Dell EqualLogic PS6210XS EqualLogic Group Manager Administrator s Guide PS Ser - Page 347
Troubleshooting Performance Issues, Server and Application Performance Recommendations
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To enable FTP on a NAS cluster: 1. Click Group, expand Group Configuration, and select the NAS cluster. 2. Click the Advanced tab. 3. In the NAS Cluster Access panel, select the Enable FTP Access checkbox. Troubleshooting Performance Issues To effectively manage your storage performance, follow these basic steps to troubleshoot issues: • Fix any failed hardware components in the Dell storage array: - Ensure that the array is fully populated (drives, controllers, and power supplies). - Replace any failed disks or failed control modules. • Configure all network interfaces: - Make sure all the network interfaces on the group members are configured and functional. - Configure data center bridging (DCB) on your network to make use of iSCSI. • Fix or upgrade network hardware: - Correct any network hardware problems that are causing poor performance. - Fix switches or add network bandwidth, if needed. - Add new hardware for better performance. • Fix or upgrade server hardware: - Correct any server hardware problems that are causing poor performance. - Add memory, update drivers or network adapters, or use multipathing I/O, if needed to improve performance. • Optimize applications: - Correct any application behavior that is causing poor performance. The goal is to reduce the load on the group. For example, be sure database volumes are provisioned correctly. You might want to place data and log files on different volumes. • Optimize your PS Series group configuration: - Verify that your pools have sufficient capacity by adding members. - Verify that your RAID policy is appropriate for a group member. For more information about RAID policies on PS Series systems, review the Dell Technical Report entitled PS Series Storage Arrays: Choosing a Member RAID Policy, which you can download from the following location: http://en.community.dell.com/dell-groups/dtcmedia/m/mediagallery/19861480. - Use higher-performing disk drives. - Ensure that all group members have the latest PS Series firmware. Server and Application Performance Recommendations You might be able to improve performance by following these general recommendations: • Make sure you have sufficient server memory. Adding memory can decrease the read I/O load on the storage. • Make sure you have the latest drivers for your operating system. • Add high-performance network interfaces or host bus adapters to servers. • Consider using multipathing (or MPIO), which provides a high-performance and highly available path between a server and storage. Use the Dell EqualLogic Host Integration Tools for a multipathing solution. • Make sure the server Ethernet ports, PCI bus, and CPU are rated for the workload. • If the server is a clustered computer, isolate cluster network traffic from iSCSI storage traffic. Check for other network traffic interference. • Make sure the application is configured properly so that I/O is performed efficiently. About Monitoring 347