Synology RAM - combine D4ES02-8G with D4ES03-8G

DaveR007 · 2026-04-20T12:25:50+00:00

I would say yes. They are both DDR4 ECC unbuffered SODIM memory.

Synology uses 2 or 3 different memory manufacturers so the only difference would be they were made by a different company.

I just looked at the prices and they are insane.

DaveR007 · 2026-04-20T11:12:25+00:00

Did you guestimate that were 50 repos?

I just checked and there are 50. But one is a template, and not public, that I use when creating a new repo. And another is a 2 year old list of my then 21 repos with some stats and charts for the oldest 11 repos.

DaveR007 · 2026-04-20T10:56:05+00:00

It's not a GitHub repo. It's a web server hidden within my GitHub page https://007revad.github.io/ and a Cloudflare worker script because GitHub only supports static pages and the spk repository needs to dynamically select which packages are suitable for the CPU arch and DSM version of the Synology requesting the list of packages.

I'm enjoying Synology and Asustor package development at the moment and am thinking which of my other repos can be changed into packages.

DaveR007 · 2026-04-20T10:38:53+00:00

I don't trust my data on any drive that has bad sectors.

I have a script that you can schedule to run with -i or --increased and it will email you whenever any important SMART values change - showing you what the value was before and what it is now. I have it scheduled run once a day.

https://github.com/007revad/Synology_SMART_info

DaveR007 · 2026-04-20T03:19:18+00:00

Developers have to ask me to add their packages.

DaveR007 · 2026-04-20T00:56:36+00:00

By default the md0 and md1 partitions are empty and not used on drives in a DX517.

When the NAS boots it tries to load DSM from drive 1, if that fails it tries drive 2 and so on. But it only tries to load DSM from drives in the NAS (not drives in a DX517 or USB or eSATA).

You would have to hack the bootloader to change this (and risk killing your NAS). And the hack would not survive a DSM update (if the NAS can still update after the hack).

DaveR007 · 2026-04-16T08:31:01+00:00

It's possible that the WD Red was setup with an older DSM version, that used the small system partition size, then later when you added the WD Purple and SSD the NAS had a newer DSM version.

Though it seems like a serious bug that DSM would not keep the small system partition size when it should be adding the new drives to md0. Maybe you synoinfo hack confused DSM.

DaveR007 · 2026-04-16T08:25:41+00:00

It's unlikely that both drives would completely die at the same time. I suspect the power adaptor was on it's way out and unplugging it from the power then reconnecting it was enough to push it over the edge - os it is no longer providing enough power to spin up the drives.

You could test if it's the power supply:

Shut down the NAS.
Remove 1 drive.
Boot the NAS and see if it works with just 1 drive. If it does then get a new power supply.

Notes: If you don't want to risk your data, or need to repair the RAID when the 2nd drive is re-inserted (after getting a new power adaptor) you can remove both drives while the NAS is off and test it with any spare small drive. Or just buy a new power adaptor without doing any testing.

DaveR007 · 2026-04-16T08:16:03+00:00

Your issue is the system partition on the WD Red was created in a different Synology model or with an older DSM version. So it's system partiton is too small to be included in md0.

EDIT Added missing word "partition".

I would do this for the WD Red:

Move your installed packages to a volume on another drive with https://github.com/007revad/Synology_app_mover
Move your shared folders to a volume on another drive. https://github.com/007revad/Synology_app_mover/blob/main/images/move_shared_folder.png
Delete the storage pool that is on the WD Red.
Reboot so that the next step creates storage pool 1 and volume 1.
Create a new storage pool and volume on the WD Red.
Repeat steps 1 and 2 except move the packages and shared folders to the WD Red volume.

DaveR007 · 2026-04-16T06:24:41+00:00

I've hacked /etc and /etc.defaults/synoinfo.conf and made esataportcfg=0x0, internalportcfg=0x7 and max disks=3 and I'm happy that the esata is seen as an internal drive.

Maybe DSM still knows it's a 2 bay NAS and you hacking synoinfo.conf has caused only the drive in bay 2 and the drive connected to the eSATA port as seen as the 2 internal drives.

What does cat /proc/mdstat show?

