comprises a compute module (CPU, RAM, network interface) and a storage subsystem (disk shelves, controllers). The compute module runs a specialized NAS OS (e.g., proprietary Linux-based firmware) that implements file-sharing protocols (SMB/CIFS, NFS, AFP) and manages storage resources. Data access is mediated through these protocols, abstracting the underlying block-level storage from the client. Key features include support for various RAID configurations (RAID 0, 1, 5, 6, 10) for performance and/or redundancy, leveraging techniques like parity calculations or mirroring. Advanced NAS systems incorporate features like thin provisioning, snapshots for point-in-time recovery, data deduplication and compression for storage efficiency, and built-in backup solutions. Performance is often constrained by the network interface (Gigabit Ethernet, 10GbE, etc.), the efficiency of the NAS OS, and the I/O capabilities of the underlying disks. Security is managed through user authentication, access control lists (ACLs), and network security measures (firewalls, encryption). The primary trade-off compared to Storage Area Networks (SANs) is that NAS provides file-level access, whereas SANs offer block-level access, making NAS simpler to manage but potentially less performant for certain high-I/O database workloads.