Traditional pools use dedicated spare space the dell

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Traditional pools use dedicated spare space. The Dell EMC Unity Hybrid systems reserve one spare drive per 31 drives. The system replaces a faulted drive in a pool with a drive of the same type, and the same or greater size of the faulted disk. HOMOGENEOUS POOL HETEROGENEOUS POOL Hard drives arranged in RAID Groups Hot spares: Same type of the faulted drive Capacity>=capacity of the faulted drive Flash drives RAID Group1[RG1] RGRRGRRGRFlash drives SAS drives Hot spares
Page 23 © Copyright 2019 Dell Inc. Error! No text of specified style in document.Dell EMC Unity Concepts and Features -student guide Dynamic Pools The features and benefits of dynamic pools are: Supported on the Dell EMC Unity physical hardware only (XT models) All pools are built from SAS-Flash drives only. All-Flash pools on the supported storage systems are dynamic pools by default. It enables improved pool planning, provisioning, and delivering a better cost per GB. The user must select the RAID type when creating a dynamic pool Provisioned pools to a specific capacity The user can later expand the pool by a specific capacity, even if that means adding only a single drive. It supports the mix of different Flash drive sizes. Balanced workloads Pool moves data around when drives are added This automated process spread out the user data and workloads across more drives, thus reducing the wear per drive within the pool The major benefits of dynamic pools are the time it takes to rebuild a failed drive. Dynamic pools do not require hot spares. Spare space is reserved within the dynamic pool to rebuild a faulted drive. DYNAMIC POOL Spare space Flash drives are added as needed
Page 24 © Copyright 2019 Dell Inc. Error! No text of specified style in document.Dell EMC Unity Concepts and Features -student guide NAS Server The Dell EMC Unity platform has a single-enclosure, two storage processor architecture with no concept of designated hardware for the file services. File data is served by using virtual file servers known as NAS Servers. A NAS Server must be created before creating file systems. NAS Servers are used for NAS protocols only. NAS clients can connect to file systems using SMB, NFS, or both simultaneously; iSCSI block storage is provided natively and not through a NAS Server. Each NAS Server is a separate file server. Users on one NAS Server cannot access data on another NAS Server. Each NAS Server has a separate configuration with independent network interfaces, sharing protocols, directory services, NDMP backup, and security. File systems are provisioned by selecting a storage pool and a previously created NAS Server. Client 1 Client 2 Client 3 Client 4
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USB flash drive, Computer file, Dell Inc, Network attached storage, EMC Unity Platform

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