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Description
Synology RX418 4-Bay Expansion UnitFor the Synology RS818+ & RS818RP+ For the Synology RS815+ & RS815RP+ For the Synology RS816 & RS815 4 x 3. 5" 2. 5" SATA Drive Bays 1 x eSATA Port Hot Swappable Drives RAID Management through Synology DSM The RX418 4 Bay Expansion Unit from Synology is designed to provide storage expansion for their RS818+ RS818RP+, RS815+, RS815RP+, RS816, and RS815 NAS arrays. It can also be used as a dedicated local backup destination for Synology 1 RU RackStation
- For the Synology RS818+ & RS818RP+
- For the Synology RS815+ & RS815RP+
- For the Synology RS816 & RS815
- 4 x 3.5"/2.5" SATA Drive Bays
- 1 x eSATA Port
- Hot-Swappable Drives
- RAID Management through Synology DSM
The RX418 4-Bay Expansion Unit from Synology is designed to provide storage expansion for their RS818+ RS818RP+, RS815+, RS815RP+, RS816, and RS815 NAS arrays. It can also be used as a dedicated local backup destination for Synology 1 RU RackStation arrays for comprehensive data protection.
The four drive bays of the RX418 natively support 3.5" and 2.5" SATA hard drives and SSDs. The drives are hot-swappable and there is also RAID management through Synology Disk Station Manager. The RX418 is equipped an eSATA port, which allows for connectivity with your host NAS, and operates using a 100W power supply that run using 100-240 VAC at 50/60 Hz. Included is an accessory pack, an AC power cord, and an eSATA cable.
General Features
- Storage Capacity Expansion
- When the storage capacity on a Synology 1 RU RackStation reaches its limit, Synology's RX418 expansion unit provides easy capacity expansion by adding four 3.5"/2.5" SATA drives to the system. The Synology RX418 can also be used as a dedicated local backup destination of a Synology 1 RU RackStation for comprehensive data protection.
- Plug-and-Play Design
- Simply connect the Synology RX418 to a corresponding Synology RackStation and it is ready to use. Drives in the connected Synology RX418 operate as though they were internal to the connected Synology NAS and can be managed directly by Synology DiskStation Manager (DSM), with no additional software installation required.
- Green and Easy to Manage
- Synology's DSM provides an intuitive user interface for easy system management. Drive hibernation can be configured in DSM to take effect automatically when the system has been inactive for a period of time. This not only saves energy but also extends the lifespan of the installed drives.
UPC: 846504002986
Synology Expansion Unit RX418 specs
| Hardware Specifications | |
|---|---|
| Compatible Models | RS818+ / RS818RP+ RS815+ / RS815RP+ RS816 RS815 Some models support independent volume creation only |
| Storage | |
|---|---|
| Drive Bays | 4 |
| Compatible Drive Types | 3.5" SATA HDDs 2.5" SATA HDDs 2.5" SATA SSDs |
| Maximum Internal Raw Capacity | 48 TB (4 x 12 TB, capacity may vary by RAID types) |
| Hot-Swappable Drive | Yes |
| RAID Management through Synology DSM | Yes |
| External Ports | |
|---|---|
| eSATA Port | 1 |
| Power | |
|---|---|
| Power Recovery | Synchronized with the Synology RackStation |
| Power Supply Unit / Adapter | 100 W |
| AC Input Power Voltage | 100 to 240 VAC |
| Power Frequency | 50 to 60 Hz, Single Phase |
| Power Consumption | Access: 23.26 W Hibernation: 6.39 W |
| Temperature & Humidity | |
|---|---|
| Operating Temperature | 40 to 95°F / 4 to 35°C |
| Storage Temperature | -5 to 140°F / -21 to 60°C |
| Relative Humidity | 5 to 95% RH |
| General | |
|---|---|
| System Fan | 40 x 40 mm (3 pieces) |
| Noise Level | 25.1 dBA |
| Dimensions | 1.7 x 18.9 x 12.8" / 44 x 480 x 325 mm |
| Weight | 9.44 lb / 4.28 kg |
| Packaging Info | |
|---|---|
| Package Weight | 13.5 lb |
| Box Dimensions (LxWxH) | 20.7 x 15.7 x 5.6" |
In the Box
Synology RX418 4-Bay Expansion Unit
- Accessory Pack
- AC Power Cord
- eSATA Cable
- Limited 3-Year Hardware Warranty
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Hallelujah… finally, I found the right pillow!!!
