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Acuta 4 (Frequently Asked Questions)

  1. When I lock a drive carrier with a disk drive in place, the red disk activity indicator turns on and an alarm beep sounds. Why?
  2. How can I turn off the alarm beep sound when there is a hard disk failure?
  3. I have connected the ACUTA 4 subsystem, but it does not appear in the motherboard BIOS. Why?
  4. Why does ACUTA 4 not recognize the HDDs?
  5. How should I react to a RAID failure ?
  6. How should I react to an HDD failure while creating a RAID 5?
  7. If I only have three HDDs, can I create a RAID?
  8. Why does the display read "RAID level config error"?
  9. The host computer cannot detect ACUTA 4. What should I do?
  10. A disk has failed. What should I do?
  11. Two disks have failed. What should I do?
  12. Three disks have failed. What should I do?
  13. Four disks have failed. What should I do?
  14. I loaded four disks and turned on the subsystem to set up an array but the display shows "RAID fail" and the alarm is sounding. How do I solve the problem?
 Acuta 4
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  • 1 When I lock a drive carrier with a disk drive in place, the red disk activity indicator turns on and an alarm beep sounds. Why?
    • Make sure the IDE and power connectors of the HDD are connected firmly to their counterparts inside the drive carrier.
    • Ensure the HDD is set as master.
    • Change the disk drive with a new one and try again.
    • Exchange the top and bottom drive carriers and try again to determine if the carrier itself is faulty.
    • If all of the above steps fail, contact your vendor.
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  • 2 How can I turn off the alarm beep sound when there is a hard disk failure?
    • Unlock the drive carrier of the failed disk, or
    • Press the mute button.
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  • 3 I have connected the ACUTA 4 subsystem, but it does not appear in the motherboard BIOS. Why?
    • Ensure that an array is initialized.
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  • 4 Why does ACUTA 4 not recognize the HDDs?
    • There may be an HDD jumper-setting problem. Make sure all drive jumpers are set to "master".
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  • 5 How should I react to a RAID failure?
    • For a RAID 5 array, you should replace the failed disk. Data rebuilding will then begin.
    • For a RAID 5+hot spare array, data will be rebuilt automatically to the hot spare disk. There is no need to immediately replace the failed drive.
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  • 6 How should I react to an HDD failure while creating a RAID 5?
    • Replace the failed HDD with another of equal or larger capacity. The array will re-initialize.
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  • 7 If I only have three HDDs, can I create a RAID?
    • Yes, but you can only choose R5+hot spare. The three HDDs should be installed in the bottom three disk carriers with the top layer - the host spare location, left empty. The alarm will sound during initialization.
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  • 8 Why does the display read "RAID level config error"?
    • The RAID level selector is not set to the level of the existing array. Reset the RAID level selector.
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  • 9 The host computer cannot detect ACUTA 4. What should I do?
    • Make sure the host interface connection cable is attached securely to ports on ACUTA 4 and the host and is not damaged.
    • Check the display for error messages.
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  • 10 A disk has failed. What should I do?
    • Swap the failed disk with one of the other three disks and turn on. If the same disk fails, replace the disk. If the failure reappears at the same drive carrier, either the drive carrier or ACUTA 4 is faulty. Perform the next step.
    • Swap the position of the drive carrier that failed twice and turn on. If the same drive carrier fails, replace it. If the failure reappears at the same drive carrier slot, ACUTA 4 is faulty. Perform the next step.
    • ACUTA 4 appears to have an internal malfunction. Consult your dealer.
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  • 11 Two disks have failed. What should I do?
    • Swap the positions of the failed disks with the remaining two disks. If the same disks fail, replace them. If the failures reappear at the same drive carriers, either the drive carriers or ACUTA 4 is faulty. Perform the next step.
    • Swap the position of the drive carriers that failed twice with the working drive carriers and turn on. If the same drive carriers fail, replace them. If the failures reappear at the same drive carrier slots, ACUTA 4 is faulty. Perform the next step.
    • ACUTA 4 appears to have an internal malfunction. Consult your dealer.
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  • 12 Three disks have failed. What should I do?
    • Swap the single functioning disks with each of the failed disks in turn. If the functioning disk continues to function at its new location, the original disk was faulty and should be replaced. If the functioning disk does not function at any of the three other locations, the drive carriers for those location or ACUTA 4 is faulty. Perform the next step.
    • Swap the functioning drive carrier in the same way to find out if the drive carriers or ACUTA 4. Replace any malfunctioning drive carriers.
    • Consult your dealer if ACUTA 4 appears to be faulty.
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  • 13 Four disks have failed. What should I do?
    • If four disks have failed, you will need to use another disk that you know is functioning. Use this disk in the same way as outlined in the previous answer to find out if the malfunction is with the original disks, the drive carriers or ACUTA 4.
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  • 14 I loaded four disks and turned on the subsystem to set up an array but the display shows "RAID fail" and the alarm is sounding. How do I solve the problem?
    • Remove all four disk carriers then reinstall the carriers. If an array still does not initialize, check the disk indicators (refer to the table on page 22) and replace any failed disks.
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