|Number of USB 2.0 Ports||1|
|Number of USB 3.0 Ports||1|
Synology Disk Station 4-Bay Diskless Network Attached Storage (DS416j)
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- Dual-core CPU with hardware encryption engine. Compatible Drive Type: 3.5" SATA III / SATA II HDD, 2.5" SATA III / SATA II HDD (with optional 2.5" Disk Holder), 2.5" SATA III / SATA II SSD (with optional 2.5" Disk Holder)
- Powerful entry-level 4-Bay NAS for home and personal use
- Brightness adjustable front LED indicators
- DLNA-certified media server
- Running on Synology Disk Station Manager (DSM)
- Over 112.82 MB/s reading, 101.2 MB/s writing
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From the manufacturer
The Ultimate Flexibility of Your Own Private Cloud
Synology’s private cloud solutions are designed to connect directly to your network for a quick and easy way to centralize and access all of your data. From simple automated backups to streaming your favorite multimedia to the big screen, the DS416j provides a safe and efficient way to manage your files.
Whether you’re on the go with our mobile apps or working from home, it’s never been easier to share, access, and sync all your files.
Tough, Ready, and Scalable NAS Optimized Drives
With the perfect balance of durability and agility, IronWolf NAS-optimized HDD’s meets the requirements to support running multiple applications developed by Synology on NAS.
Carry terabytes of data in your pocketCarry Terabytes of Data in Your Pocket
Remotely connect to your NAS from one of our mobile apps and have all your files at your fingertips whenever and wherever you need them.
Sync Your Data and Stay Connected
Cloud Station and Cloud Sync allows you to sync your files across all of your devices and multiple public cloud providers like Dropbox, Google Drive, and OneDrive.
Secure and Simple Backup Solutions
The DS416j provides secure, reliable, and affordable solutions for file protection with options to back up to the cloud, another NAS, external device, and more.
Create a Home Just for Your Multimedia
Synology’s multimedia packages allow you to organize and manage your vast collection of music, movies, photos and notes.
24/7 Smart Home Surveillance
Keep an eye on things at home with Surveillance Station, view and monitor live streams on desktop and mobile devices. Synology works seamlessly with Amcrest security cameras to view, monitor, and record what you love from anywhere in the world.
|Capacity:||up to 8TBs||up to 16TBs||up to 32TBs||16 TB|
|Automated Backups w/ Synology Hyper Backup:||✓||✓||✓||✓|
|Supported RAID Types:||-||Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1||Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10||Synology Hybrid RAID Basic JBOD RAID 0 RAID 1|
|Hardware Encryption Engine:||✓||✓||✓||✓|
|Mobile apps (iOS/Android)||✓||✓||✓||✓|
Synology Disk Station DS416j is a 4-bay NAS server specifically designed for home and personal users to effectively manage, protect and share data. You can enjoy effortless data sharing, multimedia streaming and cloud synchronization features while keeping data safe and secure. Synology DS416j is backed with Synology's 2-year limited warranty.
Top reviews from the United States
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Some background: I’m not a power user, but I do have more than casual interest in my home network. My primary use for a NAS is first: to store and stream large, uncompressed media files (more below), second: for synchronizing cloud storage (public and private), and third: backup/archiving. Two years ago, a friend gave me an old 212j (no longer working), and the 212j served my needs just fine, but ultimately I ran out of space and wanted to “future proof” my data needs, so expanding to a four-drive unit (vs. owning two independent two-drive units) seemed like the best option. One really neat thing about Synology is you can buy a NAS and use it without totally filling it up with drives. Currently I run this unit with only three drives, and will be adding a fourth down the line. I’m writing this review for the “brave novice,” not the intense power-user.
First, the hardware:
The first thing I noticed when unboxing the unit was the inclusion of thumb screws for the rear access drive panel. I took this as a gesture of blending function and form. Whereas the old 212j that I have was difficult to slip open once the screws were loosened with a screwdriver, the 416j’s rear access panel requires no pulling or twisting whatsoever to open, and no screwdriver is needed. This is a huge plus for those who will be adding/swapping drives more frequently, and for those who won’t be opening the unit much, it takes the worry and frustration out of the process of getting inside the unit.
