pc1668

回覆 1# pc2012

回覆 3# KinChungE

回覆 12# c0232076

回覆 21# wala

Which RAM to Buy For DS720+ NAS

Answer: Samsung 8GB DDR4 CL19 2666MHz CL19, 1.2v Product Code: M471A1K43CB1-CTD

The author said:

"The original preinstalled RAM, which is the D4NESO-2666-2G, is bound to the motherboard in your DS720+ NAS (they're actually welded together) and is CL19 Samsung manufactured"

"Blogs and forums recommend the 16 GB or 8 GB RAM from Crucial. However, the Crucial CL19 RAM memory has some incompatibility issued with the original preinstalled memory on your DS720+ NAS in some cases the crucial memory will not be able to read SSD-NVMe M.2 cache also DSM will show a notification listing the Crucial or HyperX RAM as non official at every start up/reboot"

"You will not receive any messages in your DSM System event notifications if you install the Samsung 8GB DDR4 CL19 2666MHz Product Code: M471A1K43CB1-CTD because I've tested it myself on my DS720+ and I can say with certainty that it's 100% compatible and perfect work with different SSD-NVMe M.2 brands."

"There are people on YouTube and Forums who have unknowingly and naively installed 16 GB of RAM in their Synology DS720+ and DS220+ but they do not understand that the processor will never use the excess memory. Even if their system detects 16 GB of memory, it will never be used by their CPU."

Regarding 2+8GB ram ... "Out of a total of 10GB, you will be using only 8GB. The remaining 2 GB won't be used"

Source last update 20 Aug 2020
https://mariushosting.com/synolo ... -buy-for-ds720-nas/


I think not only Samsung ram is compatible with 720+.  However the more important part of the article is, " the processor will never use the excess memory".  Really   ... believe it or not

Could anyone (using 2+8 or 2+16) show us the DS720+ memory utilisation screen capture, usage exceeding 8GB

ps. The article refers to DS720+ and DS220+ only.  DS920+ might be in a different situation.

pcqman

https://community.intel.com/t5/P ... ot-8GB/td-p/1222690

有人試過celeron j4125 maximum 可以用32GB ram, 遠多於官方網頁的8GB~

https://nascompares.com/2020/07/ ... installation-guide/

另外有人用ds220+測試（同ds720+硬件差唔多一樣）加16G 同32G....16+2正常亦可以用到，而32+2就已經入唔到DS

qkuser

有人試過celeron j4125 maximum 可以用32GB ram, 遠多於官方網頁的8GB~



另外有人用ds220+測試（同ds72 ...
pcqman 發表於 2020-12-12 16:13

yes j4125 係可以32g , 我有部j4125 用16g x 2 無問題.

benlee630

我買左kingston KVR26S19S6/8 8GB PC4-2666 CL19 260-pin SODIMM， 裝左藍燈一直閃。。。係咪買錯左。。

via HKEPC Reader for Android

ichigo1000

最近淘咗條三星16gb ram俾DS720+，少少波折但最後成功。賣家講咗個技巧，我分享俾大家參考：

“长按电源键关机，然后拆掉内存，用橡皮擦下内存金手指部分，重新安装内存，不要安装硬盘，注意是一块硬盘都不要安装的，然后开机，等待30分钟直至SATA灯变绿即可关机，装硬盘开机即可。”

一開始我同其他師兄一樣開唔到機一直閃藍燈，閃咗超過半個鐘都冇反應。跟住關機再用咗上面個方法，2分鐘唔使就聽到嗶一聲，再插返HDD再關機就得了。

fakeman

回覆 23# pc1668


    我無，但有人 720+ 裝 extra 8GB ram 後 Linux console 見到 system 係用到 10GB memory

https://community.synology.com/enu/forum/1/post/135372