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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...
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.
Your HDD gets 1000 reallocated sectors in one time, no mail...
omicron_persei8 wrote:
Your HDD gets 1000 reallocated sectors in one time, no mail...
I've always received them (though I just haven't had any reallocated sectors on my OS 6 system).
But with OS 4.2
ReadyNas PRO wrote:
Reallocated sector count has increased in the last day.
Disk 2:
Previous count: 0
Current count: 10
Growing SMART errors indicate a disk that may fail soon. If the errors continue to increase, you should be prepared to replace the disk
My understanding is that disk alerts and their thresholds are handled differently in RAIDiator 4.2 and ReadyNAS OS6.
I have seen these email alerts for "small" amount errors on RAIDiator 4.2, but never on ReadyNAS OS6, and the KB article posted by omicron_persei8 would confirm that.
jak0lantash wrote:
My understanding is that disk alerts and their thresholds are handled differently in RAIDiator 4.2 and ReadyNAS OS6.
I have seen these email alerts for "small" amount errors on RAIDiator 4.2, but never on ReadyNAS OS6, and the KB article posted by omicron_persei8 would confirm that.
Thanks. IMO some of those thresholds are much too high. I just posted a suggestion in the idea exchange to optionally send email alerts on any disk errors.
Add kudos if you support that idea.
StephenB wrote:
jak0lantash wrote:My understanding is that disk alerts and their thresholds are handled differently in RAIDiator 4.2 and ReadyNAS OS6.
I have seen these email alerts for "small" amount errors on RAIDiator 4.2, but never on ReadyNAS OS6, and the KB article posted by omicron_persei8 would confirm that.
Thanks. IMO some of those thresholds are much too high. I just posted a suggestion in the idea exchange to optionally send email alerts on any disk errors.
Add kudos if you support that idea.
Couldn't agree more, upvoted!
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