The 416j has two 80mm fans positioned along the bottom of the drive bay panel, and upon closer inspection, I noticed that the airflow dynamics were first to pass cool air over the NAS’ motherboard (PCB), and that critical heat-generating components such as CPU have heat sinks which stick up high enough that the airflow generated by the cooling fans will pass right through them without creating too much unwanted backflow. From there, the air is redirected off the front panel and then up through the HDDs and finally along the ceiling of the outer panel toward the rear where the exhaust ports reside. The idea is that the heat from the HDDs will rise and then get pulled away from the source along the top of the unit, and then exit out the back. If you do not fill slot 4 (the HDD bay on the bottom), the ventilation system will create a tiny bit of self-defeating circular airflow (the exhaust ports are located above the fans, so some of the air will get sucked in, and immediately exit out the ports above, only to get sucked back in again on the outside of the unit), but not enough to compromise the cooling system. However, once you place a drive in bay #4, that HDD will serve to defeat any circular backflow because the fans will be forced to blow between the bottom of HDD 4 and the top of the PCB, so the cooling system is self-correcting, which is a huge added bonus. So if you’re not filling the NAS with four HDDs from the start, be sure to put one of them in bay #4 to get the best out of the unit’s static cooling setup. With three drives occupying the top three bays (not the fourth), during heavy CPU and HDD loads I never saw my drives exceed 97 degrees F on a hardwood floor within a climate-controlled home set to 70 F. The user can also have full control of four different cooling/fan configurations from within Synology’s browser-based GUI: Full Speed Mode (when the NAS is on, the fans run at full throttle), Cool Mode (the fans run at a higher speed, but not all the time), Quiet Mode (fans run at a lower speed at the expense of a warmer system), and Low-power Mode (same as Quiet Mode except the fans will come to a full stop when the system is cool). I’m not a heavy user, so I’ve had great success with Quiet Mode and Low-power mode.
New with the DiskManager 6.0 update is the ability to control the brightness of the flashing LEDs on the face of the unit. One can simply move a slider bar from “off” all the way to “bright,” or for those who wish to schedule LED brightness, a calendar pops up with days and hours for the user to choose how the NAS’ LED lights will behave. My unit is tucked away behind furniture, so I just left the LEDs at the default setting, but for those who keep the NAS in the open, the LED brightness scheduler is another indication of Synology’s balance between off-the-shelf simplicity and customization.
The unit itself is surprisingly small, and almost a perfect cube. I like the metallic alloy shell on the top and sides compared to the two-drive NAS units which are primarily made of plastic. The unit comes with large rubber feet which are affixed with screws (not glue), so sliding the unit occasionally will probably not weaken the rubber feet. The power cord is sufficiently long, but the end which attaches to the NAS is round, and if you’re trying to plug it in a darkly lit space, bring a flashlight (I use headlamps so I can work with both hands) so you can see how to align the power cord properly (there is a slight flatness to the top of the end of the cord so you could conceivably plug it in without looking directly at what you’re doing, but better fool-proof poka-yoke design on future units would improve this aspect).
Lastly, there are a number of HDD manufacturers out there who offer HDDs specific for NAS units. I haven’t done a lot of homework on the differences between NAS HDDs and desktop HDDs, but so far I’ve had very good luck with the Western Digital Red series. I’m willing to bet you could put just about any 3.5” HDD into these units and they would work properly, but I can’t say for sure. If I had to guess, I surmise the HDDs specific for NAS use probably aren’t designed for high performance or for holding boot sectors, but again, I’m just guessing. Currently I run the 416j with two WD 3TB Red (migrated from my old 212j) and one WD 5TB Red, with another 5TB Red on the way (I’ll explain more about what I know on HDD migration and expansion below).
