Reference: https://www.doit.com.cn/p/author/xigua
Reference: http://www.doit.com.cn/p/196056.html
illustrate:
The IBM XIV storage system is delivered in a standard IBM T42 rack, fully connected to 15 nodes.
A fully equipped XIV consists of 15 nodes, including 6 Interface Nodes (Interface Module) + 9 Interface Nodes (Interface Module). Each node is an Intel X86 server optimized for data storage and has 12 SATA drives.
