NEC Express 5800, User Manual, Page: 48 / 719

48
Storage Management
Make sure to pay attention to the following points to manage the server that can install and
connect a large capacity storage device.
Disk Management
Improving the fault-tolerance of the hard disk drive can directly result in improving the
reliability of the whole system.
Data loss can be prevented and the utilization of hard disk drive can be improved by setting
redundancy of hard disk drive by grouping with use of optional RAID controller (disk array
controller).
The RAID system management utility can monitor RAID system status totally to handle the
failure of the hard disk drive in a short period of time with the linkage of NEC ESMPRO
Manager and NEC ESMPRO Agent.
RAID Controller Function Function Outline
RAID Level This function supports RAID 0, 1, 5, 6, 10 and 50.
Hot Swapping Hard disk drive can be replaced while the system is
operating.
Auto Rebuilding After replacing the failed hard disk drive with the new one,
this function restores the data automatically which the failed
hard disk saved by acquiring data from other hard disk
drives.
Hot Spare This is a function to prepare an extra hard disk drive
preliminary to replace a failed hard disk drive. By preparing
the hot spare, the rebuilding function is activated
automatically when a failure occurs and RAID system is
recovered.
NOTE
：
Universal RAID Utility, NEC ESMPRO Manager and NEC ESMPRO
Agent are attached to the server as standard. Refer to descriptions
of each software for the installation procedure or usage.
IMPORTANT :
Preventive maintenance by Patrol Read
Patrol Read is available as the preventive maintenance for
subsequent defects of hard disk drive. This allows subsequent
defects to be found in early stage.