Disk Array and Storage Server are both technologies used for data storage and management, but they have some important differences:

　　Functions and uses:

　　Disk array: A disk array is a collection of physical hard drives that are organized together to provide greater storage capacity, higher performance, and/or greater data redundancy. Disk arrays are typically used in servers or workstations to provide high-performance data storage and redundant backup.

　　Storage server: A storage server is a server dedicated to data storage and management. They typically include storage devices (such as hard drives, solid-state drives, or tape drives), storage management software, and network connections. The main purpose of a storage server is to provide large-capacity central data storage and sharing, usually in enterprise-level data centers.

　　Data management:

　　Disk array: Disk array mainly focuses on the management and performance optimization of hard disk. They often offer RAID (redundant array of disks) configurations to provide data redundancy and performance improvements.

　　Storage server: Storage server not only provides data storage, but also provides advanced data management functions, such as data backup, snapshots, data compression, data deduplication, etc. They also typically have more networking options so multiple devices can access the storage.

　　Internet connection:

　　Disk array: A disk array is usually directly connected to the host server and manages data through the host's file system.

　　Storage server: Storage server is usually used together with the network and can provide storage services through network protocols (such as NFS, SMB/CIFS, iSCSI, etc.). This means multiple servers or clients can access and share storage over the network.

　　Size:

　　Disk array: Disk array is usually small in size and suitable for the storage needs of a single server or workstation.

　　Storage server: Storage servers are usually large-scale and suitable for the large-capacity storage needs of enterprise-level data centers.

　　Data redundancy:

　　Disk array: Disk array provides data redundancy through RAID configuration to prevent data loss caused by hard disk failure.

　　Storage servers: Storage servers typically offer more advanced redundancy and backup options to ensure data availability and integrity.

　　In short, disk arrays are mainly used to provide high-performance storage solutions for a single server, while storage servers are more suitable for large-scale data storage and sharing, and have more data management and redundancy functions. Which solution you choose depends on your specific needs and budget. In some cases, they can also be combined to provide a more comprehensive data storage and management solution.