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Forum Discussion
WD10EADS WD Caviar Green - 1TB >> excessive Load Cycle Count
I have two WD10EADS 1TB drives in my Duo. The first was installed a months ago as Drive 2, mirroring the 500 GB Seagate that came with the Duo. The WD drive seemed to work just fine, so I recently bo...
No solution found. Indeed, WD refuses to acknowledge there re even is a problem. They replied to the trouble ticket I opened and told me:
- "We have not recognized the "load/unload" issue as a problem for those drives".
- "We have no firmware upgrades for this drive".
Meanwhile the Load Cycle Count on the affected WD10EADS drives continues to climb.
Disk1 WD10EADS-00M2B0
- firmware = 10.00A01
- LCC = 23600
- Start/stop = 480
- Power-on Hours = 571
- - - - - - - - - - - - - - -> 41 Load Cycles per hour
Disk2 WD10EADS-00L5B1
- firmware = 10.01A01
- LCC = 1187
- Start/stop = 1187
- Power-on Hours = 1656
- - - - - - - - - - - - - --> 0.7 Load Cycles per hour
My newest WD10EADS drive has a third the power-on hours of my first such drive, yet has twenty times the number of park/unpark cycles.
There is another anomaly between the two drives: the 'good' drive reports exactly the same number of Load Cycles and Start/Stops. That's not the case with the other one. It's apparent that the firmware in the two drives is behaving quite differently.
Note that I have disk spindown configured in FrontView (20 minute timer). Once the ReadyNAS decides to spin down the drives, they both go into sleep mode, and the constant park/unpark cycle ceases (as evidenced by the absence of noise).
Other than the constant head chatter, the system is working fine. Neither drive reports any read errors or reallocated sectors.
-Dave
- "We have not recognized the "load/unload" issue as a problem for those drives".
- "We have no firmware upgrades for this drive".
Meanwhile the Load Cycle Count on the affected WD10EADS drives continues to climb.
Disk1 WD10EADS-00M2B0
- firmware = 10.00A01
- LCC = 23600
- Start/stop = 480
- Power-on Hours = 571
- - - - - - - - - - - - - - -> 41 Load Cycles per hour
Disk2 WD10EADS-00L5B1
- firmware = 10.01A01
- LCC = 1187
- Start/stop = 1187
- Power-on Hours = 1656
- - - - - - - - - - - - - --> 0.7 Load Cycles per hour
My newest WD10EADS drive has a third the power-on hours of my first such drive, yet has twenty times the number of park/unpark cycles.
There is another anomaly between the two drives: the 'good' drive reports exactly the same number of Load Cycles and Start/Stops. That's not the case with the other one. It's apparent that the firmware in the two drives is behaving quite differently.
Note that I have disk spindown configured in FrontView (20 minute timer). Once the ReadyNAS decides to spin down the drives, they both go into sleep mode, and the constant park/unpark cycle ceases (as evidenced by the absence of noise).
Other than the constant head chatter, the system is working fine. Neither drive reports any read errors or reallocated sectors.
-Dave
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