Colleagues customized Huawei's primary and backup disaster recovery solution for the customer. The customer already has a set of OceanStor 2600TV2 and a third-party storage system. The two sets of equipment are placed in two data centers to implement the primary and backup disaster recovery. The solution is?

Engineer C completes the installation of Huawei's distributed storage on site, and then powers on to configure big data services.
In the following description of the big data business configuration process, which of the following is the correct order?
1. Create an account
2. Configure the subnet
3. Create a file system
4. Associated File System
5. Create NameNode Zone
6. Create Global Zone

An enterprise customer plans to purchase Huawei Oceanstor 9000 to meet its 10PB data storage needs. The customer chooses Oceanstor 9000 C36 nodes, which are equipped with 4T SATA disks, and 4+2 distributed RAID storage methods are used between nodes.
Assuming that the system loss (including the possession of metadata and system data, hard disk loss, etc.) is 10%, in theory, how many C36 nodes does the customer need to purchase at least to meet its business data storage requirements?

NFS is a method of sharing disk files between UNIX operating systems. NFS is also a file system protocol that allows applications on a client to store and obtain data from server disks through a network.

A replacement controller includes how many new fan modules?