Now, the software:
The beauty of Synology NAS, for me, is it can satisfy specific, complex needs, or it can easily satisfy novice users. Its software interface is an elegant balance between customizability and off-the-shelf friendliness. The main “operating system” of the NAS is called Disk Station Manager (or DSM), and it is so simple to use it makes me grin every time I log into it. A few high-level things to note for those who might be new to a NAS: 1) you’ll need to hard-wire the NAS into your home network via an Ethernet cable, which comes with the NAS (unless you buy a special Synology wi-fi dongle), 2) you’ll need a computer (PC, Mac, or Linux), and 3) you’ll need a web browser (any browser will do – I use Chrome). That’s all you’ll need to log into DSM to set things up. Once you have the NAS setup, unless your needs are always changing and super specific, you might go months without ever logging in. DSM comes with software that can log activity for you, which isn’t necessary, but for kicks I’ve always used it, and at one point, I went 13 months without ever logging into DSM. To me, the measurement of how good any software build might be is how little I need to use it. With DSM, you can make a hobby out of tweaking and optimizing your network every day, or set it up and never log into it ever again, and everything in between.
Once you’ve followed Synology’s quick setup guide (put some drives in there, button it up, and plug everything in), you’ll open a browser and type in “find.synology.com” (without quotation marks) to the address bar. From there, your home network will be searched for a Synology NAS, and once found, some super easy questions pop up verifying everything. It says it will take 10 minutes to set up DSM, with a nice large countdown clock, but it only took mine about three minutes get going. When you’re done, you’ll log into DSM with the username “admin” and a password like “password,” though I changed my password right away to something more secure.
This is where the fun begins. I’m not even sure where to begin, so I’m just going off of how I set mine up, which I believe is going to be pretty standard:
1). Control Panel. Like Windows, the Control Panel is where you can change NAS system and software settings. The list of stuff you can do is endless, and you owe it to yourself to spend some time googling what fits your needs. For me, the first thing I did was set the HDD hibernation time, which is located in the “Hardware & Power” section, “HDD Hibernation” tab. I like my drives to stay awake ready to read/write for 30 minutes, and then to power down if not utilized. In the “General” section is where you can change fan settings (per above), and LED brightness control/scheduling. There’s a tab for “Power Schedule,” where you can schedule full-system shutdown and power on by day and time (example: mine powers down at midnight and powers up at 5:30 every day), as well as “beep control.” The NAS will sound out a beep when certain actions happen (drive failure, fan malfunction, manual power up, etc.), so be sure you deselect the beep if you’re powering up your NAS automatically at a time when you’re sleeping or about to wake up. In Control Panel there’s also a Task Scheduler, which lets you turn on and off specific NAS services as well, so again, the ability to tweak things to your liking is super slick. In here I also set up “QuickConnect,” which allows access your NAS via DSM from any device anywhere in the world. For this you’ll sign up with Synology using your email, and be given right there on the spot a custom url for logging into your NAS from any browser. It will look something like [...]. File services and shared folders are also in Control Panel, where you can setup different folders to share with the devices on your network using a number of different sharing protocols (NFS, Mac, UPnP, etc.). And there’s security all along the way in case you want to ‘lock down’ specific parts of your network from others who might be using it. So next I went to where I store my media (movies in a folder called “movies” and music in a folder called “music,” naturally) and gave them all share access using UPnP and NFS protocols.
It’s also helpful to set up the NAS in your PC as network drives (just like your C: drive), but you don’t have to. In Windows, open a generic window and go to This PC. At the top, you should see a button in the “Drive Tools” ribbon that says “Map network drive.” Click on that, and then select the network. After a few moments, your NAS should pop up. Select the drive letter you want and the shared folder within the NAS that you want to act as a drive, and you can now access the NAS like you can any other hard drive on your computer. There’s a little checkbox which will ask if you want the drives to be activated when you log into Windows, and I checked it. In that case, if the HDDs are asleep, logging into Windows will wake them up from hibernation.
