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Synology

Synology DiskStation 4-Bay (Diskless) Network Attached Storage DS411SLIM (Black)

52 customer reviews

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CPU Frequency: 1.6GHz
Memory: DDR3 256MB
Internal HDD: 4x 2.5" SATA
LAN: 1x Gigabit
Power Recovery
AC Input Power Voltage: 100~240 V

2 used from $495.00

Synology DiskStation 4-Bay (Diskless) Network Attached Storage DS411SLIM (Black)

Available from these sellers.

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Technical details

Brand Name: Synology
Model Number: DS411SLIM
Disk Size: 16 GB
Product Warranty: 2 years limited
Item Display Weight: 1.65 Kilograms

Product description

Synology Disk Station DS411SLIM 4-Bay SATA NAS Server for Home and Small Office

Product information

Product Dimensions

4.1 x 4.7 x 5.6 inches

Item Weight

1.5 pounds

Shipping Weight

3.4 pounds

ASIN

B004L87XAC

Item model number

DS411SLIM

Customer Reviews

52 customer reviews

3.6 out of 5 stars

Best Sellers Rank

#531 in Electronics > Computers & Accessories > Data Storage > Network Attached Storage
#13,125 in Electronics > Computers & Accessories > Networking Products

Date first available at Amazon.com

February 17, 2011

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Reviews

3.6 out of 5 stars

5 star		58%
4 star		6%
3 star		6%
2 star		15%
1 star		15%

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Top Customer Reviews

Solves the noise problem

ByWonderboyon April 3, 2011

Verified Purchase

After ogling this for weeks I cracked down and pulled the trigger. It arrived a couple of days ago. So far I have been running the following (in parallel):

* migration of my backups and media library (from Readynas NV+), about 460 GB
* watched a movie
* played music on the Squeezebox Touch
* a remote backup of another Synology Diskstation over the Internet, 45GB
* hourly time machine backups (continuing on the sparsebundle from the NV+
* download of 4GB BitTorrent.

Even with the disks that busy, the fan sometimes turns completely off. The CPU temperature is consistently at 64 degrees Celsius and the 2 disks are at 42 degrees. My take on the temperature discussion is that these are the temperatures that both hard drives and CPU are designed for and running at these temperatures allows for a super quiet NAS.

This has less than half of the footprint and less than a quarter of the volume of the NV+. It looks quite futuristic, too. Works perfectly with currently 2 Western Digital 1 TB Scorpio Blue SATA 5200 RPM 8 MB Cache Bulk/OEM Notebook Hard Drive WD10TPVT. Much faster response than the NV+ when e.g. opening a folder, accessing the admin interface or picking and starting a song on the squeezebox.

I have only good things to say about it.

UPDATE (4/8/11)
Likely not related to the DS411slim, but nevertheless important for those who migrate from another NAS: Make sure you verify that the data is there after you copied it. I noticed skipping on a certain song that went away when I recopied the song from its original location. Upon comparing my old NAS with the DS411slim, many instances of corrupted data were discovered. I am using beyond compare, and compared a whole night long until I figured out that I did it wrong and didn't discover any inconsistencies. Now that I'm doing it right, many corrupted files have been discovered, and I fortunately could recopy them before reformatting and selling my old NAS. Look up file comparison in Wikipedia for a list of tools you can use. Probably there are safer mechanisms than I used to migrate the data in the first place, but this is definitely something to watch out for.

UPDATE (5/31/11)
Still looking good. Noticed that a 1 volume set-up using all available disk space cannot be changed later without reformatting. If you add a drive, it will extend the existing volume, it won't allow you to add a new volume on the additional space. For older Apple OS' Time Machine works better under iSCSI and iSCSI is faster on its own partition:
[...] /How_to_use_the_iSCSI_Target_Service_on_the_Synology_DiskStation#How_to_create_an_iSCSI_Target_on_the_Synology_DiskStation

UPDATE (2/21/12)
The DS411 has been used nonstop with a lot of downloading video, backing up another NAS remotely, playing music on the Squeezebox and time machine backup for 2 MacBooks. Not a hitch. Once a bit of dust got caught in the fan making a little noise, pulled it out, that's it. As much pleasure with this unit as on the first day. None of the concerns voiced by other reviewers have materialized.

UPDATE (7/28/13)
Still not a single problem. The DSM software has been getting continuously better and all updates went through easily. Even though the station is on nonstop, none of the hard drives have ever failed and the S.M.A.R.T. status for all is normal. Today I just added Amazon Glacier backup for the family photos. While it takes a little bit of frowning, I'd say they make it as easy as possible: create an AWS account, add payment option, then enter the AWS key and secret key in the NAS, choose which folders to back up, that's all. You don't even need to create a vault on the Amazon end, the DS does that automatically.

With the model now 2.5 years old it I was hoping for a successor that I can recommend to friends who want to buy a NAS now - but it seems there is still none in sight. Maybe DS411slim is still going too strong for them to worry about that - at least it seems there aren't many comparable devices out there, and the price hasn't changed in 2.5 years!

UPDATE (5/8/14)
After 3 years, the first drive broke down. Replaced it and the volume rebuilt without a problem. Chromecast playing videos from NAS, too.

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Great cloud

ByPamela Fayon February 7, 2014

Verified Purchase

I have two of these and I like them a lot. I am able to back my business up on one and then back it up again at the one I leave at my home. The web interface is very easy to use as well.

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High Idle Temps Make This No Go

ByC. ROMERon May 21, 2011

Verified Purchase

"...the fan does not spin while the unit hibernates and the CPU, which does NOT throttle down, sits scant millimeters away from drive four."

My initial testing of this unit was very favorable. Read speeds over 90MB/s, using basic 5400 RPM drives, on AFP with a 2011 MacBook Pro through an HP ProCurve 1GB switch. Writes speeds, using RAID 5, drop to half of this, which is still acceptable for a typical environment (i.e. home or small office share).

The size has to be seen first hand to appreciate how compact the unit is. The styling is nice, and the management software Synology's DiskStation Manager is pleasant to look at as well as easy to use (despite some options being scattered about).

However, PC transfer speeds (W7 on i7 with SSD over HP ProCurve 1GB, using FastCopy, and optimized network settings) seem to be much slower. I had trouble topping 50MB/s, while an i5 MacBook Pro can manage 70-90 MB/s on the same setup. Also, the CPU is banging away at 80% during single writes. I have doubts this would scale well.

Still, it's the idling unit temperatures that have been causing users issues (check Synology forums). Synology replies with temperature specs that are incredible. "76C is normal because 105C is the max, and the unit shuts down at 95C" (paraphrasing). In other words 167F is ok, because Synology doesn't consider it an issue until 203F!

To be clear, this is when the unit is Hibernating. Once everything is up and running, the unit cools down considerably. This is so even when all four drives are pushed to the max. The reason is the fan does not spin while the unit hibernates and the CPU, which does NOT throttle down, sits scant millimeters away from drive four. Synology considers the act of slowly baking your drives to be acceptable in their design.

If you do buy it, consider using no more than three drives. Also, check into the fan speed hacks, but do so with this warning. This is a direct quote from support:

"There are users on the forum who have submitted ways to edit the fan tables, but this voids our offer of support and you will need to proceed at your own discretion."