User Guide91www.nec-computers.comRAID10 (spanning of RAID1)RAID10 is a RAID level combining RAID0 and RAID1.Stores data on hard disk drives by dividing it (striping). Then, each striped data iswritten onto hard disk drives in mirroring mode. Owing to this feature, high disk accessperformance of RAID0 and, in addition, high reliability of RAID1 can be achieved.CautionThe logical capacity of the array is equal to half the total capac-ity of the connected hard disk drives.Installing the Hard Disk DrivesInstall two or more SAS hard disk drives to your server. See “Installing and Swappinga Hard Disk Drive in a Hot-Swap Disk Drive Bay” on page 116.CautionUse two hard disk drives of the same speed.Also use two hard disk drives of the same capacity if you aregoing to configure the array in RAID1.Enabling the RAID FeatureTo configure a hard disk drive as RAID drive, change the setting of the RAIDconfiguration jumper switch on the motherboard.Note: The factory-set value is to use the hard disk drive asa single disk drive.1. See the section “Preparing Your System for Upgrade” on page 110.
