Intel RS25DB080 Hardware User Guide - Page 27

RAID transactions. Cache mode selection takes immediate effect while the server is online and is available on a per virtual drive basis. The ROC memory controller provides single-bit ECC error correction with multi-bit detection support. The Intel® RAID Controller RS25DB080 supports Intel® RAID Smart Battery AXXRSBBU9. The optional Intel® RAID Smart Battery AXXRSBBU9 provides a battery backup option for data cached in the memory. It is connected remotely to the RAID controller through a supplied cable. See below figure for reference only. Actual shape of the product may vary from the figure. Figure 7. Intel® RAID Smart Battery AXXRSBBU9 Note: Intel Corporation strongly recommends using an uninterruptible power supply (UPS). Diagnostic Components Audible Alarm The audible alarm beeps when a drive fails and also during a rebuild. The drive failure alarm beeps are: • Degraded array: Short tone, one second on, one second off. • Failed array: Long tone, three seconds on, one second off. • Hot spare commissioned: Short tone, one second on, three seconds off. The drive failure tones repeat until the problem is corrected, or until the alarm is silenced or disabled. The alarm can be silenced or disabled on the controller's properties page in the BIOS Console or by using the failed drive options pane in the Intel® RAID Web Console 2. Silencing the alarm is temporary. If the cause of failure still exists or if an additional failure is detected, then the alarm sounds again when the system is rebooted. Disabling the alarm is persistent across errors and reboots. When the alarm is disabled, a failure does not cause it to sound until it is re-enabled. Intel® RAID Controller RS25DB080 Hardware User's Guide 17