The USG device configures multiple read and write groups for normal access


The USG device is configured with multiple groups, and can be networked to the device as long as the correct community name is available.

Other related questions:
What is IAD's default reading group and writing group
IAD default read group and write groups are as follows, the relevant parameters can be modified in the advanced configuration >eSight configuration of the IAD web interface Reading group:Public@123 Writing group:Private@123 Trap group:Public@123

Reason why read and write performance is deteriorated
Reason why read and write performance is deteriorated: Front-end links are faulty (error codes or the host) or the system has slow disks. Error codes: Check the content of error codes. Slow disk: Check the content of slow disks. Host: Check whether the HBA card, network adapter, or upper-layer software is faulty.

Method used to locate LUNs with poor read and write performance
Method used to locate LUNs with poor read and write performance: 1. The LUN write policy is write through. Locate the cause why the LUN write policy is write through. 2. If the host interface is iSCSI, check whether the network rate is 1 Gbit/s, whether the network is stable, and whether ping packets are lost. If the Fibre Channel or SAS network is used, log in to the storage's OSM page to check whether an alarm indicating that the front end encounters continuous error codes is reported. 3. Check whether slow disks exist in RAID groups. Specifically, run iostat -x 1 to check whether some disks differ from other disks (the util value of one or two disks is greater than that of other disks and reaches 100. If the util value of all disks in the RAID group reaches about 100, the configurations are incorrect and back-end disks are slow disks). If slow disks exist, replace them. 4. If a file system exists on the host, the file system produces enormous fragments when the disk space utilization rate exceeds 90%, causing the deterioration of read/write performance. You are advised to use disk space correctly.

Whether multiple S series switches can form a VRRP group
S600-E series switches do not support VRRP. S series switches (S1700 excluded) support a VRRP group composed of one master and multiple backups. Typically, VRRP is configured on two devices.

Can SNMP read and write community names be configured the same on a CE switch
SNMP read and write community names cannot be the same on a CE switch. Otherwise, the latest configuration will overwrite the previous one.

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