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dolcie Computer Services, Racking Support Service

Here are a few tricks to un-rack your machines well :

• Turn off your running services gracefully, meaning turning off all running services on it such as Data Base with the appropriate scripts so the data stays in a coherent state. Then perform a "sync" on linux or stop the services via the services manager in Windows.
• Turn off the machine gracefully with the 'start -> shutdown' on Windows or a 'halt' on linux. Then only you can push the power button to bring the machine to a physical stop.
• Remove ethernet cable, remove monitor, mouse and keyboard or KVM equipment such as Avocent's DSR equipment.
• Make sure the machine is not connected directly to a SAN ( Storage Area Network) or a tape drive, or any kind of SCSI or serial device.
• Remove the power source ( Warning: sometimes there is more than 1, 2 are common).
• Pull the rack removing the eventual screws on the fron panel, not the screws of the rails, the one from the machine to the cabinet.
• Lift or push the buttons that prevent you from pulling the machine too much before it comes off the rail. Watch your fingers, the machine may be heavier than you think or released of one rail but stuck on the other one. You might want to have someone assisting you to keep it elevated as you get the last fasteners. They are many kind of railings, HP has special purple temp wheels that allow you to hold the machine on the rack as you unscrew screws attaching the machine to the rail. Most of the time the machine just slides in the rails, no screws needed to unrack the majority of machines.
• Well Done!

Here are a few tricks to rack your machines well :

• Make sure you count the number of U of your machine. Then you place the railing leaving the bottom 1U of your cabinet free, so the air can circulate around the machine, from the bottom.
• Install the rails as they were in the previous locations. The telescopics arms extend in the front of the cabinet. The hooks need to be located inside of the cabinet grips. Some cabinets need some special nuts, bolts and other fancy combinations to attach the machine correctly in it.
• Once the rails are in, make sure they are even from front to bottom and left and right, basically parallel to the ground and at the same level.
• Lift the machine and make sure the rack server is not upside down. It's easier to see with the front panel plate off.
• Rack it, when it starts blocking, just push the buttons on each side simultaneously and push the server along the rails (watch your fingers again!) , if not a button it might be a little level arm to push.
• If server does not go all the way , you can giggle it but not too much. A loose SCSI controller, Power supply or other PCI card might prevent you from booting your machine.
• Plugs all the cable back in, if applicable plug the two power sources in different powert towers and each power tower in different whips. So you a have fully redundant system.
• Ready, power up!
• Change the network settings if needed for the new location . On windows go to Start -> Control Panel-> Network Adapters -> properties -> TCP/IP. On Linux go to /etc/sysconfig/network-scripts/ifcfg-eth0 -> vi changes -> network service restart.
• Tighten your cabinet to the ground attaching the four feet securely to the floor. It's basically 4 screws to unscrew until they touch the ground with full contact.
• Your machine is racked well. Don't drink or smoke in the data center, celebrate outside! Eric

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