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C3683M (3/09) 19
Hard Drive Array Installation
The NSM5200 stores data using RAID (Redundant Array of Independent Disks) technology. All NSM5200 Series recorders operate in a RAID 6
configuration to maximize fault tolerance and enhance disk-access performance.
The NSM5200 has a single RAID controller that manages a single arr
ay of 12 drives. The RAID 6 configuration allows any 2 out of the 12 drives
to fail without any data loss. On any drive failure, the user is notified of the failure and the unit continues to operate.
INSTALLING HARD DRIVE CARRIERS
After you have securely mounted the NSM5200, install the 12 hard drives in the front of the chassis. Each hard drive is already mounted in its
own drive carrier so you can easily install and remove a hard drive, even while the unit is operating.
NOTE: You must install all 12 hard drive carriers before you apply power to the NSM5200. The hard drive bays are numbered 1 through 12
(st
arting from the left side). The hard drives are not preconfigured and can be placed in any empty hard drive bay.
To install the hard drive carriers:
1. Review all instructions in thi
s section before proceeding.
2. Make sure you protect the unit and its components, which are susceptible to damage from improper handling and ESD. Refer to the Safe
Ha
ndling of Hard Drives document for more information.
Figure 14. Opening the Front Bezel
3. Unlock and open the front bezel.
WARNING: If a third drive in the same array fails before either of the first two drives have been replaced, and have completed the rebuild
process, the array will go off line and data loss will occur.
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