0 views collected around this technical thread.
This article explains the ALUA (Asymmetric Logical Unit Access) multipath model, compares it with other storage path mechanisms, describes its operation in dual‑active environments, outlines key features such as path states and failover, and reviews native ALUA support across major operating systems.
The article explains front‑end state management using San’s san‑store, detailing its Flux‑style architecture, action registration, component connection, immutable updates with san‑update, and a time‑travel debugging system that logs state changes, restores snapshots, computes efficient diffs, and discusses its benefits and limitations.
This article explains the concept of data storage, introduces Fibre Channel SAN architecture, outlines its components and advantages, and compares DAS, NAS, and SAN in terms of connection methods and typical application scenarios.
This article provides a comprehensive overview of storage fundamentals, covering the three main storage architectures—DAS, NAS, and SAN—their advantages and limitations, followed by an in‑depth explanation of disk arrays and the various RAID levels, their principles, classifications, and practical use cases.
This article provides a comprehensive overview of storage architecture, covering centralized and distributed storage, block/file/object storage models, common protocols like NFS, CIFS, iSCSI, connection methods such as DAS, NAS, SAN, and examines typical distributed storage products including FastDFS and Swift.
This article explains the concepts, principles, and benefits of storage virtualization, covering host‑level, network‑level, and storage‑level approaches, and compares NAS and SAN technologies while highlighting how virtualization creates unified storage pools and reduces total cost of ownership.
This article provides a comprehensive overview of modern storage systems, covering hardware components, storage software, networking protocols like iSCSI, the roles of SAN and NAS, RAID configurations, hot spares, deduplication, snapshots, remote replication, and disaster recovery strategies.
This article provides a comprehensive introduction to storage arrays, DAS, NAS, SAN, RAID levels, snapshot technology, and data replication, explaining their architectures, functions, and how they improve performance, reliability, and cost efficiency in modern IT infrastructures.
This article explains the fundamentals of data storage, covering hard‑disk hardware, internal structures, logical volumes, file systems, and the differences between direct‑attached, network‑attached, and storage‑area network solutions.
This article explains the three main storage architectures—Direct Attached Storage (DAS), Network Attached Storage (NAS), and Storage Area Network (SAN)—and compares their protocols, scaling methods, caching policies, RAID levels, LUN concepts, and core Linux block I/O structures.
This article provides a comprehensive overview of Fibre Channel switches, covering NPIV virtualization, zone concepts and types, various port modes including long‑distance options, fiber cable and optical module choices, transmission distance considerations, credit buffer handling, ISL link aggregation, and special AG mode configurations.
This article provides a comprehensive overview of Fibre Channel switches, covering NPIV virtualization, zone concepts and types, various port modes for long‑distance links, fiber cable and optical module choices, credit buffer considerations, ISL trunking, and special port configurations such as Brocade AG mode.
The article explains how data‑control separation architecture is used across traditional and distributed file systems, high‑performance SAN designs, software‑defined storage solutions, and cloud platforms like OpenStack, highlighting its impact on performance, scalability, and resource contention.
The article explains HPE 3PAR's Storage Federation features—including Peer Motion, Online Import, and Peer Persistence—detailing their mechanisms, benefits, and comparisons with active‑active solutions and similar offerings from Dell and Fujitsu for high‑availability storage architectures.
This article provides a detailed overview of Huawei's dual-active storage solutions, describing the VIS gateway architecture, stretched VCS clusters, HyperMetro active-active implementation, network and hardware considerations, replication mechanisms, distributed locking, and performance optimizations for long-distance data-center deployments.
Amid rising data‑storage complexity, twelve innovative startups emerged in 2015‑2016, leveraging flash, disk, and cloud technologies to improve data mobility and management across hierarchical storage tiers, offering solutions ranging from cloud‑native storage networks to SAN arrays and virtualization platforms.
The article explains how virtualization backup originated with VMware and now spans major platforms such as VMware, Hyper‑V, and Citrix, detailing their backup interfaces (VADP, VSS, Xen API), backup modes (SAN, Hot‑add, NBD), and practical deployment considerations for enterprise data protection.
This article explains data‑center wiring zones, LAN, SAN and KVM network architectures, common distributed designs, modular POD concepts, and Top‑of‑Rack (ToR) switching, providing detailed guidance on cabling, equipment placement, and scalability for modern data‑center operations.