Specifications

When creating a CSS cluster, you can select specifications as required. For details about the specifications and application scenarios, see Table 1.

**Table 1** Node specifications
CPU Architecture	Specification Type	CPU/Memory Ratio	Application Scenario
x86	Compute-intensive	1:2	This specification provides strong CPUs and is suitable for search scenarios that require high computing performance and low latency, such as e-commerce and app search. It is recommended when ultra-high I/O disks are used. This specification is expensive and has higher reliability than that of the NVMe local disk cluster.
	Disk-intensive	1:8	This specification uses local SAS pass-through disks that have large space. It is applicable to scenarios where a large amount of data is stored, such as searching for logs and public opinions. Generally, it is recommended for cold nodes.
	General computing	1:4	This is the default specification, which is widely used in diverse scenarios and can meet your common requirements.
	Memory-optimized	1:8	This specification provides large memory. It is recommended for scenarios that require large memory and do not need quick response, such as multi-aggregation (in the filedata heap), sorting, and column storage format DocValue (out-of-heap memory).