System information

VNX™ System Operations6 of 114 Release 7.0
Cautions
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CAUTION
◆ The power sockets at the rear of each uninterruptible power supply (UPS) provide
the blade enclosures, the automatic transfer switches (ATSs), and the Control
Stations with power for a predetermined time period during an AC power outage.
This backup power gives the server enough time to shut down gracefully. To
prevent premature discharge of the UPS batteries during a power outage and
improper shutdown, do not connect any other devices (power loads) to these
sockets.
◆ To prevent data loss, never power down the VNX by simply turning off the red
Emergency Power Off (EPO) switch.
◆ To avoid service disruption to other clients, do not turn off the two cabinet circuit-
breaker switches when the cabinet contains other equipment powered by these
switches that either services other clients or is not part of the server.
◆ EMC strongly recommends that you regularly copy the VNX database backup file
from the Control Station and save it to a remote location for safe keeping. Always
copy the VNX database backup file when hardware or software upgrades are
planned.
◆ Only EMC qualified support personnel should restore the VNX database by using
the VNX database backup file.
◆ Do not manually edit the nas_db database without consulting Customer Service.
Any changes you make might disrupt services.
◆ If you use the CLI to change the Control Station hostname and use the Unisphere
software to manage the server, ensure that you follow this procedure carefully.
Otherwise, file systems cannot be created using the Unisphere software.
User interface choices
The VNX offers flexibility in managing networked storage based on interface
preferences and support environment. This document describes the system
operations of the VNX by using the CLI. You can also perform some of these tasks
by using one of the VNX management applications:
◆ EMC Unisphere software
◆ Microsoft Management Console (MMC) snap-ins
◆ Active Directory Users and Computers (ADUC) extensions
The following provide additional information about managing your VNX for file:
◆ Unisphere online help
◆ Installing Management Applications on VNX for File includes instructions on
launching Unisphere software, and on installing MMC snap-ins and ADUC
extensions.
Note: Unless otherwise directed, log in as nasadmin when executing CLI commands.
Terminology
The VNX Glossary provides a complete list of VNX terminology.