UCP4131 RSU RAID Module User Guide

1. Overview

The RSU RAID module is built around the ASM1062R controller. It provides a PCIe 2.0 x1 interface and two 6 Gbps SATA ports.

2. Operating Mode / Mode Switching

• Supported mode: RAID 1 (disk mirroring with real-time redundancy).
• Mode selection: via jumper
  • Position 0: AHCI Clear Mode (used to delete an existing RAID).
  • Position 1: RAID 1 Mode (normal operation).

3. Front-Panel Switches & Indicators

Visual Description of Module Front Panel: The front panel features several indicators and controls. From left to right, there is a "RSU" label. Below this, a "BUZZER" switch with "ON" and "OFF" positions. Further to the right are indicator LEDs labeled "PWR", "HDD-L", "HDD-R", and "RST".

PWR - Power LED

• Steady ON when power is applied.

HDD-L – Left Hard-Disk LED

• Normal: green blinks when data is accessed; OFF when idle.
• Fault: red blinks.
• Synchronizing: red solid, while the right HDD LED breathes green.

HDD-R – Right Hard-Disk LED

• Normal: green blinks when data is accessed; OFF when idle.
• Fault: red blinks.
• Synchronizing: red solid, while the left HDD LED breathes green.

RST – RAID Clear Button

• Press and hold ≈10 s to delete the RAID array.

Buzzer Switch

• When a disk fails, the buzzer sounds.
• Toggle this switch to mute the buzzer temporarily.
• Remember to re-enable the switch after the fault is resolved.

4. RAID 1 Deletion & Rebuild Procedure

4.1 Delete RAID 1

• Power down, unplug the RAID card.
• Move the jumper to position 0 (AHCI).
• Re-install the card and power on. Press and hold RST for ~10 s.
• Release when HDD-L / HDD-R LEDs change from slow red blinks to fast green blinks or turn OFF. Deletion is complete.

4.2 Rebuild RAID 1

• Power down, unplug the RAID card.
• Return the jumper to position 1 (RAID 1).
• Re-install the card and power on. Press Esc or Delete to enter BIOS and confirm the boot list contains "ASMT-DI_Safe".
• Select "ASMT-DI_Safe” as the first boot device and proceed with OS installation. Rebuild is complete.

Visual Description of BIOS Screen: The BIOS screen displays boot configuration options. Under "Boot Option Priorities", "Boot Option #1" is set to "UEFI: Built-in EFI Shell". Other options include "CentOS" and "ASMT-DI_Safe". The user is instructed to select "ASMT-DI_Safe" as the first boot device.

5. Daily Operation

5.1 Replacing a Failed Drive

• Identify the failed drive by the red LED on HDD-L or HDD-R.
• Power down, remove the failed drive, insert a new drive of identical model and capacity, then power on.
• The system will automatically synchronize data and the buzzer will stop.

⚠️ Never hot-swap drives or the RAID card!

6. Quick-Fault Reference

Fault 1 – Buzzer keeps beeping (single-disk failure)

• Locate the failed drive via the red LED.
• Power down, replace with a same-model/same-capacity drive, then power on.
• Automatic rebuild will silence the buzzer.

Fault 2 – Buzzer keeps beeping (both drives failed)

• Identify the failed drives via the red LEDs.
• Follow the "Delete RAID 1 → Rebuild RAID 1" procedure, then reinstall the OS.

7. Important Notes

• Never hot-swap drives or the RAID card under power.
• Use drives of identical or larger capacity that have never been configured in another RAID array.