Products Owner's manual

66 • Chassis and Blade Installation R-Series Data Center Products User’s Guide
Perform the following steps to clear all CMOS settings.
1. Power down the blade and remove the blade from the chassis (if the blade is not in
an enclosure—for example, for configuration—ensure that power is
disconnected).
2. Locate header JP10 on the R3080D (see Figure 34 on page 65) or header JP3 on
the R3040S (see Figure 35 on this page).
3. Use needle-nose pliers to move the jumper from the default position (on pins 1
and 2) to the reset/clear position (on pins 2 and 3).
4. Wait five seconds.
5. Using your pliers, move the jumper back to the default position (on pins 1 and 2).
6. Return the blade in a chassis as described in “Installing PC Blades” on page 58.
7. Power on the R3040S.
The CMOS is cleared, including any administrator or user passwords. You can now
enter BIOS setup to make any necessary changes by pressing F2 when prompted
while starting the blade.
Configuring RAID on an R3040S Blade
R3040S blades can contain up to 4 hard disks, and supports the following RAID
configurations:
• RAID 0—implements a striped disk array. Data is broken down into blocks and
each block is written to a separate disk drive. Since no redundant information is
stored, performance is very good, but the failure of any disk in the array results in
complete data loss. RAID 0 is only used to increase disk performance.
• RAID 1—implements mirroring. This redundancy of data means that no rebuild
is necessary in case of a disk failure, only a copy to the replacement disk.
• RAID 10—implements mirroring (RAID 1) and a striped disk array (RAID 0);
RAID 10 is also called RAID 1+0. This configuration requires a minimum of four
disks: two mirrored disks to hold half of the striped data and two mirrored disks
for the remaining data.
• RAID 5—stripes both data and parity information across three or more drives.
writing data and parity blocks across all the drives in the array. RAID 5 volumes
functions if one drive fails, though performance is degraded.
Prerequisites and Overview of Required RAID Tasks
The following list provides an overview of the steps required to create a RAID volume
(perform tasks in the order listed below).
• Back up all data on your blade.
• If applicable, obtain all drivers required for your blade. After creating a RAID
volume, you will install an OS on the blade. By default, images installed on
ClearCube blades contain all necessary drivers, including the RAID drivers and
hardware drivers (NIC, chipset, and video). You can obtain drivers from the