EX2 Ultra Hard Drive sounds like it's failing

I have a MyCloud EX2 Ultra configured as RAID 1 with 2GB x 2GB hard drives. A couple of days ago I began hearing one of the drives constantly resetting and/or re-reading sectors. I’ve been in I.T. for many years so I know the sound very well!

All data is still accessible (the whole point of RAID 1)

When I use the Web interface to check the status, it tells me the RAID is active and healthy.

In the S.M.A.R.T. stats, there are read/write errors etc., but the statistics are identical no matter which disk I select. So it doesn’t help me identify the failing disk.

How can I figure out which disk is making the noise and replace it? Or do I need to wait for it to completely fail?

Thank you

Recommend you log in to the CLI and look at the smart data manaully, in case the GUI is misrepresenting it.

Short of that, you could pull out a drive and see which one is NOT making the sound.

Of course, that’ll be a slow process because when you re-insert the drive you’ll have to wait for the RAID to rebuild…

Thanks - but how do I check the smart data in the CLI?

smartctl will do it.

Thanks so much for that! Here are the results:

root@MyCloudEX2Ultra root # smartctl -A /dev/sda smartctl version 5.38 [arm-marvell-linux-gnueabi] Copyright (C) 2002-8 Bruce Allen Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 190 175 021 Pre-fail Always - 3475
4 Start_Stop_Count 0x0032 067 067 000 Old_age Always - 33056
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 071 071 000 Old_age Always - 21759
10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 45
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 33
193 Load_Cycle_Count 0x0032 189 189 000 Old_age Always - 33092
194 Temperature_Celsius 0x0022 098 094 000 Old_age Always - 49
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0

root@MyCloudEX2Ultra root # smartctl -A /dev/sdb
smartctl version 5.38 [arm-marvell-linux-gnueabi] Copyright © 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 189 174 021 Pre-fail Always - 3516
4 Start_Stop_Count 0x0032 067 067 000 Old_age Always - 33163
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 071 071 000 Old_age Always - 21759
10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 45
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 33
193 Load_Cycle_Count 0x0032 189 189 000 Old_age Always - 33199
194 Temperature_Celsius 0x0022 097 094 000 Old_age Always - 50
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0

root@MyCloudEX2Ultra root # mdadm --query --detail /dev/md0
/dev/md0:
Version : 00.90
Creation Time : Wed May 23 03:03:42 2018
Raid Level : raid1
Array Size : 2097088 (2048.28 MiB 2147.42 MB)
Used Dev Size : 2097088 (2048.28 MiB 2147.42 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent

Intent Bitmap : Internal

Update Time : Tue Sep 11 16:00:02 2018
      State : active

Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0

       UUID : d763a362:237a87a8:97e81ee5:c9cc8dd3
     Events : 0.1

Number   Major   Minor   RaidDevice State
   0       8        1        0      active sync   /dev/sda1
   1       8       17        1      active sync   /dev/sdb1