2). Package Center. This is what mobile device users would call “apps,” though these are not small, portable “apps” in the same sense – they are full-blown applications. There are many, many packages to install for your NAS, and depending on what you want to do, some of them are really nifty. Here are my favorites:
a). DLNA server. This sets the basic protocols for your NAS to show up and deliver media files to other devices accepting DLNA/UPnP protocols. It can be tweaked quite a bit, but the basic settings for me were sufficient.* My primary use for this NAS is media serving, and it works flawlessly.**
b). CouldSync. If you have files on DropBox, Google Drive, MS Cloud, Amazon Cloud, or any other popular cloud service, you need this. What it does is backs up what you have on your cloud drive to your home NAS, ensuring that all your files can be accessed and instantly backed up even if you lose your device, forget a password, or the internet goes down at home. What’s even cooler is if you are an Amazon Prime member, you can back up an infinite number of photos to Amazon Cloud for free, and those photos will be mirrored on your NAS. Every time I snap a photo on my phone, as soon as I’m back on wi-fi, it will synchronize with Amazon Cloud and that will synchronize with the NAS – all in the background. Furthermore, you can essentially “expand” your drive capacity with any service by unselecting bi-directional synchronization, so anything you put to the cloud goes to your NAS and all you have to do is delete everything on your cloud once in a while and it’s automatically backed up on your NAS – essentially expanding the storage capacity of your free online service to that of your NAS. I also use Android, and it integrates perfectly with all my portable applications.
c). Email Server. If you don’t like the 15GB cap on your “free” gmail account (or something similar), consider hosting your own email server with your Synology NAS. Storage is limited only by the amount of storage space you allocate within your NAS, and it works the same as the free online web-based email clients. There’s also no advertisements of any kind, and no “Big Brother” peering into your messages in an attempt to advertise to you or whatever. The emails are YOURS, and will be YOURS forever, because they’re on YOUR server. I love this aspect. It’s quite liberating, and super easy to implement thanks to the email setup wizard within the Package Center.
d). StorageManager. I’ve only scratched the surface of this nifty app, but it allows you to take an array of disks and split them apart, like a partition, with different protocols, sharing rights, security, etc. It’s as if you took one NAS and made it into two or three or whatever. So you can divide your NAS among family members seamlessly without problems.
3). File Station. This is like opening an explorer window on a Windows PC. From there you can view, edit, delete, upload or download files, create folders, etc. just like you can on a normal PC. You can even use File Station (and the other applications) from your phone within or outside your network.
There are many other packages besides these for things like backup, security, IP cameras, etc. It would take years of playing around with what is offered to become deeply acquainted with all of it.
If you’re on the fence about moving into a four-bay NAS, I recommend taking the plunge. I had the two-bay NAS (DS212j) for a few years, and found that I quickly ran out of space as I continued putting my audio and video libraries onto it, all the while wishing I had more space. With the four-bay NAS, you can still operate it with any number of drives up to four and Synology’s software will optimize available space along with backup redundancy automatically if you let it. If you have disks of varying sizes already, do not worry; Synology offers an online tool to show you how it would deal with the disks you have to both protect your data and give you as much space as possible - synology.com/en-us/support/RAID_calculator
With that, you’ll probably want to do some online research with respect to what it means to put a number of disks into an array if you haven’t already. The basic premise is that disks will eventually fail. It’s not an “if” situation – they contain moving parts – it’s a “when” situation. Basic, non-proprietary methods for backup redundancy are called “RAID,” and you can setup your NAS to follow traditional RAID configurations, and the online tool above lets the user play around with that. However, Synology engineers recognized the mathematical probability that only in very unusual circumstances will a RAID array have more than one disk fail at any given time. So they developed their own “Synology hybrid RAID” (SHR) which maximizes useable space with “single fault disk tolerance,” which protects your data in the NAS from a single HDD failure at any given time. Your data is protected by dividing it across the disks you put into the NAS, not leaving everything to chance on one disk. So when one disk goes down, you will get a warning beep (or, if you set up email or text warnings in DSM, you’ll get the beep and an email/text explaining the problem), and all you need to do is drop in a replacement disk, the software will rebuild everything the way it was based on what it “striped” across the other disks, and you’re back to normal. SHR is one of the coolest features of multi-bay NAS units. So using the online RAID tool, you can see what your situation will be now, and plan for what types of drives you’ll buy in the future as your needs expand. One thing to note: when adding a disk, it will take a day or two for the disk volume to expand and become available. They did this so that you can still use your NAS normally while it’s being expanded, which I thought was an incredible feature. I had two 3TB disks in mine when I added a 5TB disk, and it took 33 hours to expand the volume using SHR. This is normal.
