HP Kayak XU 04xx HP FastRAID - Installation and Configuration Guide - Page 21

NOTE 6 When the list of block sizes appears, select a block size. The allowable block sizes are 8, 16, 32, 64 (the default), or 128 KBytes. (This menu does not appear if the array is a RAID 1 array with only two drives.) The default block size gives the best overall performance. Formatting begins immediately. 7 When you see the message Initialization of [array name] is complete, press any key to return to the Disk Array Operations menu. You will need to install the operating system after the array is initialized. Refer to "Installing Windows NT 4.0" on page 7. Adding and Deleting Spares Dedicated spare disks (spares) are an important data protection and real-time recovery feature of RAID 1 arrays (RAID 0 arrays do not support spares). Up to two dedicated spares can be defined for each array. If a disk in an array fails while the computer is running, a spare is activated immediately to take its place. The array software automatically reconstructs the necessary data on the new disk, and array operation continues uninterrupted. Adding a Dedicated Spare. When you create an array you have the option of adding one or two dedicated spares. You can also add dedicated spares to an existing array at a later time. You cannot add dedicated spares to an array if: • The array already has two dedicated spares • The remaining single disks are not at least as large as the smallest disk in the selected array Follow these steps to add one or two dedicated spares to an alreadyexisting array: 1 Select Disk Array Operations from the Main Menu. 2 Select Add/Delete Spare Drive from the Disk Array Operations menu. 3 Select the array to which you want to add the dedicated spare. 4 Select Add Spare Drive from the Add/Delete Spare menu. 18 English English