Dell PowerVault MD3200 CLI Guide - Page 55

For optimal performance in a multi-user database or file system storage environment, set the segment size to minimize the number of physical disks needed to satisfy an I/O request. Using a single physical disk for a single request leaves other physical disks available to simultaneously service other requests. After you have finished creating the disk groups and virtual disks by using the autoConfigure storageArray command, you can further define the properties of the virtual disks in a configuration using the set virtualDisk command. (See "Modifying Your Configuration" on page 55.) Example of the Auto Configuration Command client>smcli 123.45.67.89 -c "autoConfigure storageArray physicalDiskType=SAS raidLevel=5 diskGroupWidth=8 diskGroupCount=3 virtualDisksPerGroupCount=4 hotSpareCount=2 segmentSize=8;" The command in this example creates a storage array configuration that uses SAS physical disks set to RAID level 5. Three disk groups are created. Each disk group consists of eight physical disks configured into four virtual disks. The storage array has two hot spares, and segment size for each virtual disk is 8 KB. Modifying Your Configuration After creating your initial configuration, modify the properties of the configuration to ensure that it meets your requirements for data storage. Use the following commands to modify the properties of your configuration: • autoConfigure storageArray • create virtualDisk Use the set commands to modify a storage array configuration. This section explains how to modify the following properties: • Storage array password • Simple Mail Transport Protocol (SMTP) and Simple Network Management Protocol (SNMP) alerts • RAID controller module clocks • Storage array host type • Global hot spares Configuring a Storage Array 55