Ultimately, owning a NAS isn’t just for computer geeks anymore. With Synology DiskStation Manager, it is now easier than ever to do some really cool things with your home network. NAS computing goes beyond just storage but also includes robust backup, low power consumption, ability to share, and remote access and management. To me, DSM has never taken a step backwards – always forward-thinking – and with a Synology NAS you get a blend of solid, reliable, high-performing hardware with intricately designed and elegant software – the best of both worlds.
* There are people out there who wish their Synology NAS to function as a Plex Media Server (PMS). Synology offers a legitimate, fully-licensed version of Plex available for download within DSM 6.0 and above which seems to work just fine. Where most people go wrong with PMS+Synology is getting their media into the right container/format to work with their chosen display device. THIS IS HUGELY IMPORTANT: Synology **J-series** NAS units are just a middle-man, and will not alter video/audio codecs to meet your device’s stringent compatibility requirements. If you have a device that supports “direct play,” like a PC, then the J series will work fine for you with NO TWEAKING. (Of all the popular set-top boxes available, Western Digital WDTV Live was the last device of its kind to support direct play of pretty much every codec/format out there, but I don’t think they make the WDTV box anymore. Although now I'm willing to bet that Android boxes can handle the load quite easily). However, if your device is finicky, like AppleTV or Roku, you face several options to stream video to your device from a J-series NAS: a) don’t buy a J-series NAS at all and instead get a Plus or Play series NAS which can handle on-the-fly transcoding of incompatible video/audio codecs for PMS, such as the 216play, 216+, 416play, etc. b) reencode all your video/audio to a format accepted by your device (Handbrake is a popular application for reencoding and/or remuxing incompatible video formats/containers) so that PMS can serve it up to your device/TV, or c) use a PMS on a PC or other device with authorized decoders and plenty of processing power as the network server (so, in essence, the files go from the NAS to the PC, then to your device). I cringe when I see people buy the J-series NAS and then complain that it doesn’t work with Plex. It does work with Plex, but you need to ensure you’re not requiring on-the-fly transcoding because the CPUs in the J-series NAS units is not enough to support transcoding. You MUST understand this before buying this machine for use as a media server.
** Again, file container/format of your TV/device is crucial here. I used to have a WDTV, which was a popular set-top box that supported Direct Play for all video and audio codecs, even lossless, uncompressed containers and codecs like FLAC, MKV (VC-1, MPEG-2, and MPEG-4), and MP4 (ditto MKV). It was destroyed in a power surge, and I tried to replace it with a Roku 3, which is great for streaming online content from popular services like Amazon Prime Videos, and for streaming COMPRESSED, LOSSY media like mp3s from a NAS. However, as a lossless archiver/purist, and given that I had 100+ movies and 400+ CDs all ripped to lossless mkv and FLAC formats which I did not want to re-rip (or re-encode with Handbrake) to lossy formats, I needed a small, easy-to-use direct play device and settled on a Raspberry Pi 3 running OSMC (a derivative of Kodi), which is the same thing or better than Plex Media Server. The RPi 3 is so small and light it doesn’t even require a case, and at $40 for the unit and a power cord, it was 4x cheaper than the WDTV box, and it can do way more. Setup was simple, it integrated seamlessly into my TV’s remote control (CEC), it supports direct play off Synology NAS units (warning: movie/TV scrapers will only work if you use the NFS, Windows workgroup, or Mac file share protocol - normal UPnP will work to serve up all your files just fine, but the aesthetic appeal of a full-blown movie scraper will not be available via UPnP), and the Pi uses about as much power as charging a cell phone. For me, it’s the affordable, compact home theater Direct Play device that integrates perfectly with Synology J-series NAS units and most TV remote controls. Highly recommended.
