LUN requirements for deduplication

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When a thick LUN is created, the relationship between its physical and logical addresses has already been fixed. This does not meet deduplication requirements. For deduplication, you must modify the mapping relationship between the physical and logical addresses.
In addition, deduplication requires space reclamation. The pointer of the thick LUN's logical address cannot be changed. Therefore, the space cannot be reclaimed.

Other related questions:
Whether data deduplication is supported
Data deduplication is provided by the storage devices. 1. Huawei SAN devices do not support data deduplication. 2. NAS devices support data deduplication.

Whether the Dorado series LUN copy feature requires licenses
LUN copy is an optional value-added feature that requires a license.

Whether OceanStor 9000 requires RAID groups and LUNs
RAID groups and LUNs are not required by OceanStor 9000 because it is a distributed file system for big data based on all x86 servers. The entire cluster is a big file system (root directory) where subdirectories and shares can be directly created to use storage space.

Creation of RAID groups and LUNs not required on the OceanStor 9000 online lab
RAID groups and LUNs are not required by the OceanStor 9000 online lab. Different from traditional cluster storage or array storage devices, OceanStor 9000 provides disk arrays on the back end as a distributed file system for big data based on all x86 servers. The entire cluster is a big file system (root directory) where subdirectories and shares can be directly created to use storage space.

Introduction to Dorado thin LUN and thick LUN
SmartThin provides a storage management mode that supports on-demand resource allocation. Instead of allocating all storage space in advance, it first allocates certain storage space and dynamically allocates storage resources based on users' requirements (also called thin LUNs). The other type of storage resources that correspond to thin LUNs is thick LUN. The storage system uses the thin provisioning technology to allocate a fixed storage capacity to a LUN based on the capacity specified for the LUN upon its creation. For details, see: Basic Storage Principles. When using thin LUNs, set the capacity overload of LUNs to not less than 10% of the storage pool capacity. When a host initially reads data from and writes data to a storage system, thick LUNs deliver better performance whereas thin LUNs boasts higher space utilization.

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