cellcli and dcli command in EXADATA

to check storage server in exadata
dcli -l root -g cell_group cellcli -e list cell

to monitored, configured, maintained by using cellcli command
$ cellcli
CellCLI: Release 11.2.2.2.2 - Production on Fri
May 06 08:46:22 EDT 2011
Cell Efficiency Ratio: 92M
CellCLI> help
HELP [topic]
Available Topics:

ALTER
ALTER ALERTHISTORY
ALTER CELL
ALTER CELLDISK
ALTER GRIDDISK
ALTER IORMPLAN
ALTER LUN
ALTER PHYSICALDISK
ALTER QUARANTINE
ALTER THRESHOLD
ASSIGN KEY
CALIBRATE
CREATE
CREATE CELL
CREATE CELLDISK
CREATE FLASHCACHE
CREATE GRIDDISK
CREATE KEY
CREATE QUARANTINE
CREATE THRESHOLD
DESCRIBE
DROP
DROP ALERTHISTORY
DROP CELL
DROP CELLDISK
DROP FLASHCACHE
DROP GRIDDISK
DROP QUARANTINE
DROP THRESHOLD
EXPORT CELLDISK
IMPORT CELLDISK
LIST
LIST ACTIVEREQUEST
LIST ALERTDEFINITION
LIST ALERTHISTORY
LIST CELL
LIST CELLDISK
LIST FLASHCACHE
LIST FLASHCACHECONTENT
LIST GRIDDISK
LIST IORMPLAN
LIST KEY
LIST LUN
LIST METRICCURRENT
LIST METRICDEFINITION
LIST METRICHISTORY
LIST PHYSICALDISK
LIST QUARANTINE
LIST THRESHOLD
SET
SPOOL

START

To obtain a cross-cell view of cell server configuration, metrics, alerts, and other information
dcli 
this basically removed authorized_keys entries from the celladmin's ~/.ssh directory on each cell server
[oracle@cm01dbm01 ~]$ dcli -g cell_group
--unkey
cm01cel01: ssh key dropped
cm01cel02: ssh key dropped
cm01cel03: ssh key dropped
[oracle@cm01dbm01 ~]$
Now, we'll re-establish SSH equivalency
[oracle@cm01dbm01 ~]$ dcli -g cell_group -k
celladmin@cm01cel02's password:
celladmin@cm01cel03's password:
celladmin@cm01cel01's password:
cm01cel01: ssh key added
cm01cel02: ssh key added
cm01cel03: ssh key added

[oracle@cm01dbm01 ~]$

to list cell 
dcli -g cell_group cellcli -e list cell
cm01cel01: cm01cel01 online
cm01cel02: cm01cel02 online

cm01cel03: cm01cel03 online

to check cell group
cat cell_group
cm01cel01
cm01cel02

cm01cel03

To check the amount of FlashCache used in each cel
$ dcli -g cell_group cellcli -e list \
metriccurrent where name=' FC_BY_USED'
cm01cel01: FC_BY_USED FLASHCACHE 13,316 MB
cm01cel02: FC_BY_USED FLASHCACHE 13,344 MB

cm01cel03: FC_BY_USED FLASHCACHE 13,301 MB

f you were only interested in cell servers cm01cel02 and cm01cel03, use the "-c" option as below:
 [oracle@cm01dbm01 ~]$ dcli -c
cm01cel02,cm01cel03 cellcli -e list metriccurrent where name='
FC_BY_USED'
cm01cel02: FC_BY_USED FLASHCACHE 13,344 MB
cm01cel03: FC_BY_USED FLASHCACHE 13,301 MB
[oracle@cm01dbm01 ~]$