We use Synology arrays at my work. There we use their enterprise class rackable arrays (8 and 12 disk) configured as iSCSI connected to Windows servers on a SAN network. A couple of hundred users are supported this way. So I have some prior experience with Synology arrays.
When I wanted a “real” disk array at home, I did do my research, but I naturally gravitated to the brand that has worked so well for me in an office environment. I went with Synology’s lower-end 4-bay DS416j since it seemed to meet all my requirements. About the only feature not support in this array is hot-swappability, something I can definitely do without in a home environment.
DiskStation Manager (DSM) is the operating system (OS) for Synology arrays, and this is where their product really shines. DSM is a pleasure compared to other disk arrays I’ve used. And every Synology array uses the exact same DSM, regardless if it has 12 disks or 2. Also none of them are crippled in any way; if there’s a DSM feature you want to use, and it’s physically possible for your array to do it, it’s available.
To access DSM you use a web browser and enter the IP address your router assigned to the array by your router, followed by a colon and “5000”. For example 192.168.1.12:5000 might be a typical address. Chrome works very well with DSM. If you’re not sure what IP your array has, Synology provides a downloadable “Synology Assistant” that you can run on your PC to find and set your array’s IP. Once logged in, your browser window becomes like a screen into the DSM OS, which is a desktop/icons/windows kind of environment. The various packages (like apps) are icons that you can click to start, and they open new windows within your browser window. There are pre-installed packages for a Control Panel, Storage Manager, File Station, Resource Monitor, Log Center, DSM Help, Package Center, and more.
Storage Manager is where you’d initialize your disks and set the RAID level. File Station is where you setup shares on your network. Package Center is especially interesting, that’s where you can download and install new packages to give your array new capabilities. I currently have the following packages installed: Audio Station, for playing my music library over the network; Photo Station, for sharing photos over the network; Video Station, for playing my DVD and Blue-ray library over the network; Surveillance Station, a digital video recorder (DVR) for my several IP based security cameras; and Cloud Station Server, to backup all my other desktops and laptops over the network.
I chose to use Synology’s Video Station to serve my movie library since it is free and meets my needs. Actually it’s quite nice. As soon as you upload a movie file, so long as you’ve used the proper title, Video Station goes out and downloads the correct descriptive meta-data and cover shots. There are Video Station player apps available for Android, iOS, Roku, and Panasonic Blue-ray players. The Android app is castable to Chrome sticks too. The Plex Media server is also available, if you prefer. This array will not transcode video files, which I don’t care about, since I use Handbrake for that.
The Cloud Station Server comes with an app that you can install on any PC for free. It automatically uploads changed files to the Synology array to make continuous backups. It’s very configurable as to what and when it backs up, but I pretty much let it backup everything. Having a solid backup solution is comforting.
The Surveillance Station is a DVR for IP based security cameras. It is preconfigured to recognize dozens of different IP based security cams, including my Foscam ones. The amount of data recorded can be configured, and you can control and manage your cameras with the package. There are apps for Android and iOS to allow you to view the cams live, or review recordings. For free you can only have 2 cams configured, but you can buy a one-time license to add more cams. A 1 license pack costs $56, and a 4 license pack costs $200. I’m currently recording 5 cams at 1080p resolution and the array has no trouble keeping up.
And this is where I start to get a little excited about this product. This same little box not only gives me 8TB of network accessible storage (with four 3TB disks), but backs up all of my PCs, acts as a media server, and as a digital video recorder (DVR) for my home security system. That is a lot for this little thing to do, and it would take an enormous amount of work for me to duplicate it using something like Linux.
