Storage server cluster building is a solution that provides high-capacity, high-reliability, and high-performance storage capabilities by connecting multiple storage servers together. The following are the general steps for building a storage server cluster:
　　1. Determine your needs and goals: First, you need to clarify your needs and goals, including storage capacity, performance requirements, reliability requirements, etc. This will help you choose the right hardware and software.
　　2. Select hardware: According to your needs, choose the right hardware, such as storage devices, servers, and network devices. Ensure hardware compatibility and scalability to meet future needs.
　　3. Select operating system and file system: Choose the right operating system and file system according to the hardware. Common operating systems include Linux, Windows, and FreeBSD, and common file systems include EXT4, NTFS, and ZFS.
　　4. Configure the network: Connect the storage server and network devices to ensure that the network connection is reliable and stable. Configure network parameters such as IP address, subnet mask, and gateway.
　　5. Install and configure software: Install and configure the corresponding software according to the selected operating system and file system. For example, on Linux, you can use LVM (Logical Volume Manager) to manage storage space, and on Windows, you can use Windows Storage Spaces to create storage pools.
　　6. Create virtual volumes or storage pools: Use software tools to create virtual volumes or storage pools to combine multiple hard disk spaces to provide unified storage space.
　　7. Configure redundancy and backup: To improve data reliability, you can configure redundancy mechanisms such as RAID (Redundant Array Disks) or distributed storage systems. In addition, it is necessary to back up data regularly.
　　8. Test and optimize: Before putting it into use, test and optimize to ensure that the performance and reliability of the storage server cluster meet expectations.  
　　9. Monitoring and management: Configure monitoring tools to monitor the status and performance of the storage server cluster in real time. Deal with any problems in a timely manner and perform necessary management.
　　10. Expansion and update: As demand increases, you may need to expand the storage server cluster. Update hardware and software regularly to improve performance and reliability.
　　In summary, building a storage server cluster requires clarifying requirements and goals, selecting appropriate hardware and software, configuring the network and installing configuration software, creating virtual volumes or storage pools, configuring redundancy and backup, testing and optimizing, monitoring and managing, and expanding and updating when necessary. Through these steps, you can build a storage server cluster with high capacity, high reliability and high performance.
　　Question 1: How to improve the performance of server cluster storage?
　　Answer: Methods to improve the storage performance of server clusters include:
　　1. Optimize hardware configuration: Select high-performance server hardware and storage devices to ensure sufficient processing power and memory size.
　　2. Use appropriate storage technology: Select appropriate storage technology according to actual needs, such as network attached storage (NAS), storage area network (SAN) or object storage.
　　3. Configure a high-availability cluster: Use cluster software to implement automatic failover and failover of storage servers to improve system availability.
　　4. Implement load balancing: Deploy load balancing devices in front of the storage server cluster to distribute customer requests to storage servers evenly to avoid a single server becoming a performance bottleneck.
　　5. Adjust file system parameters: Adjust file system parameters such as cache size, I/O scheduling algorithm, etc. according to actual application scenarios to optimize storage performance.
　　Question 2: How to ensure the security of data stored in the server cluster?
　　Answer: Methods to ensure the security of data stored in the server cluster include: