Readynas DUO and WD EARX 2TB

Question

I have an old ReadyNas Duo v1 that originally had 2 x WD EARS 2TB drives in raid1. After a year or two drive number 2 died, still under warranty and was replaced by WD with a EARX 2TB, so nearly identical. That synced fine and was running without issue for some time. Now my Duo report through frontview that the drive has died. I removed the drive, put it in my desktop pc and ran WD's disk test tool. This found a couple of bad sectors which it claims to have repaired. Popping the disk back in the Duo initially syncs but soon fails again. Repeated this a few times, and always the same result. In the desktop pc the drive checks out ok - I can write zeroes to whole drive, re-run disk scan with no errors. Smart data, qucik and extended smart tests show no errors. Yet the drive continues to fail in the NAS.

Any ideas? This disk is apparently compatible according to Netgear, but there have been frimware upgrades for the Duo since. Is it time to give up on the Duo and invest in something newer?

StephenB · Answer

What do the SMART stats say for the drive?What firmware are you running on the NAS?

Marto731 · Answer

PJ,
It sounds that you have disk errors, so I would not give up on the Duo.

Can try a 3rd disk in Bay 2 for comparison.

Select your model # under "Legacy" on this list.
http://kb.netgear.com/app/answers/detail/a_id/20641

Thanks, Marto

pjfg · Answer

Attribute&nbsp;name	Real value	Current	Worst	Threshold01	Read Error Rate								0	200	200	51	00000000C9	Good03	Spin-Up Time								6750 ms	165	164	21	0000001A5E	Good04	Start/Stop Count							32,542	68	68	0	0000007F1E	Good05	Reallocated Sectors Count					1	200	200	140	0000000001	Good07	Seek Error Rate								0	199	187	0	00000000D2	Good09	Power-On Hours (POH)						654d 9h	79	79	0	0000003D59	Good0A	Spin Retry Count							0	100	100	0	0000000000	Good0B	Recalibration Retries						0	100	253	0	0000000000	Good0C	Device Power Cycle Count					35	100	100	0	0000000023	GoodC0	Power-off Retract Count						26	200	200	0	000000001A	GoodC1	Load/Unload Cycle Count						2,119,642	1	1	0	00002057DA	GoodC2	Temperature									32 °C	118	101	0	0000000020	GoodC4	Reallocation Event Count					1	199	199	0	0000000001	GoodC5	Current Pending Sector Count				0	200	200	0	0000000000	GoodC6	Uncorrectable Sector Count					0	200	200	0	0000000000	GoodC7	UltraDMA CRC Error Count					0	200	200	0	0000000000	GoodC8	Write Error Rate / Multi-Zone Error Rate	0	200	200	0	0000000000	GoodThe firmware is the latest, version 4.1.13I don't have another 2TB to test in the now empty bay 2. Will any harm come of inserting a smaller drive (I think I have a 160 or 250 spare) while the system is configured for RAID1?

StephenB · Answer

You can't insert a small drive.

pjfg · Answer

StephenB wrote:You can't insert a small drive.Well, obviously I can, physically. I'm just curious about the implications. Will it simply ignore it, and spit out an error, or would doing so cause data loss to the remaining drive? Obviously it's never going to sync any data with a smaller drive, but if it was happy I could at least test that sata channel by mounting the disk and filling it with some data....

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Readynas DUO and WD EARX 2TB

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