root@MyCloudEX2Ultra root # root@MyCloudEX2Ultra root # smartctl -A /dev/sda
-sh: root@MyCloudEX2Ultra: not found
root@MyCloudEX2Ultra root # smartctl version 5.38 [arm-marvell-linux-gnueabi] Co
pyright © 2002-8 Bruce Allen
-sh: syntax error: unexpected “(”
root@MyCloudEX2Ultra root # Home page is http://smartmontools.sourceforge.net/
-sh: Home: not found
root@MyCloudEX2Ultra root #
root@MyCloudEX2Ultra root # === START OF READ SMART DATA SECTION ===
-sh: ===: not found
root@MyCloudEX2Ultra root # SMART Attributes Data Structure revision number: 16
-sh: SMART: not found
root@MyCloudEX2Ultra root # Vendor Specific SMART Attributes with Thresholds:
-sh: Vendor: not found
root@MyCloudEX2Ultra root # ID# ATTRIBUTE_NAME FLAG VALUE WORST THR
ESH TYPE UPDATED WHEN_FAILED RAW_VALUE
-sh: ID#: not found
root@MyCloudEX2Ultra root # 1 Raw_Read_Error_Rate 0x002f 200 200 051
Pre-fail Always - 0
-sh: 1: not found
root@MyCloudEX2Ultra root # 3 Spin_Up_Time 0x0027 190 175 021
Pre-fail Always - 3475
-sh: 3: not found
root@MyCloudEX2Ultra root # 4 Start_Stop_Count 0x0032 067 067 000
Old_age Always - 33056
-sh: 4: not found
root@MyCloudEX2Ultra root # 5 Reallocated_Sector_Ct 0x0033 200 200 140
Pre-fail Always - 0
-sh: 5: not found
root@MyCloudEX2Ultra root # 7 Seek_Error_Rate 0x002e 200 200 000
Old_age Always - 0
-sh: 7: not found
root@MyCloudEX2Ultra root # 9 Power_On_Hours 0x0032 071 071 000
Old_age Always - 21759
-sh: 9: not found
root@MyCloudEX2Ultra root # 10 Spin_Retry_Count 0x0032 100 100 000
Old_age Always - 0
-sh: 10: not found
root@MyCloudEX2Ultra root # 11 Calibration_Retry_Count 0x0032 100 253 000
Old_age Always - 0
-sh: 11: not found
root@MyCloudEX2Ultra root # 12 Power_Cycle_Count 0x0032 100 100 000
Old_age Always - 45
-sh: 12: not found
root@MyCloudEX2Ultra root # 192 Power-Off_Retract_Count 0x0032 200 200 000
Old_age Always - 33
-sh: 192: not found
root@MyCloudEX2Ultra root # 193 Load_Cycle_Count 0x0032 189 189 000
Old_age Always - 33092
-sh: 193: not found
root@MyCloudEX2Ultra root # 194 Temperature_Celsius 0x0022 098 094 000
Old_age Always - 49
-sh: 194: not found
root@MyCloudEX2Ultra root # 196 Reallocated_Event_Count 0x0032 200 200 000
Old_age Always - 0
-sh: 196: not found
root@MyCloudEX2Ultra root # 197 Current_Pending_Sector 0x0032 200 200 000
Old_age Always - 0
-sh: 197: not found
root@MyCloudEX2Ultra root # 198 Offline_Uncorrectable 0x0030 100 253 000
Old_age Offline - 0
-sh: 198: not found
root@MyCloudEX2Ultra root # 199 UDMA_CRC_Error_Count 0x0032 200 200 000
Old_age Always - 0
-sh: 199: not found
root@MyCloudEX2Ultra root # 200 Multi_Zone_Error_Rate 0x0008 100 253 000
Old_age Offline - 0
-sh: 200: not found
root@MyCloudEX2Ultra root #
root@MyCloudEX2Ultra root # root@MyCloudEX2Ultra root # smartctl -A /dev/sdb
-sh: root@MyCloudEX2Ultra: not found
root@MyCloudEX2Ultra root # smartctl version 5.38 [arm-marvell-linux-gnueabi] Co
pyright © 2002-8 Bruce Allen
-sh: syntax error: unexpected “(”
root@MyCloudEX2Ultra root # Home page is http://smartmontools.sourceforge.net/
-sh: Home: not found
root@MyCloudEX2Ultra root #
root@MyCloudEX2Ultra root # === START OF READ SMART DATA SECTION ===
-sh: ===: not found
root@MyCloudEX2Ultra root # SMART Attributes Data Structure revision number: 16
-sh: SMART: not found
root@MyCloudEX2Ultra root # Vendor Specific SMART Attributes with Thresholds:
-sh: Vendor: not found
root@MyCloudEX2Ultra root # ID# ATTRIBUTE_NAME FLAG VALUE WORST THR
ESH TYPE UPDATED WHEN_FAILED RAW_VALUE
-sh: ID#: not found
root@MyCloudEX2Ultra root # 1 Raw_Read_Error_Rate 0x002f 200 200 051
Pre-fail Always - 0
-sh: 1: not found
root@MyCloudEX2Ultra root # 3 Spin_Up_Time 0x0027 189 174 021
Pre-fail Always - 3516
-sh: 3: not found
root@MyCloudEX2Ultra root # 4 Start_Stop_Count 0x0032 067 067 000
Old_age Always - 33163
-sh: 4: not found
root@MyCloudEX2Ultra root # 5 Reallocated_Sector_Ct 0x0033 200 200 140
Pre-fail Always - 0
-sh: 5: not found
root@MyCloudEX2Ultra root # 7 Seek_Error_Rate 0x002e 200 200 000
Old_age Always - 0
