
P/N:  900-10004-00 REV 02  USER GUIDE,  IOSAFE R4   
102
On the ioSafe R4 system open up the front vent door using the four thumbscrew s on the front of 
the unit. All the disk positions are labeled accordingly, identify which disk needs to be replac ed.  
Remove the failed disk, wait approximately 30 seconds, then install the replacement disk and replace 
the front vent door. The front vent door can only be attached in one orientation. If the door doesn’t 
seem to fit, try rotating the door to a different orientation. 
Warning 
Proper seating and latching of the drive is essential to proper operation.  
Verify the replacement drive is fully seated and properly latched before 
reinstalling the front vent door. 
The ioSafe R4 system has hot-swap drive bays, you do not need to power off the ioSafe R4 to 
replace a failed disk.  You can replace the disk while the system is on.  After removing the failed disk, 
wait at least 30 seconds until the disk LED blinks, and then insert the new disk.  
Re-synchronize the Volume If you powered off the R4 system to replace the failed disk, turn the power back on.  The RAID 
volume will automatically re-synchronize the new disk in the background.  The process will take 
several hours depending on disk size.  During the re-sync process, the ioSafe R4 can be used as 
normal, although access will be slower until the volume is done re-synchronizing. 
You will be notified by email when the re-sync process is complete. 
Disaster Recovery Procedure This section instructs how to recover data following a natural disaster such as fire, water, and/or 
physical damage.  The first step in any disaster recovery is to contact your ioSafe disaster recovery 
team leader.  For the most recent version of this document or to locate a team leader go to: 
www.iosafe.com/drsupport   or call           888-984-6723 x430 
Typical steps to recovering from a disaster: 
CAUTION: The presence of fire, heat, smoke, unstable structures, or liquid and electricity can 
create significant risk of bodily harm.  Take care to ensure that your disaster recovery effort is only 
performed in safe working conditions. 
1)
The first step in recovering data from your ioSafe product is to contact a ioSafe disaster 
response team leader: 888-984-6723 x430 
2)
Inspect the R4 for physical damage.  Remove all cables and inspect the receptacles.  Remove 
the front and back doors and inspect the inside of the unit.  See below for descriptions of what 
indicates damage to the R4.  If there is no evidence of damage to the R4, plug the cables back 
in, power up the unit, and verify proper boot and the presence of your data.  During normal 
boot, the blue LED will blink and then show steady on.