getting ataX.00 IDENTIFY error msg's.

[FoLkjF]

ds923 kernel: [1247913.632774] ata1.00 (slot 1): failed to IDENTIFY (I/O error, err_mask=0x100)
ds923 kernel: [1247918.494974] ata7.00 (slot 4): failed to IDENTIFY (I/O error, err_mask=0x4)
ds923 kernel: [1247925.042313] ata2.00 (slot 2): failed to IDENTIFY (I/O error, err_mask=0x100)
ds923 kernel: [1247940.500164] ata6.00 (slot 3): failed to IDENTIFY (I/O error, err_mask=0x4)

i see these messages in /var/log/messages. after running synology_hdd_db had thought these wouldn't be displaying? i have 4 x Seagate ST8000VN004 IronWolf 8TB drives + 2 x M.2 SanDisk WD Black in this ds923+.

is there a course of action to fix this or can these be safely ignored?

[007revad]

Those errors are serious. It can be caused by faulty drives or a faulty backplane. Since DSM is having the same issue with all 4 drives it is very unlikely to be 4 faulty drives. If the DS923+ is still under I'd contact Synology Support.

If it's not under warranty I'd remove the cover off the NAS and check that the backplane is fully plugged into the main board. Or unplug then reconnect the backplane a few times.

[007revad]

Apparently I/O errors can also be caused by a dying power supply. To check you can:

1. Shut down the DS923+.
2. Remove all of your drives, including the NVMe drives.
3. Insert any old spare HDD.
4. Boot the DS923+ and do the initial setup.
5. Check /var/log/messages to see if you're getting I/O errors with just 1 HDD.

If it's okay with just 1 HDD but you get I/O errors with 4 HDDs then the power adaptor is dying. Though I'd be surprised if it's dying because it can't be more than 2 years old.

[FoLkjF]

sorry for delay in reply....

i purchased this ds923+ in january 2025. probably still under warranty. pretty sure it is a 2024 model and not the new ones that synology won't help with (i think).

ok i will check the backplane as you suggest along with your other suggestions. i have a new WD NAS Plus drive i can put in it and check that too.

someone had mentioned over on syno that if i had used the scripts you wrote and sent in logs it would show something that might void warranty...just asking...

thank you very much for your help and scripts... i'll let ya know how this goes.

[FoLkjF]

removed all drives and NVMe drives. checked back planes.
put in a 2.0TB WD RED NAS and installed "DSM 7.2.2-72806 Update 4". same DSM that is on the removed IronWolf drives.
also added the latest "Synology HDD/SSD Offline Update Pack" since synology reversed their arcane restrictions.

there are no Error/errors regarding this drive test in dmesg or /var/log/messages.

[dmesg output]:

ata1 (slot 1): SATA link up 6.0 Gbps (SStatus 133 SControl 300)
ata1.00 (slot 1): ATA-9: WDC WD20EFRX-68EUZN0, 80.00A80, max UDMA/133
ata1.00 (slot 1): 3907029168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
ata1.00 (slot 1): SN: WD-xxxxxxxxxx
ata1.00 (slot 1): configured for UDMA/133
got SATA disk[0]
sd 0:0:0:0: [sata1] 3907029168 512-byte logical blocks: (2.00 TB/1.82 TiB)
sd 0:0:0:0: [sata1] 4096-byte physical blocks
sd 0:0:0:0: [sata1] Write Protect is off
sd 0:0:0:0: [sata1] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sata1] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sata1: p1 p2 p3 < p5 >
sd 0:0:0:0: [sata1] Attached SCSI disk

the other empty ata slots (2,3,4) were returned as:
-SATA link down (SStatus 0 SControl 300)
-No present pin info for SATA link down event

expected since those slots are empty.

tomorrow i'll install the 4 x IronWolf drives and power up and check the logs.
if errors, i'll ticket synology.