-sh: 7: not found
root@MyCloudEX2Ultra root # 9 Power_On_Hours 0x0032 071 071 000
Old_age Always - 21759
-sh: 9: not found
root@MyCloudEX2Ultra root # 10 Spin_Retry_Count 0x0032 100 100 000
Old_age Always - 0
-sh: 10: not found
root@MyCloudEX2Ultra root # 11 Calibration_Retry_Count 0x0032 100 253 000
Old_age Always - 0
-sh: 11: not found
root@MyCloudEX2Ultra root # 12 Power_Cycle_Count 0x0032 100 100 000
Old_age Always - 45
-sh: 12: not found
root@MyCloudEX2Ultra root # 192 Power-Off_Retract_Count 0x0032 200 200 000
Old_age Always - 33
-sh: 192: not found
root@MyCloudEX2Ultra root # 193 Load_Cycle_Count 0x0032 189 189 000
Old_age Always - 33199
-sh: 193: not found
root@MyCloudEX2Ultra root # 194 Temperature_Celsius 0x0022 097 094 000
Old_age Always - 50
-sh: 194: not found
root@MyCloudEX2Ultra root # 196 Reallocated_Event_Count 0x0032 200 200 000
Old_age Always - 0
-sh: 196: not found
root@MyCloudEX2Ultra root # 197 Current_Pending_Sector 0x0032 200 200 000
Old_age Always - 0
-sh: 197: not found
root@MyCloudEX2Ultra root # 198 Offline_Uncorrectable 0x0030 100 253 000
Old_age Offline - 0
-sh: 198: not found
root@MyCloudEX2Ultra root # 199 UDMA_CRC_Error_Count 0x0032 200 200 000
Old_age Always - 0
-sh: 199: not found
root@MyCloudEX2Ultra root # 200 Multi_Zone_Error_Rate 0x0008 100 253 000
Old_age Offline - 0
-sh: 200: not found
root@MyCloudEX2Ultra root #
root@MyCloudEX2Ultra root # root@MyCloudEX2Ultra root # mdadm --query --detail /
dev/md0
-sh: root@MyCloudEX2Ultra: not found
root@MyCloudEX2Ultra root # /dev/md0:
-sh: /dev/md0:: not found
root@MyCloudEX2Ultra root # Version : 00.90
-sh: Version: not found
root@MyCloudEX2Ultra root # Creation Time : Wed May 23 03:03:42 2018
-sh: Creation: not found
root@MyCloudEX2Ultra root # Raid Level : raid1
-sh: Raid: not found
root@MyCloudEX2Ultra root # Array Size : 2097088 (2048.28 MiB 2147.42 MB)
-sh: syntax error: unexpected “(”
root@MyCloudEX2Ultra root # Used Dev Size : 2097088 (2048.28 MiB 2147.42 MB)
-sh: syntax error: unexpected “(”
root@MyCloudEX2Ultra root # Raid Devices : 2
-sh: Raid: not found
root@MyCloudEX2Ultra root # Total Devices : 2
-sh: Total: not found
root@MyCloudEX2Ultra root # Preferred Minor : 0
-sh: Preferred: not found
root@MyCloudEX2Ultra root # Persistence : Superblock is persistent
-sh: Persistence: not found
root@MyCloudEX2Ultra root #
root@MyCloudEX2Ultra root # Intent Bitmap : Internal
-sh: Intent: not found
root@MyCloudEX2Ultra root #
root@MyCloudEX2Ultra root # Update Time : Tue Sep 11 16:00:02 2018
-sh: Update: not found
root@MyCloudEX2Ultra root # State : active
-sh: State: not found
root@MyCloudEX2Ultra root # Active Devices : 2
-sh: Active: not found
root@MyCloudEX2Ultra root # Working Devices : 2
-sh: Working: not found
root@MyCloudEX2Ultra root # Failed Devices : 0
-sh: Failed: not found
root@MyCloudEX2Ultra root # Spare Devices : 0
-sh: Spare: not found
root@MyCloudEX2Ultra root #
root@MyCloudEX2Ultra root # UUID : d763a362:237a87a8:97e81ee5:c9cc8dd
3
-sh: UUID: not found
root@MyCloudEX2Ultra root # Events : 0.1
-sh: Events: not found
root@MyCloudEX2Ultra root #
root@MyCloudEX2Ultra root # Number Major Minor RaidDevice State
-sh: Number: not found
root@MyCloudEX2Ultra root # 0 8 1 0 active sync
/dev/sda1
-sh: 0: not found
root@MyCloudEX2Ultra root # 1 8 17 1 active sync
/dev/sdb1
-sh: 1: not found

Well, that gives me pause, but I guess there’s not much to be done about it!

I’d probably agree except that this is an entirely new development - I’ve had the unit for two years I think and it just started doing this. I haven’t added a lot of data recently or anything like that. It really sounds like when a drive is trying to re-read a bad sector, and occurs like 6-7 times every few minutes.

Maybe I’ll just try rebooting it and see what happens, I’ll lyk.

Thanks so much for your help, I really appreciate it!

50 degrees C is fine.

Hey guys,
I am having the same issue and I cannot access the web UI or the drives data through Finder.
Did a hard reboot work?
Thanks