Réseau de stockage
Définition en suspens.
Définition en suspens.
graph LR
Center["Réseau de stockage"]:::main
Rel_network_attached_storage["network-attached-storage"]:::related -.-> Center
click Rel_network_attached_storage "/terms/network-attached-storage"
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linkStyle default stroke:#4b5563,stroke-width:2px;
🧒 Explique-moi comme si j'avais 5 ans
Imagine a giant, super-fast library just for computer information. Servers can borrow books (data blocks) directly from this library as if they were on their own desk, making it quick to read and write information.
🤓 Expert Deep Dive
SANs operate at the block level, abstracting physical storage devices into logical units (LUNs) presented to servers via protocols like Fibre Channel or iSCSI. Fibre Channel utilizes a fabric architecture with WWPNs (World Wide Port Names) for device addressing and zoning for access control, offering high throughput and low latency crucial for I/O intensive workloads. iSCSI leverages the existing TCP/IP stack, using iSCSI initiators (on servers) and targets (on storage arrays) to map SCSI commands over Ethernet. This convergence simplifies infrastructure but can introduce latency and contention issues if not properly managed. Key architectural benefits include centralized storage management, improved utilization through pooling, high availability via redundant paths and hardware, and performance gains from offloading I/O processing. Trade-offs involve higher initial cost and complexity compared to NAS, especially for FC-based SANs, and the need for specialized networking and administration skills. Performance bottlenecks can occur at the network fabric, storage controllers, or host adapters.