OWC MerCury raCk PrO IntrOduCtIOn
1.5.2 Fan Alarm Mute Button
In the event one of the fans within the OWC Mercury Rack Pro fails, an alarm will sound.
The “Fan Alarm Mute” button located on the rear panel of the unit will mute the alarm. It
is recommended to replace the failed fan as soon as possible in order to adequately cool
the unit, prevent damage to components, and avoid data loss.
1.5.3 RAID Selector Switches
To adjust your RAID settings, there are 3 switches on
the back of the OWC Mercury Rack Pro.
Use the silkscreened chart as a guide when adjust-
ing the switches to the desired RAID setting. Pro-
ceed to section 1.7 for instructions on changing the
RAID levels on the OWC Mercury Rack Pro.
1.6 PRECONFIGURED STORAGE SOLUTIONS
If you purchased your Rack Pro as a preconfigured solution with hard drives included, the
drives have been configured as a RAID 5 volume and that volume has been preformatted. To
install the drives, see section 2.1. For formatting information, including how to format your
Rack Pro for Mac or Windows, go to: h t t p:// www.macsales.com/format
1.7 RAID SETTINGS
1.7.1 Changing the RAID Mode
IMPORTANT NOTE: Drives of identical model are required for all RAID types other than
Clear/JBOD (Independent Drive) mode and Combine/JBOD (SPAN)
mode.
IMPORTANT NOTE: Changing the RAID settings requires you to set the Rack Pro to
“Clear RAID” mode between each mode change.
3
To switch or clear RAID modes, follow these three steps (continued on next page):
1. With the OWC Mercury Rack Pro turned off, adjust the switches on the back of the unit
to the desired setting (either to “Clear RAID” mode or to a RAID level).
2. While holding down the “Set/Mute” button, power on the OWC Mercury Rack Pro.
Keep holding the “Set/Mute” button until you hear a full beep (you may hear shorter
chirps or beeps while the unit is setting itself into the RAID mode). The lights on the
Rack Pro will also flash during this process and will stop flashing when complete.
WARNING: Changing the RAID setup will require you to
reformat the drives. Reformatting will delete all of the
existing data on the drives!