Quota tree function of V3 series unified storage


A quota tree is the root directory of a file system. Quota trees are special directories. The following distinguishes a quota tree from a common directory:
1. Quota trees can only be created, deleted, or renamed by administrators using the command-line interface (CLI) or graphical user interface (GUI). Only empty quota trees can be deleted.
2. Quota trees can be shared using protocols and cannot be renamed or deleted during sharing.
3. Administrators can manage quotas such as file quantity or capacity under the quota tree.

Other related questions:
What's the logical port of V3 series unified storage?
Logical ports, used for file services' running, are created based on physical Ethernet ports, bond ports, or VLANs. If the parent port of a logical port running file services is faulty, an IP failover will be triggered and the services will automatically fail over to another available port based on the failover policy. If the owning controller of the logical port's current parent port is different from the file system's owning controller, the system will need to transfer I/Os between controllers, decreasing system performance.

IP failover policy of V3 series unified storage
During the system initialization, the system automatically adds all Ethernet ports and bond ports of clusters to the default failover group. An IP address fails over first to the port at the same position in the peer controller, then to ports at other positions in the peer controller, and last to ports in the local controller. It can float between various interface modules. Which port it floats to is related with the port location, not the port rate. Later versions will allow you to customize failover groups.

RAID levels supported by unified storage systems
RAID policies (levels) supported by unified storage systems: 0, 1, 3, 5, 6, 10, 50

Adding remote devices for V3 series unified storage systems
See section "Adding a Remote Device" in Remote Replication Feature Guide for Block, which is available at http://support.huawei.com/enterprise/docinforeader.action?contentId=DOC1000084218&idAbsPath=7919749|7941815|21430818|21462748|21041235.

Precautions for creating a remote link for a V3 series unified storage system
The precautions for creating a remote link for a V3 series unified storage system V300R002 are as follows: 1. If a Fibre Channel network is used, set Link Type to FC. If an IP network is used, set Link Type to iSCSI. 2. If the storage systems at the two ends are of different versions, initiate link creation from the storage system with the later version. Otherwise, the link creation fails.

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