Which of the following is a storage system that can be connected to multiple servers through an iSCSI connection?

The correct answer is a storage area network (SAN). A SAN is designed specifically to connect multiple servers to a centralized storage resource via high-speed network protocols, such as iSCSI (Internet Small Computer Systems Interface). This setup enables the servers to access storage devices as if they were locally attached, improving performance and resource utilization.

In a SAN environment, data can be transferred at high speeds, allowing multiple servers to share the same storage infrastructure while also providing redundancy and fault tolerance. The SAN architecture is scalable, meaning additional storage devices can be added without disrupting existing operations, which is crucial for enterprises managing large amounts of data.

Other storage options such as JBOD (Just a Bunch of Disks), DAS (Direct Attached Storage), and NAS (Network Attached Storage) typically serve different functions. JBOD refers to a collection of physical disks that do not provide any management or organization; DAS connects storage directly to a server, limiting access to that single server, and NAS provides file-level access over a network but is generally not as high-performing as SAN in block-level storage scenarios. Thus, SAN is the most suitable option for connecting multiple servers through iSCSI.