IBM 084, Installation And User Manual

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Grounding checks
The product must only be connected to a power source that has a safety electrical ground connection.
DANGER: If one or more 5U enclosures go into a rack, the importance of the ground connection to
the rack increases, because the rack will have a larger "EARTH LEAKAGE CURRENT" ("TOUCH
CURRENT").
Examine the ground connection to the rack before the switch-on: an electrical engineer who is qualified
for the appropriate local and national standards must do the examination.
DANGER: HIGH LEAKAGE CURRENT. Earth connection essential before connecting supply.
For more information, see “Electrical safety” on page 5.
System Configurations
For a proper ESS system configuration, review the ESS Deployment Guide and Spectrum Scale RAID
Administration Guide.
Data security
Precautions can help preserve data security.
• Power down your host computer and all attached peripheral devices before beginning installation.
• Each enclosure contains up to 84 removable disk drive modules. Disk drives are fragile. Handle them
with care, and keep them away from strong magnetic fields.
• All the supplied plug-in modules must be in place for the air to flow correctly around the enclosure and
also to complete the internal circuitry. Each row of drive bays must be completely empty or completely
full.
• If the enclosure system is used with modules missing for more than a few minutes, the enclosure can
overheat, causing power failure and data loss. Such use may also invalidate the warranty.
• If you remove a drive module, replace it immediately. If it is faulty, replace it with a drive module of the
same type and capacity.
• Ensure that all disk drives are removed from the enclosure before attempting to manhandle or move the
rack installation.
• Do not abandon your backup routines.
Chapter 3. Installation 23