There are dozens of other packages you could install, antivirus, calendar, DNS, Java, iTunes server, Mail server, RADIUS, VPN server, Web server, Apache, Drupal, Git, Node.js, PHP, Perl, Python, Ruby, Tomcat, WordPress, are some examples. Synology Media Server supports DLNA and UPnP, although I don’t use those. It can also act as an Active Directory server or a Mac Time Machine. So this array has impressive capability.
A word or two (hundred) about RAID levels. Synology supports all the common RAID levels - RAID 0 (striping, no redundancy, both maximum space and risk), 1 (mirroring, 1 disk fault tolerance, “wastes” ½ of your disks), 5 (most common RAID, 1 disk fault tolerance, wastes one disk for parity), 6 (like RAID 5 except 2 disk tolerance, wastes two disks for parity), and SHR (Synology Hybrid RAID, more on this later). By “fault tolerance”, I mean the number of disk that can fail but the array remains usable. There are whole books written on RAID levels, and many simplified explanations online. Choosing your RAID level before you start is important because it is hard to change later.
At work I always use RAID 5 or 6, but for home use I chose Synology’s own SHR. Although Synology presents SHR as a beginner’s RAID for people who don’t want to try and learn the ramifications of the various other RAID levels, I think they undersell it. I’m an IT guy with decades of disk array and RAID experience, and I certainly understand all the RAID levels, but I still chose SHR for its considerable benefits. First, SHR is really just Linux LVM (Logical Volume Manager) under the hood, a well-supported and open source RAID solution. Second, SHR allows disks of various sizes to be used in the same RAID, and doesn’t waste the extra space on larger drives (conventional RAIDs treat all disk as being the same size as the smallest disk in the array). Third, SHR allows you to more easily expand an array later by installing larger drives. Fourth, SHR can be configured to be either 1 or 2 disk fault tolerant – I went with 1 disk fault tolerance.
When the array arrived I loaded it with four 3000TB Seagate NAS disks and configured the RAID to SHR. After all the initializing, RAIDing, and formatting, I ended up with 8.11TB of available space. I know that doesn’t seem like a lot, considering I started with four 3TB drives, but you lose a bunch of space to disk parity, file system overhead, operating system, not to mention that a drive marketed as 3TB (in base 10) isn’t really a 3TB (in base 2). Your final available space is always a bit disappointing, it’s something that you just have to live with.
Finally, I bought this array in June 2017. Now here it is February 2018 and even with four 3TB disks and 8.11TB of space, I’m over half full (those Blue-rays sure do take up space!), so it’s time to expand. The Synology SHR makes this easier than with other RAIDs. I began replacing the 3TB Seagate drives with 6TB Western Digital ones. The procedure is easy: shutdown the array, pull one (just one!) 3TB drive, replace it with one 6TB driver, power up, click Rebuild Array, wait for the rebuild to complete. Repeat for the next disk. After the first disk you don’t get any more space, but after the second my space went from 8.11TB to 10.82TB. After the third it went to 13.52TB. Finally the 4th is installed and gives me 15.8TB. The final size would have been slightly larger, but I have hit the partition size limit for this array model at 16TB. That 16TB is a hard limit on this model, but you can configure any extra space as a small second partition. The array remains fully available during the rebuilding operation, and no data is lost. The rebuilds took a day or two each, so after about a week my array has suddenly gotten twice as big. That’s cool.
The main drawback of the DS416j is that not all Synology applications will work with it. For example the new Active Backup app only works on the higher end models. You also really don't have features like hot drive swapping when one goes bad(you have to unscrew and take apart the DS416j to get at the drives). These limits are there due to the limits in the hardware itself. If an app takes a lot of CPU power or ram to run, you're pretty much out of luck. Do your research to make sure the feature or app you need is supported by the Synology model you plan to buy. But for reliable home or small office network storage it's hard to find any faults with the DS416j..
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S'éveille à 0h00 et se rendort à 3h00.
S'éteint proprement tout seul sur signal de l'UPS commun en cas de coupure de courant.
Peut se rallumer à la demande WOL (pc, tablette, smart) en cas de besoin.
Il faut absolument pas mal d'expérience en NAS, et Synology en particulier, sinon c'est galère au début ...