ScaleIO cannot tell you which devices to add as SDS devices. You, as the sysadmin should know which hosts you have , which applications are installed on them, which devices are being used (contain partitions / FS formatted etc.) and which devices are free to be used for ScaleIO SDS.  Example: If it's a Linux node, you can run fdisk -l command to see the device list on that host -> if all hosts are identical you can use the same devices for each SDS.
Hello experts.I know the ip address of the sds,but I don't konw how many devices are there in this sds.How can I query the devices by using scli?Thank you.
query the devices in sds