Size: Queen (Pack of 1), Color: White
I have spent a lot of money searching for the right pillow. I recently tried to Tempur-pedic that cost twice with this pillow cost. Tempur-pedic flattened out. I’ve had this pill for a few weeks now and it works wonders. I am a paraplegic. You can have a lot of neck problems. I love the fact that this pillow is adjustable. I immediately saw it was too stuffy and took a bunch out. It works perfect so glad I didn’t spend money on a $200 purple pillow.
I read a lot of reviews and there were a lot of complaints about the odor. Mine did smell funny when it came out of the box. I immediately threw it in the dryer with a few bounce fabric sheets came out smelling fine.
Pillows are a very individual thing, but I think for 40 bucks this pillow is worth a try. I’m really enjoying mine about one of those silk pillowcases to go over it and it sleeps cool and comfortable. Best wishes in your search for the right pillow.
Update: I’ve been using this pillow several months and it continues. Give me a good night rest pain-free.. well worth the money.
UPDATE: I have been using this pillow for three months and it still works great. It does not flat out or get hot..
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Reviewed in the United States on January 29, 2026
★★★★★ 5
Soft comfortable very good pillow
Size: King (Pack of 1), Color: White
I really love my new pillow it's great and comfortable. Yes, it has a little smell, but if you wash the pillowcase and put the pillow on the window for a day you won't notice anything anymore.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Best place for head
Size: Queen (Pack of 1), Color: White
Do you love not getting sleep and sweating all over your pillow at night when you are asleep? If so then don't buy this pillow! If you want a good nights sleep and cool pillow like me this is the one. Ive always been ehh towards spending so much on a pillow but its 100% worth it, I sleep so much better and it forms to my head and keeps me cool at night. Great support even for my big head and comes with a bag of extra stuffing if you want to have a little more firmer pillow. Highly recommend
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Reviewed in the United States on April 4, 2026
★★★★★ 3
Oversized
Size: Queen (Pack of 2), Color: White
I have chronic neck pain. I am forever buying new pillows. Sometimes I think I found the perfect pillow but then three months later they’re losing their loft. I thought I would give these pillows to try since the stuffing is removable. Now these pillows are really oversized. To the point where I thought that they had sent me king-size pillows but I double checked the packaging and they were Queen. I ended up having to buy king-size pillowcases for them because they just barely fit in the queen size and the pillowcases would always end up pulling back from the edge. So that’s a negative one star there. Now I’ve been sleeping on these pillows for a while and they have held up well. I did end up removing some of the stuffing because it was just too much. I’m a side sleeper and when I use this pillow, it does a good job of keeping my neck in alignment. However, the pillow tends to migrate up as I sleep. Or I tend to slip down off the pillow, either or. So that’s why I’ve removed a second star. Maybe if I removed more stuffing that wouldn’t happen, but then I feel like the loft would be too little. I will say that these provide great support when sitting up in bed reading or watching TV. So would I buy them again? Probably not. Am I going to keep using them? Yes
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Reviewed in the United States on December 23, 2025
★★★★★ 5
Amazing - Stop Scrolling and Buy This Pillow
Size: Queen (Pack of 1), Color: White
I have been an Amazon customer ever since the very beginning, and this is my first review. Not because I haven’t purchased tons of amazing things (and a few bad ones), just never felt the need.
However, I researched pillows for longer than I care to admit, and decided on this one.
I’ve had it for about six months and absolutely love it. No lie, I genuinely look forward lying my big head on it after a long day.
I am a side sleeper, but flip flop all around through the night and it’s great in every position.
Pros:
Stays nice and cool, which is soothing regardless of the time of year.
Has a sort of quilted textured pattern on the zip up cover, gives it a luxury feel, that breaths nicely even when a pillow case is added.
The fill is fully adjustable to your preference.
I knew it came with extra filling but was worried it would not be enough. Wrong. It was very full and I ended up taking some out until it was perfect.
It comes vacuum sealed and suggests it may take some time to fully take shape. However, I found it to be about 90% almost instantly and was sleeping on it a couple hours later.
There was no unpleasant scent sometimes associated with memory foam items.
The foam itself is very nice, a mix of what appears to be shredded and cotton candy cloud like. Very brilliant idea, as it is somehow supportive, soft and firm all at once.
The affordability of this pillow compared to some of the others in this category can’t be overstated.
Oh, and the packaging was very thoughtfully and securely done.
If you are like me, an over thinker, I would suggest just taking this for a spin. It’s amazing.
I’m not a bot, or working for the company. I’m just truly satisfied, love this pillow, and have been sleeping great.
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Reviewed in the United States on April 6, 2026
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