Source: HPE Storage Controller Management (ssacli)

ssacli controller slot=2 show
ssacli controller slot=2 show config
ssacli ctrl all show status
 
# Show all physical drives
ssacli ctrl slot=2 pd all show
ssacli ctrl slot=2 pd all show detail
 
# Show all logical drives
ssacli ctrl slot=2 ld all show
ssacli ctrl slot=2 ld all show detail
 
# Show arrays
ssacli ctrl slot=2 array all show detail

ssacli rescan

Default cache ratio is: Cache Ratio: 10% Read / 90% Write

To set new cache ratio (read/write): ssacli ctrl slot=2 modify cacheratio=50/50

ssacli ctrl slot=2 modify dwc=disable

Set high rebuild priority: ssacli ctrl slot=2 modify rp=high

Show rebuild priority: ssacli ctrl slot=2 modify rp=?

ssacli ctrl slot=2 ld all delete
ssacli controller slot=2 modify hbamode=on

# Create
ssacli ctrl slot=2 create type=ld drives=5I:1:4,5I:1:9,5I:1:12 raid=5 stripsize=1024
 
# Add 2 more drivers:
ssacli ctrl slot=2 ld all show
ssacli ctrl slot=2 pd all show
ssacli ctrl slot=2 ld 2 add drives=5I:1:7,5I:1:10
 
ssacli ctrl slot=2 array B show detail
 
# Resize ld 2 to max size
ssacli ctrl slot=2 ld 2 modify size=max
ssacli ctrl slot=2 array B show detail
 
# Force Linux to detect size change:
echo 1 > /sys/class/scsi_disk/0\:1\:0\:1/device/rescan
 
# echo 1 > /sys/block/sdb/device/rescan
# partprobe /dev/sdb