Find WWN on Linux

# systool -c fc_host -v
# systool -c fc_transport -v

stop-start sendmail on AIX

1. Verify if sendmail is running. “ps -ef | grep sendmail“.
2. Stop sendmail. “stopsrc -s sendmail”
3. Verify if sendmail is running. “ps -ef | grep sendmail“.
No process should be returned.
4. Start sendmail. “startsrc -s sendmail -a “-bd -q30m”“.
-bd will start the sendmail as a SMTP mail relay router.
-q will the the interval in which the sendmail daemon will process save messages. If none is provided the daemon will default to instant processing.
5. Verify if sendmail is running. “ps -ef | grep sendmail“.

mirror witch not cylinder 0

If you have a mirrored file system in which the first submirror attached does not start on cylinder 0, all additional submirrors you attach must also not start on cylinder 0. If you attempt to attach a submirror starting on cylinder 0 to a mirror in which the original submirror does not start on cylinder 0, the following error message displays ==>

: can't attach labeled submirror to an unlabeled mirror
..
..

Force DCPROMO

if cannot demote (dcpromo) you can use
dcpromo /Forceremoval
and next you must manual remove from AD

Howtodo remove disk from mirror AIX

before remove you must unmirror (detatch)
#unmirrorvg vg-name hdisk-no

then remove disk from volumegroup
#reducevg vg-name hdisk-no

and delete hdisk-no
#rmdev -dl hdisk-no
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Howtodo unmonitor resourcegroup on SUN cluster

# scstat -g ==> for list resource-group
# scswitch -n -M -j resource-name
unmonitor resource-group of cluster

# scswitch -e -M -j resource-name
to monitor resource-group of cluster