So I have just replaced my parity drive with a new 8TB drive I had done one pre clear pass on. Its resyncing the parity now, but I just got a couple of emails with warnings:

 

Event: unRAID device sdi SMART health [5]

Subject: Warning [bACKUP TOWER] - reallocated sector ct is 329

Description: ST8000AS0002-1NA17Z_Z840F0J5 (sdi)

Importance: warning

 

Event: unRAID device sdi SMART health [197]

Subject: Warning [bACKUP TOWER] - current pending sector is 974

Description: ST8000AS0002-1NA17Z_Z840F0J5 (sdi)

Importance: warning

 

Event: unRAID device sdi SMART health [198]

Subject: Warning [bACKUP TOWER] - offline uncorrectable is 54

Description: ST8000AS0002-1NA17Z_Z840F0J5 (sdi)

Importance: warning

 

Yet when I go and look at the drive attributes, everything looks ok?

 

1	Raw read error rate	0x000f	106	099	006	Pre-fail	Always	Never	11810736
3	Spin up time	0x0003	095	095	000	Pre-fail	Always	Never	0
4	Start stop count	0x0032	100	100	020	Old age	Always	Never	4
5	Reallocated sector count	0x0033	100	100	010	Pre-fail	Always	Never	0
7	Seek error rate	0x000f	073	060	030	Pre-fail	Always	Never	21001197
9	Power on hours	0x0032	100	100	000	Old age	Always	Never	71 (2d, 23h)
10	Spin retry count	0x0013	100	100	097	Pre-fail	Always	Never	0
12	Power cycle count	0x0032	100	100	020	Old age	Always	Never	4
183	Runtime bad block	0x0032	100	100	000	Old age	Always	Never	0
184	End-to-end error	0x0032	100	100	099	Old age	Always	Never	0
187	Reported uncorrect	0x0032	100	100	000	Old age	Always	Never	0
188	Command timeout	0x0032	100	100	000	Old age	Always	Never	0
189	High fly writes	0x003a	100	100	000	Old age	Always	Never	0
190	Airflow temperature cel	0x0022	066	055	045	Old age	Always	Never	34 (min/max 29/34)
191	G-sense error rate	0x0032	100	100	000	Old age	Always	Never	0
192	Power-off retract count	0x0032	100	100	000	Old age	Always	Never	5
193	Load cycle count	0x0032	100	100	000	Old age	Always	Never	9
194	Temperature celsius	0x0022	034	045	000	Old age	Always	Never	34 (0 24 0 0 0)
195	Hardware ECC recovered	0x001a	106	099	000	Old age	Always	Never	11810736
197	Current pending sector	0x0012	100	100	000	Old age	Always	Never	0
198	Offline uncorrectable	0x0010	100	100	000	Old age	Offline	Never	0
199	UDMA CRC error count	0x003e	200	200	000	Old age	Always	Never	0
240	Head flying hours	0x0000	100	253	000	Old age	Offline	Never	19593640804423
241	Total lbas written	0x0000	100	253	000	Old age	Offline	Never	15880674144
242	Total lbas read	0x0000	100	253	000	Old age	Offline	Never	47793440726

 

 

 

That is strange!

 

I would suggest that you post the diagnostics file (Tools->Diagnostics) as that will amongst other things include the syslog and a full set of SMART reports for all your drives so that we can get a better idea of what is happening over all.

Sometimes notifications continue for the old disk after it has been replaced, did you old parity have any issues?

No the old parity disk did not have any issues that I was aware of, but I think I'll do a pre clear on it before reintroducing it to the array as a data drive.

Here is what is even more bizarre about this, I just read the latest message and realized the following:

 

I have two UnRaid servers, Tower and Backup Tower. The one that is currently doing the parity  sync with the new 8TB Seagate drive is Tower, yet in the messages about reallocated sectors, it says the message is coming from Backup Tower. Also while its referencing the 8TB drive in Tower, its also referencing sdi now in Tower, the 8TB Seagate drive is sdy, in Backup Tower, sdi happens to be an old WD Green 2TB drive I am running a pre clear on. How weird is this?

So I just checked the SMART info on the old 2TB drive I am doing the preclear on and it shows the reallocated sector count is now at 1091. I think I know why the alerts are referencing the 8TB, because I had previously precleared the 8TB on this system, I guess if you don't clear the stats or something it remembers the last drive?