Chapter 8: Troubleshooting
219
Connection Problems
When you install your Promise product following the instructions in the
Quick
Start Guide
and
User Manual
, you should have little trouble getting your
equipment to work the first time. But connection problems can arise that are not
the User's or Installer's fault. Every conceivable problem cannot be covered in
the documentation but some guidelines could be helpful.
Power Supplies
VTraks are equipped with redundant power supplies. The
advantage of dual power supplies is that, should one fail, the
other will continue powering the subsystem until the faulty one
can be replaced. VTrak is capable of operating on a single power
supply. As a result, if one power supply fails you must watch the
front panel LEDs or WebPAM in order to become aware of the
condition.
The power supplies are hot-swappable, meaning you can leave
the VTrak running when you replace the bad one. Be careful,
however, to remove the faulty power supply and not the good
one, or VTrak will come to an immediate stop and your data will
be unavailable until the system is powered and booted again.
As noted above, if a power supply fan fails, you must replace the
power supply. Without the fan to cool it, the power supply will
overheat and eventually fail anyway.
No tools are required for the procedure. See your page 179 for
instructions on replacing a power supply.
Battery
VTrak uses a battery as backup power for the cache. Should a
power failure occur, the battery enables the cache to hold data up
to 72 hours. The battery recharges during normal VTrak
operation.
In most cases, installing a replacement battery will correct a
marginal or failed condition. The battery is located on the left
cooling unit. Remove the cooling unit for access. The battery is
hot-swappable.
No tools are required for the procedure. See page 185 for
instructions on replacing the battery.
