Microsoft Windows Server iSCSI built-in storage protocol share server local hard drive.

Описание: In Windows Server 2025, iSCSI (Internet Small Computer System Interface) is a built-in storage protocol that allows a server to share its local hard drive space over a standard TCP/IP network as block-level storage. To other computers on the network, this remote storage appears and behaves exactly like a locally attached hard drive. Key components and features include:

|| Core Components
__iSCSI Target Server: A server role that turns your Windows Server 2025 machine into a storage device. It hosts "iSCSI Virtual Disks" (VHDX files) and presents them to clients over the network.

__iSCSI Initiator: The client (e.g., another Windows server or a Windows 11 PC) that connects to the target to access the storage.

|| Why Use iSCSI in Server 2025?
__Cost-Effectiveness: It uses existing Ethernet infrastructure (NICs and switches), eliminating the need for expensive, specialized Fibre Channel hardware.

__Virtualization & Clustering: Ideal for Hyper-V clusters because it provides the shared block storage required for high availability and live migration.

__Diskless Booting: Allows hundreds of servers to boot from a single operating system image stored centrally on the iSCSI Target.

__Multipathing (MPIO): Supports multipath I/O, which allows for redundant network paths to prevent connection drops and improve performance.

|| Improvements in Windows Server 2025
While iSCSI is a mature technology, Windows Server 2025 integrates it into a platform optimized for faster storage and hybrid cloud capabilities via Azure Arc. It also maintains compatibility for heterogeneous environments, supporting non-Microsoft initiators. Quick Tip: To set this up, add the iSCSI Target Server role through Server Manager under "File and Storage Services".

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