Bit rot is real. Make sure to schedule scrub and invest on UPS.

10 ports SATA card.
https://shopee.com.my/ACASIS-PCIe-Expansion...61-73bf2de17dfa

lol. DIY NAS got more interesting.

Next gen DIY NAS
Pentium G7400 or Core i3-12100 299/599 (estimated)
MSI Z690-A Pro - 937
8GB DDR4-3200 - 149
10 ports SATA card - 234
Cooler Master MWE Bronze V2 550W - 239
Fractal Meshify 2 XL case (18 HDD) -  898

Optional:
10G network card - 419 ( https://shopee.com.my/TP-LINK-TX401-10-Giga...da-e9c3720a4367 )

10 port SATA card for this brand price is too expensive...taobao can get it at less than rm100

10 ports SATA card.
https://shopee.com.my/ACASIS-PCIe-Expansion...61-73bf2de17dfa

Does this card compatible with unRAID?

DSM 7.1 brings key improvements, including the introduction of file aggregation portals and SMB DFS capability to enable administrators to link together multiple Synology systems for more convenient file access. In addition, the new UI introduced with DSM 7.0 has been further refined by consolidating background tasks into an admin-friendly overview that aims to give greater transparency into what is happening on the system across different user accounts.

For Synology High Availability clusters, users can now view and manage drives on both systems from a single instance of Storage Manager for easier maintenance and management. On the performance side, DSM has long supported flash caching to boost random I/O performance but with the DSM 7.1 update, users will be able to speed up multiple storage volumes at the same time.

On Synology NAS devices, attackers might execute unauthorized instructions. The manufacturer is currently working on and rolling out updates to address the issues.

Synology has addressed a security flaw in its Disk Station Manager NAS operating system (DSM). The flaw allows authorized attackers to remotely execute any commands on the affected NAS. Because the issue exists in both DSM 6.2 and 7.0, this should apply to all current Synology NAS systems reports Germany based heise.

The fault is classified as "critical" by the manufacturer. He has not yet offered any details on the chasm. [Revised] The attacker's login location is not provided by Synology. Based on the classification, a login to network shares is apparently sufficient. The DSM 6.2 operating system is delivered in versions 6.2.4-25556-5 and later. According to the security report, Synology is presently working on the DSM 7.0 upgrade, which should be ready soon. The available update should be shown on DSM-enabled NAS devices. Administrators should put it into action right away.

Owners of Asustor NAS drives have woken up to discover that data they believed was safe and sound on their network storage devices has instead been encrypted by ransomware, and that cybercriminals are demanding a ransom.

Affected Asustor users have been posting on Asustor's support forum about how they discovered their NAS drives have been hit by the DeadBolt ransomware.

While Asustor investigates what is clearly a serious problem, it says it has disabled functionality which can allow remote access to its NAS drives: ASUSTOR EZ-Connect, ASUSTOR EZ Sync, and ezconnect.to.

In addition, the company has published the following recommendations for customers to protect themselves from the DeadBolt ransomware:

Change default ports, including the default NAS web access ports of 8000 and 8001 as well as remote web access ports of 80 and 443.
Disable EZ Connect.
Make an immediate backup.
Turn off Terminal/SSH and SFTP services.
In addition, the company has linked to further advice about how to mitigate the risks of a ransomware attack.

Asustor has advised that customers hit by the ransomware attack follow the steps listed below:

Unplug the Ethernet network cable.
Safely shut down your NAS by pressing and holding the power button for three seconds.
Do not initialize your NAS as this will erase your data.
Fill out their details in this online form, so support technicians can make contact with further guidance.

Synology have released update to fix the previously mentioned vulnerability.

Version: 7.0.1-42218 Update 3

not yet available for my model 

Not available for your model or it haven't ask for update?
Mine haven't ask for update, I'll wait first instead of manual download since my NAS not port forward to internet.

DS1520+ is 3k

If budget but new build
Chasis RM530
CPU + mobo RM1200
RAM 8GB RM150
PSU RM300
SSD RM150 (for OS)
Total RM2330

Pros: Cheaper, sleek casing, modularity, can choose what OS to put

Cons: Have to manually install and configure OS, don't have first party integrated apps (depends on individual preference)

If just for network storage with RAID, media server and backup functions, I think custom build will be better choice. If use a lot of apps, using first party means less time spent on finding the suitable app and tinker with it. A lot of open source apps is only on web browser, it didn't have mobile app. Enthusiast will get more satisfaction from custom build, if want something with less work and time tinkering, pre-built will be better.

As of today, it is cheaper.

Pentium G7400 or Core i3-12100 - 299/599
Asus TUF H570 Pro - 820
8GB DDR4-3200 - 139
Corsair MP510 480GB - 329
Cooler Master MWE Bronze V2 550W - 239
24 HDD Chia mining case - 349/499

looks good but, any option to add ddr4 16gb ecc ram for use in truenas?    any recommendation for that type build.
https://www.reddit.com/r/Amd/comments/eyp5f...ecc_to_ecc_ram/