Since it's acquisition in 2011 Compellent became a Dell product line of storage solutions (e.g. Dell Compellent Storage Center). Compellent products became part of the Dell EMC SC Series of enterprise flash and SAN storage devices and are now EOL.
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DiskStation
Score 9.1 out of 10
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DiskStation is a line of network-attached storage (NAS) solutions from Synology headquartered in Taiwan.
All in all this series great in addressing issues applications that need flash storage as a backend storage supply. It addresses the need for fast, responsive servers that need to boot quickly. It is easy to use and for the most part there are few issues and none that can't be addressed/fixed quickly.
The Synology DiskStation is well suited as a NAS solution, easy enough to mirror a Windows file server shares setup. Access to the Hyperbackup utility eliminates the need to purchase a tape backup solution. A portable USB drive can be used as the initial backup target. For air gap purposes can connect Hyperbackup to the various cloud providers such as AWS, Azure, GCP to copy backup data there. Utilizing it as a backup solution has also been great, instead of purchasing a tape solution, tapes and an offsite tape repository. Active Backup for Business is another excellent backup utility for physical servers, VMWare virtual machines, etc. Restoring files is fairly intuitive. Until Synology introduced the dual controller setup, using it as a SAN was less appropriate as there was occasional downtime when the controller had an issue but this was less important for the scenarios we were using it for. It would be more of a concern if we had used it for things that require more robust uptime requirements. Overall we are happy with the features of the Synology DiskStation.
Dell Compellent support (Co-Pilot) and the add-on service (Optimize) are critical services that Dell Compellent does very well. Alerts from the array are sent to Co-Pilot where tickets are automatically generated and customers are notified of events. Of greater importance at times is the proactive support Co-Pilot and Optimize provide by contacting us of inefficiencies in the array and consulting on resolutions.
Enterprise Manager (Dell's "single pane of glass" management framework) is a useful tool for configuration/evaluation of the array and other Compellent products.
Ease of management. From firmware upgrades to managing server volumes the process is much simpler than with other arrays.
Synology DiskStation offers lots of options for creating links to share files or request that some uploads files. It makes it really easy to just share a link that can have an expiration or a set number of times it is accessed.
We always had enough storage on our Synology DiskStation, we never had to worry about something being too big to upload or share.
Love how you can create folders that are shared and also have some that are private. This makes it so easy to have shared collaborations with coworkers or clients, but also allows you to have a private place to save things that only you need.
The GUI could be a little more updated with a lot more information regarding usage.
There could be some assistance with high I/O times where snapshots go to consolidate. There seems to be issues when that attempts to occur, and there will times where the virtual machine stuns due to the I/O intensity.
Modification of multiple volumes or the creation of multiple volumes is a pain in the DSM management console.
While BTRFS is a more advanced file system than ext4, it also is in a perpetual state of development, with many features not fully functional and a plethora of bugs. Synology has managed to overcome many of these limitations by placing BTRFS on top of a LVM, but there are much better file systems that Synology could have used, such as OpenZFS.
DSM's built-in backup software, HyperBackup, while robust, oftentimes runs into issues. Specifically, backups can be working fine for months or years, and then suddenly the backups will fail. Sometimes these failures can be resolved, but oftentimes the backups need to be completely restarted. Fortunately, even when the backup fails, the existing backups are still accessible, it is just that new backups can not be performed.
The underlying Linux OS provides significant benefits, but also adds a fair amount of complexity. Most of that complexity is wonderfully hidden by the DSM interface, but when certain problems arise, delving into the Linux command line is not out of the question.
Perhaps the biggest issue with Synology DiskStation is Synology's support. The issue isn't that the support is bad, but it can be frustratingly slow when dealing with a major issue. Synology does have a very active community that is always willing to help, but nothing beats first-party support.
It provides us with great ROI compared with other solutions. It is also a versatile product, having NAS and SAN product lines depending on the business requirement. Furthermore, the implementation of dual controller lines would allow us to consider it for more critical applications to supplement the more enterprise-level SAN solution. It also is a wonderful backup solution, having all the applications available after purchase of the appliance without the further need to purchase additional software or licensing.
The Synology DiskStation is fairly easy to use, but maybe a challenge for those who not super IT savvy. With some trial and error, you can pretty much figure out how to configure the NAS the way you want it configured. I would say it is easy to use once it is set up and maintaining the device is likewise pretty straightforward as well.
This is not solely based on the support engineers themselves but more so that the logging and gotcha's that their array has. There have been multiple times where logs are pulled, but the folder is not large enough, and it crashes the array. Other times there are certain aspects that support either does not know of or isn't knowledgable about how to look at particular issues that could be causing problems.
Unfortunately, the one time I've had to reach out to DiskStation support, it did not go well. My NAS appliance wasn't appearing on the network, and no matter what the support team tried, they could not get it back online. Instead of offering to send me a new unit, they told me to go buy a new one - obviously, this was a disappointing response and not very eco-friendly either! Fortunately, through some internet research of my own, and some ingenuity, I figured out I could restore my NAS to factory settings by removing all the drives and resetting. Only then did I realize I had a bad disk. I had to experiment for a while to figure out which one it was. Once I had done that, though, I was able to get the latest DiskStation loaded back on, no thanks to the DiskStation support crew. If notifications were rock solid, I suspect I would have caught the bad disk before it because an OS problem, but I never received a bad-disk notification.
We selected Compellent solely based on price. Honestly I would rate it only slightly better than a QNAP we used (which was even cheaper). If performance and reliability are factors in your decision (and they should be) I would recommend looking at something like a VNXe.
Synology DiskStation packs a punch with the latest and greatest feature set which goes above and beyond many other vendors. It allows for a turn-key solution to cover almost every use case in the SMB market leaving other vendors behind.
It has helped us go from printing things out to file them away to going 100% digital with our files and documents because we have a secure place to save stuff.
We are organized. I can't really put a value or number to how amazing this is for us, but when we deal with so many documents and files it can be so hard to keep things organized, but with Synology DiskStation, we have all our files in specific places and it helps us stay organized and definitely saves time because things are so easy to find.
One negative thing has been that our Synology DiskStation relies on us either being plugged into the network in the office or having a strong internet connection at home. With the pandemic and everyone working from home, we have had "outages" where we were not able to sync our data, and things were lost and we had to start over.
