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Forum Discussion
BtrieveBill
Jul 27, 2016Aspirant
NAS Slow, Reboot Slow, Drive Light Blinking
My ReadyNAS 516 has been unreasonably slow lately. The system is not sharing files properly, seems to be accessing slow for both reading and writing, and even the web interface is slow. The drive a...
- Jul 27, 2016
I would have also opted to replace Drive 6, if it were an option. However, Drive 2 was the one blinking incessently, and even though it had fewer errors, it was apparently the squeakiest wheel today. Further, the reboot NEVER finished. It hung at 94% for over 90 minutes.
I finally gave up on the reboot and powered down the ReadyNAS entirely a second time, replaced Drive 2, and rebooted. As advertised, it booted up in about 5 minutes, detected the degraded array, and immediately started the Rebuild Process. The system is now working substantially better, and even with the RAID rebuild running, it is turning out better performance than I was getting all this week. I can now send that drive back to WD, get the replacement, and then swap out drive 6 later on. (Strangely, drive 6 was the only drive that had been replaced once before. When the new drive 6 was put in, drive 6 started spewing errors after about a week. This makes me wonder if there is not a problem with the SATA controller or cabling, and that perhaps drive 6 is really OK.)
Lessons learned:
1) Don't assume that the system is working properly, just becasue the Web console shows all drives are green.
2) Don't assume that the drive with the most errors is the one with the biggest problem.
3) Ignore the data in the logs and just replace the drive that is blinking out of sync with everyone else.
4) Always have at least one spare drive on standby.
omicron_persei8
Jul 31, 2016Luminary
In case this is useful:
http://kb.netgear.com/app/answers/detail/a_id/30046/
There should be a log in the GUI about the sdb drive increasing errors, but surely no email about it! And that's a shame. Cf disk alerts thresholds.
There should be a log and at least a mail.
Obviously mail alert settings must be configured to receive a mail.
http://kb.netgear.com/app/answers/detail/a_id/30046/
There should be a log in the GUI about the sdb drive increasing errors, but surely no email about it! And that's a shame. Cf disk alerts thresholds.
There should be a log and at least a mail.
Obviously mail alert settings must be configured to receive a mail.
- StephenBJul 31, 2016Guru - Experienced User
omicron_persei8 wrote:
There should be a log and at least a mail.If email alerts were configured, then there would have been email, at least on the reallocated sectors. It might not send an email (or log) with increasing pending sectors - if not, it should.
FWIW, everyone should make sure that their email alerts work, and should take prompt action on disk errors.
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