My synology DS414 drives indicated "Failing" on 2 of the 4 drives.

1. do I need to replace them immediately ?
2. can I replace the fail drive from WesternD to Seagate ?

i use SHR. i will replace 1 at a time. my current installation is 4x3TB. i will replace with 1x8TB first right

I run into a very complicated problem

Nas 1
[4TB 4TB 8TB 8TB)

Nas 2
[3TB 3TB 3TB 3TB)

my Nas 2 has disk 1 and disk 4 failing. So I buy 2 x 8TB. plug the 8TB into Nas 1, remove the disk 1 from Nas 2 and plug into disk 1 of Nas 2. then I got system partition error on all drives on Nas 2. what hav I done wrong ?

I tried using disk manament tools from windows and delete all the 4 partition in the nas HDD. insert into NAS, then DSM7 does not recognize the password. when I insert the faulty drive, same error partition message.

see picture below, when I insert back the faulty drive, I was able to login DSM but it shows the drive 1 has crashed (before I replace, it was failing only)

[further update at 11:42pm. I tried cloning the failing HDD, so far able to clone using the orico docking station.



This post has been edited by mitkey06: Aug 10 2021, 11:48 PM

can i just format the NAS HDD to NTFS file format using windows 10?

I manage to clone the HDD and insert into NAS 2. it ask me to confirm that I want to overwrite the data from another NAS (even though I already clone it). so now I just kept my finger cross. but truely life is really painful when 2 HDD is failing at the same time.

i am now rebuilding disk 1. I kept getting bad sector notice on disk 4. and the rebuilding process will take me 28 hours.

This post has been edited by mitkey06: Aug 11 2021, 12:22 PM

exactly. so shud i just deactivate it first before plug into the other NAS ? Its taking upto 24 hours to repair (from 4TB to 8TB). i still have another 4TB hdd to go. guess i need to deactivate first ? can I deactivate and format the NAS HDD before unplug ?

This post has been edited by mitkey06: Aug 11 2021, 05:54 PM

[4TB 3TB 3TB 3TB]

from above configuration my drive 4 is degraded and I want to replace drive 4 with 4TB. however, I understand its better to put the 2 units of 4TB side by side, right ? and how do I do it ?

can I know what is the recommended backup of windows OS/system volume inc application (office and other software that comes with license keys). do we use microsoft system back up or synology active backup for business ?

e.g. if one of the client SSD burnt, then it wud be nightmare right ?

I detected bad sector on ironwolf drive which is under warranty, can i send for RMA ?

After all the Hoohaa, I rerun the SMART test on the HDD that reported bad sector and crash my pool. guess what, it says healthy. so I dont believe, rerun SMART overnight, still report healthy. the HDD is a WD 7years. how do I really check ? this HDD just screw up my entire NAS.

I run WINDOWS chkdsk /F also. surface scan. all ok. isnt that when there is bad sector, it will be reported ?

This post has been edited by mitkey06: Aug 18 2021, 11:38 AM

I will never go back to WD. not sure who owns it now. never thot its so expensive to own storage pool. every 8 years change. question now, can we trust synology SMART hdd check ?

This post has been edited by mitkey06: Aug 19 2021, 10:29 AM

why my system do not start with storage pool 1 since my last crash ? after the crash, i delete all the pools and restart creating new storage pool. yet it always remain pool 2.

This post has been edited by mitkey06: Aug 20 2021, 12:08 PM

yes crystaldiskinfo is good. it shows my nas hdd health info with CAUTION. there are more than 200 remap bad sectors and growing. time to discard the hdd ?

can I know where (and how much ) u get the 16TB, it seeems quite rare and only pro version available

shipping and tax is a bomb, how to handle this ? and did u get during black friday ?

This post has been edited by mitkey06: Aug 31 2021, 10:43 AM

i paid RM 1050 for a 8TB ironwolf during the 8.8 shopee sales. saw the price going up probably due to RM weakeaning