====== ssacli ======

Source: [[https://be-virtual.net/hpe-storage-controller-management-ssacli/|HPE Storage Controller Management (ssacli) ]]

<code bash>
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
</code>

====== rescan for new drives ======

''ssacli rescan''

====== cache ratio ======
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''

====== disable physical drive write cache ======
''ssacli ctrl slot=2 modify dwc=disable''

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

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

====== switch to HBA mode ======
<code bash>
ssacli ctrl slot=2 ld all delete
ssacli controller slot=2 modify hbamode=on
</code>



===== RAID5 =====

<code bash>
# 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

</code>