Effects of OceanStor 9000 InfoEqualizer on file distribution


InfoEqualizer has no impact on the file slice distribution in OceanStor 9000. InfoEqualizer only allocates the entry for the client to access OceanStor 9000. The data protection mechanism determines how to distribute the files written into the system from the client.
Factors that affect the file distribution are as follows:
1. Redundancy ratio of files in a folder
The redundancy ratio of files in a folder determines the number of file slices, affecting the file slice distribution on each node in the system.
2. The InfoTier feature
When a file system contains multiple InfoTier node pools with corresponding policies, files are distributed in the corresponding node pool and migrated among node pools based on the policies.
When the file system has no InfoTier policy configured, the file slices are randomly distributed to an InfoTier node pool.
Slices of a file will not be distributed to different node pools.

Other related questions:
Does InfoEqualizer affect File Distribution?
Distribution of file fragments in the OceanStor 9000 is not affected by InfoEqualizer. InfoEqualizer is only responsible for distributing the entries for clients to access theOceanStor 9000. How are file fragments written by clients distributed in the system is determined by the data protection mechanism. The following factors can affect file distribution: Redundancy ratio of a folder where files reside The redundancy ratio of a file where files reside determines the number of file fragments, thereby affecting distribution of file fragments in the system. InfoTier If a file system has multiple InfoTier node pools for which a specific policy has been set, files will be distributed to or migrated among the node pools according to the policy. If InfoTier is not available for the file system, file fragments will be distributed to a InfoTier node pool at random. Fragments of a file can only be distributed to nodes in a InfoTier node pool and will not be distributed to nodes cross nodes pools.

Application instances of OceanStor 9000 InfoEqualizer
The feature guide describes the application instances of OceanStor 9000 InfoEqualizer from the following aspects: requirement analysis, application planning, CONFIGURE operations, and verification. Obtain the feature guide from the following websites: - OceanStor 9000 V100R001C01 InfoEqualizer Feature Guide - OceanStor 9000 V100R001C20 InfoEqualizer Feature Guide - OceanStor 9000 V100R001C30 File System Feature Guide

OceanStor 9000 InfoEqualizer feature definition
OceanStor 9000 InfoEqualizer can intelligently distribute client access requests among storage nodes, improving service performance and reliability.

The OceanStor 9000 InfoEqualizer license status
Automatic load balancing based on CPU usage, node connections, node throughput, or comprehensive node load requires the OceanStor 9000 InfoEqualizer feature license. Other functions do not require a license.

Application restrictions of OceanStor 9000 InfoEqualizer
Application restrictions of OceanStor 9000 InfoEqualizer are as follows: - The DNS resolution service of OceanStor 9000 only responds to domain name resolution requests in OceanStor 9000. This service never responds to external domain name resolution requests. - A subnet can be divided into multiple zones, whereas a zone can belong to only one subnet. - A zone can contain multiple nodes, whereas a node can belong to only one zone. - A node can be added to only one subnet, that is, one node can only be accessed by clients on one subnet. - The DNS service IP addresses of subnets cannot be the same as the InfoEqualizer DSN IP address. - Each subnet must belong to different network segments. - A zone must contain at least two nodes for node failover.

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