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doc-exports/docs/css/umn/css_02_0008.html
zhengxiu 93d856d5c5 css umn 25.6.0 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: zhengxiu <zhengxiu@huawei.com>
Co-committed-by: zhengxiu <zhengxiu@huawei.com>
2025-11-25 11:34:43 +00:00

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What Storage Options Are Available for a CSS Cluster?

CSS uses EVS and local disks to store your indexes. During cluster creation, you can specify the EVS disk type and specifications (the EVS disk size).

  • EVS disk types include common I/O, high I/O, ultra-high I/O, and extreme SSD.
  • The EVS disk size varies depending on the node specifications you selected during cluster creation.

During cluster creation, a certain number of EVS disks can be attached to each node (corresponding to an ECS). You can calculate the total storage capacity of a CSS cluster based on the sizes of EVS disks attached to different ECSs. The EVS disk size is determined by the node specifications you selected when creating the cluster.

Parent topic: General Consulting