Introduction to physical division of domains on OceanStor 9000

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Physical division of domains is an effective method to isolate faulty domains from normal ones. When a disk or node in a domain fails, physical division of domains ensures that reliability and security of data in other domains are not affected, and I/O performance of other domains is not compromised during data recovery.

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Division principles of OceanStor 9000's DiskPools
Solid state disks (SSDs) in the second to Nth (N indicates the number of configured SSDs) slots compose a DiskPool that stores small files for enabling SSD acceleration CONFIGURE. Hard disk drives (HDDs) compose another DiskPool.

Division principles of OceanStor 9000's tier
Division principles of OceanStor 9000's tiers: - If you do not add new tier CONFIGUREs, all node pools are of the default tier. - A hotspot data storage tier is created for the data that is frequently accessed. All nodes that have high data processing capabilities and fast response speeds are located in this tier for accelerated response speed and improved storage performance. - A common data storage tier is created for the data that is less-frequently accessed. All nodes that have moderate response speeds but can provide large storage space are located in this tier for reduced deployment and maintenance costs. - It is recommended that node pools in the same tier be of the same type. However, you can adjust the type of node pools in a tier as required.

Adjusting OceanStor 9000's subnet division
Procedure for adjusting OceanStor 9000's subnet division: 1. Log in to DeviceManager. 2. Create a subnet. a. Choose Settings > Cluster Settings > InfoEqualizer > Subnet Management. b. Click Create. In the Create Subnet dialog box, enter the required information and click OK. c. In the Success dialog box that is displayed, click OK. In the subnet list, you can view the newly created subnets.

Division principles of pool nodes for OceanStor 9000 V100R001C30
Division principles of pool nodes for OceanStor 9000 V100R001C30: - All nodes in a node pool must be of the same type. - If a node pool consists of P12, P25, P36, and C36 nodes, the node pool can contain 3 to 20 nodes. If a node pool consists of C72 nodes, the node pool can contain 2 to 10 nodes. - After deployment, nodes in a node pool cannot be modified. - If you want to modify a node, you must delete the node from its original pool first, and then add the node to a new pool.

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