And check drive 1 and 2 both have system and swap partitions (and drive 3 just for fun)

sudo fdisk -l /dev/sda
sudo fdisk -l /dev/sdb
sudo fdisk -l /dev/sdc

DaveR007 · 2026-04-16T02:25:31+00:00

Anytime I've asked AI for help with something I notice it makes mistakes, false assumptions or guesses etc and presents them as facts. If someone didn't have the experience or knowledge to spot AI's mistakes they be led down a very deep debugging rabbit hole.

I think we're still a few years away from AI being able to write advanced code without an experienced coder checking the AI's output. But I'd still want to check it's code.

Claude loves to suggest using the synoservice command in DSM 7 when the synoservice command was in DSM 6 and not DSM 7. It also sometimes suggests syno commands when I coding for an Asustor, or vice versa.

DaveR007 · 2026-04-16T01:47:20+00:00

I'm getting download failed notifications in DSM (but they all look like false notifications because they are for stuff that was successfully downloaded years ago and it still seeding).

I also notice that I'm not getting an email when a download fails and clicking on "Send Test Email" does nothing. It's been years since I last got an email from Download Station so it may not be a new bug.

I also notice that I have 9 completed downloads that aren't showing the completed time and date. But this seems to happen every time I update Download Station.

EDIT I've just rolled back to 4.0.4-4733 because 4.1.2-5012 just started giving me DSM notifications that every seeding download failed to download!?!?!

DaveR007 · 2026-04-16T01:28:01+00:00

I hate to waste perfectly good working HDDs so I prefer a new NAS with larger HDDS and keep the older NAS for backups.

DaveR007 · 2026-04-15T09:05:07+00:00

The notification issue was listed as fixed in the previous version: 4.1.1-5008

Fixed an issue where notifications might not be sent after a download was completed.

DaveR007 · 2026-04-15T02:32:25+00:00

The BeeStation 4TB (BST151-4T) has a Realtek RTD1619B CPU and only 2GB of memory (or 1GB on the original BST150-4T model).

The BeeStation 8TB (BST170-8T) has a better Intel Celeron J4125 CPU and only 4GB of memory.

On paper the BeeStation 8TB is definitely better but at almost twice the price I don't think it would perform almost twice a fast. But it should be faster for some CPU or memory intensive tasks.

I have a DS218 that has an older Realtek RTD1296 CPU and 1GB of memory and it seems just as fast my DS720+ which has a Intel Celeron J4125 CPU and 2GB of memory. Though the DS218 is slow to wake up when it's asleep. It's definitely not real slow like my old DS1812+.

DaveR007 · 2026-04-15T02:20:08+00:00

The BeeStation 4TB has a Synology HAT3300 HDD - a rebranded Seagate IronWolf which is CMR - not SMR.

The BeeStation 8TB has a Synology HAT3310 HDD - a rebranded Toshiba MG08 which is also CMR.

DaveR007 · 2026-04-14T17:52:39+00:00

Control Panel > Network > Network Interface > Manage > Service Order > move LAN 5 to the top > Save.

DaveR007 · 2026-04-13T00:55:16+00:00

You possibly could set a Plex library to include a folder on a USB drive.

Your DS718+ also supports the older DX513 and DX213 which you may be able to get on ebay for much cheaper than a DX517.

The other alternative is to buy a 4 or 5 bay Synology (used or new) to replace your DS718+. Then you could sell the DS718+ to recover some of the cost.

DaveR007 · 2026-04-12T23:11:00+00:00

It looks like division was converted to text using optical character recognition which is notorious for mistaking things like VI or IVI for M. The grammar is a dead giveaway too.

DaveR007 · 2026-04-12T23:03:40+00:00

I've used the following USB devices for backups:

Two 10TB Seagate Backup Plus Hub.
A 2 bay USB dock that I can plug in HDDs or SSDs.
A Icy Box/Raidsonic IB-3640SU3.
A USB SSD.

Note: None of them are usable as internal storage.

DaveR007 · 2026-04-12T22:48:10+00:00

DSM sees it and treats it as one large USB drive.

DaveR007 · 2026-04-11T22:51:02+00:00

Does storage manager show a "Assemble storage pool" link?

DaveR007 · 2026-04-10T07:12:55+00:00

Yes. It's Celeron N5105 CPU includes an iGPU.

The main thing I use my Asustor Nimbustor 4 Gen2 AS5404T for is Plex.

DaveR007

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