Performance indicators that need to be considered for OLAP services

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If OLTP services are running on the storage system, performance indicators to be monitored must be obtained beforehand. For details, see Monitoring Indicators

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Performance indicators that need to be considered for OLTP services
If OLTP services are running on the storage system, performance indicators to be monitored must be obtained beforehand. For details, see Monitoring Indicators

Does the mapping between license activation codes and AR models need to be considered
For licenses of V2R1, there is no need to consider the mapping between license activation codes and AR models. For licenses of V2R2 and later versions: - For capacity licenses including AR CT license and AR IVR license, there is no need to consider the mapping between license activation codes and AR models. - For feature licenses including AR150&160&200 value-added service package for data services and AR1200 value-added service package for security services, the mapping between license activation codes and AR models needs to be considered.

Performance indicators of OceanStor V3 storage systems
Performance indicators include IOPS, bandwidth, and latency. For details, see Performance Indicators .

Why do I need to consider the interface MTU when setting the MSS of TCP packets
The maximum segment size (MSS) is negotiated during TCP connection setup. The MSS determines the maximum length of a TCP packet. Some upper-layer applications such as HTTP reset the Don't fragment (DF) field of IP packets to prevent TCP packets from being fragmented. If the DF field is reset and the interface MTU is smaller than the MSS, the router discards TCP packets because TCP packets cannot be fragmented. A TCP packet has the TCP header and IP header; therefore, the MSS value plus all the header lengths cannot exceed the MTU. The MTUs supported by Ethernet and PPPoE are 1500 bytes and 1492 bytes respectively. You are advised to set the MSS to 1200 bytes. If the interface MTU is changed or encapsulation packets of some special applications cannot be fragmented in PPPoE, L3VPN, and IPSec scenarios, note the MSS setting.

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