Dell VNXe3200 Unisphere Central 4.0 Installation Guide - Page 11
Management Settings > Metrics, Create Metrics Storage
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Installation Guide 7. Confirm the settings and click Finish. New Hard Disk (adding) displays in the hardware devices list. Click OK. 8. The virtual disk appears in the hardware devices list. The virtual disk you created will now appear in the list of devices on which to allocate metrics storage when you run the Unisphere Central Create Metrics Storage wizard. Allocate storage space for metrics data Use the Unisphere Central Create Metrics Storage wizard to allocate storage space for metrics data, either on the virtual disk you created on the Unisphere Central VM using vSphere Client or on an existing datastore if you deployed Unisphere Central through vCenter. 1. Click the Settings icon and select Management Settings > Metrics. 2. Select Create Metrics Storage to start the wizard. The Unisphere Central online help describes how to use the wizard to create metrics storage. Enable metrics collection By default, metrics data collection starts immediately after storage is successfully allocated. If you choose to not start collecting metrics data immediately after storage is successfully configured, you can enable metrics collection manually. 1. Click the Settings icon and select Management Settings > Metrics. 2. Select Enable Metrics Collection. The Unisphere Central online help describes how to enable metrics collection. Metrics storage sizing recommendations The Create Metrics Storage (and Expand Metrics Storage) wizard recommends a storage size based on the data retention values selected and the number of VNX, CX4, VNXe, and vVNX systems being monitored. Refer to the following table for detailed information about the factors that go into calculating the recommended storage size. Table 6 Metrics sizing recommendations Small Systems (VNX and 10 CS4) Systems (Unity, 75 UnityVSA, VNXe, and vVNX) Storage resources (LUNs and file systems) 10000 Disks 5000 CPU 2 Memory (GB) 4 Recommended 25 storage size (GB) Medium 25 150 25000 10000 4 6 65 Large 50 300 50000 20000 8 8 120 The total number of objects in small, medium, or large Unity, UnityVSA, VNXe, or vVNX environments is substantially lower than the number of objects in the Configure metrics collection 11