I'm starting to use my Raspberry Pi 4, connected to 1 SSD & 1 HDD, as Samba server & Resilio Sync. Is this considered NAS?

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

Taiwan-based NAS maker Synology has warned customers that the StealthWorker botnet is targeting their network-attached storage devices in ongoing brute-force attacks that lead to ransomware infections.

The NAS maker urges all system admins and customers to change weak administrative credentials on their systems, to enable account protection and auto block, and to set up multi-factor authentication where possible.

Synology rarely issues security advisories warning of active attacks against its customers. The last alert regarding ransomware infections following successful large-scale brute-force attacks was published in July 2019.

The company advised users to go through the following checklist to defend their NAS devices against attacks:
-Use a complex and strong password, and Apply password strength rules to all users.
-Create a new account in the administrator group and disable the system default "admin" account.
-Enable Auto Block in Control Panel to block IP addresses with too many failed login attempts.
-Run Security Advisor to make sure there is no weak password in the system.

"To ensure the security of your Synology NAS, we strongly recommend you enable Firewall in Control Panel and only allow public ports for services when necessary, and enable 2-step verification to prevent unauthorized login attempts," the company added.

"You may also want to enable Snapshot to keep your NAS immune to encryption-based ransomware."

..should I temporarily disable QuickConnect 

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 ?

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.

[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 ?

NAS 1
[4TB 4TB 8TB 8TB)

- Take out 4TB x2
  * if this the disk you want to insert in NAS 2 it should be remove properly from NAS 1
  * Deactivate, later better format as new drive before insert in NAS 2
- Plug new 8TB x2 (wait to rebuild)
NAS 2
[3TB 3TB 3TB 3TB)

- Remove Disk 1 & 4 (failing) "Replace disk"
- Insert 4TB x2 from NAS 1 (format as new disk) into Disk 1 & 4
- Wait rebuild 

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 ?

Reallocated sector counts. Reallocation happens when the drive's logic remaps a damaged sector, as a result of recurring soft or hard errors, to a new physical sector from its spare ones. This attribute reflects the number of times a remapping has happened. If its value increases, it's an indication of HDD or SSD wear.

Current Pending Sector Count. This counts the "unstable" sectors, meaning the damaged ones with read errors that are waiting for a remapping, a kind of "probation" system. S.M.A.R.T. algorithms have mixed understandings about this particular attribute, as it is sometimes unconvincing. Still, it can provide an earlier warning of possible problems.

Reported Uncorrectable Errors. It is the count of errors that are impossible to recover, and it is useful because it seems to have the same meaning for all manufacturers.

https://www.digitalcitizen.life/simple-ques...hat-does-it-do/

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 ?

So now wondering why my SSD Cache Read/Write crashed and when check the SSD itself its ok 

Now setting to Read Only... and see what will happen, does anyone had same Cache SSD crashed especially set in Read/Write ? 

just curious.. as for NAS alternative.. anyone know if there is such thing at the market where exHDD docking + ethernet network features.?

saw something like this: https://www.amazon.com/HighPoint-RocketStor...g/dp/B00PJO53VI

Anyone upgraded to synology DSM 7? any issue?

Also, anyone can recommend IP camera that compatible with Synology surveillance station?

  I still waiting   

Hi guys and all the NAS experts. A very newbie here want to ask a question about NAS.

Can anyone recommend me one NAS server for my company use? The main purpose is only for file sharing.

Currenly I'm using oldschool method:
- Use a normal CPU
- create a root sharing folder,
- create sub folders for each user/dept.
- then copy the link for each subfolder and create a desktop shortcut to each user's pc. (for example, if HR dept staff, the desktop shortcut link will be something like "\\192.168.1.20\DESKTOP-1111222\shared\hr", and so on.

It's a very oldschool method, I know. And it becomes problem now since we're still in working from home schedule, so need to come to office first to copy the files and bring back to home. Later go back to office and replace the updated files. It's very tiring and ineffective.

So I think NAS is the solution. Based on the purpose mentioned above, anyone can recommend me which NAS should I buy?

A very thank you to everyone.

Thank you sir for the response.

Yes I did the research and found that NAS can offer more.. But for the time being, I need a storage that can store files and can accessible anywhere. For unknown reason, I want to avoid using port forwarding or VPN tunneling. Plus the normal CPU I've used is already outdated in term of the hardware specs. So I think NAS can solve my problem.

As your questions:
- 10TB space is enough
- HDD to use --> this one I'm not sure. Maybe anyone can suggest.
- Versioning --> not quite sure but I think it's good for backup incase there are any accidental deleting and overwriting
- Backup foe each user pc --> not required
- Backup of the data on NAS --> I thought this one NAS has mirror HDD to copy everything from main disk to backup 2? Please correct me if i'm wrong.
- Collaborative applications --> Not required.

Thank you for your time sir.

Yes finally       

https://www.synology.com/en-my/releaseNote/DSM - DSM Version: 7.0.1-42218