ASHRAE
ASHRAE ASHRAE. – American Society of Heating, Refrigerating and Air-Conditioning Engineers
Datacentre – classifications
Datacentre – classifications Tier Level Requirements 1 Single non-redundant distribution path serving the IT equipment Non-redundant capacity components Basic site infrastructure guaranteeing 99.671% availability 2 Fulfils all Tier 1 requirements Redundant site infrastructure capacity components guaranteeing 99.741% availability 3 Fulfils all Tier 1 & Tier 2 requirements Multiple independent distribution paths serving the IT equipment […]
Copying a filesystem with Veritas
Copying a filesystem with Veritas This procedure is to create an exact copy of a Veritas filesystem. You will need enough spare disks in your volume group, and ideally anything using the filesystem should be killed. create a mirror # vxassist -g tier3dg mirror tier3fs # vxprint tier3fs Disk group: tier3dg TY NAME ASSOC KSTATE […]
VxVM – Volume Management
Volume Management Add a volume (Normal UFS mounted filesystem) # # vxassist -g datadg maxsize # # iostat -En > /tmp/iostat_en_<date> # # devfsadm # # iostat -En > /tmp/iostat_en_<date>.NEW # # luxadm probe # If no disk appears add disk manually ## # vxdmpadm listctlr all ## # cfgadm -c configure c2 ## # […]
Shell – Finding Large Files – UNIX
Shell – Finding Large Files – UNIX [bash] find / -size +2000 -exec ls -s {} \; | sort -nr | more [/bash] [bash] du -sk * | sort -nk 1 [/bash]
Screen – /usr/bin/screen
Screen – /usr/bin/screen Useful commands: Screen ^AC – create new session ^AA – swap to previous session (flip back/forth) ^AN – go to next session ^AP – go to previous session ^AD – disconnect ^AK – kill current session