Whether the SmartCache feature of the OceanStor V3 Series supports online expansion

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The SmartCache feature supports online expansion.

Other related questions:
Whether the SmartCache feature of the OceanStor V3 Series supports read and write cache
The SmartCache feature only supports read cache.

SmartCache feature of OceanStor T series/V3 series
SmartCache is an intelligent caching technology that uses SSDs as read cache resources. This technology creates a SmartCache pool of SSDs and migrates frequently accessed random small I/Os from conventional hard disk drives (HDDs) to the high-speed cache pool. The data read speed of SSDs is much faster than that of HDDs, so SmartCache greatly shrinks the hot data response time and improves the system performance. SmartCache divides an intelligent cache pool into partitions that provide fine-grained SSD cache resources for services. Different services can share one partition or use different partitions. The partitions are isolated from each other. More cache resources can be allocated to key applications to ensure application performance. SmartCache does not interrupt existing services or compromises data reliability.

Do OceanStor T series/V3 series products support SmartCache?
OceanStor T or V3 series storage systems support the SmartCache feature.

Whether OceanStor T Series support online capacity expansion of controllers
OceanStor T Series V1 storage products do not support online capacity expansion of controllers. OceanStor T Series V1 storage products support only dual controllers.

Whether OceanStor T Series support online capacity expansion of disks
OceanStor T Series support online capacity expansion of disks.

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