I only know what I know...which is my IT world. Having two datacenters that were physical servers attached to a SAN that "attempted" to replicate and then migrating. For a SMB small IT shop that happens to have two datacenters already in place...this has been ideal. I can have a generalist maintain the system and we have a private cloud for DR with hardly any effort...the biggest gain by far!
Windows Server and Active Directory is very robust and stable, it has been a staple in every IT environment I have worked in during my career. Junior to Intermediate admins can learn Windows Server easily, the user interfaces make administration tasks very easy as well as the documentation available through a vast amount of resources. There are other Operating Systems available with no GUI which has a smaller attack surface, faster update installation and reboot time. Windows Server does have the ability to remove the desktop experience, however it is not something I have had experience with and I believe most administrators choose not to remove it.
Deduplication and Compression - SimpliVity keeps the space consumption to a minimum. We currently have 60 servers running virtually and we still have room to grow. This really helps with the backups as we can have longer retention.
Backups - Ability to keep backups for longer and to create multiple backup policies for a VM is a breeze. You can have a backup policy for each datastore as well as a separate backup policy for the same VM.
Creating Datastores is very easy. No more messing around with LUNS and iSCSI. Just go to the SimpliVity tab and select create datastore and it's done. You can also increase the datastore on the fly as well as have a datastore bigger than 2TB.
File level recovery is included as well. The whole backup process in SimpliVity can help you do away with other software.
Microsoft needs to minimize the update frequency by making the product more secure. It can become very exhausting trying to keep updated if you don't have a dedicated support team. It can become challenging where the business is unable to allow downtime for reboots as part of the update process.
Prone to security and audit vulnerabilities.
The operating system needs more CPU and memory resources compared to other options such as Linux.
Understanding the licensing model can be abit confusing.
Comes with a standard firewall, but not the most secured one available. Would suggest using a more secured firewall as part of your antivirus software.
Due to the number of vulnerabilities and the operating system being a target for hackers, anti-virus software is a must.
I've carefully reviewed the servers and services currently running on Windows Server 2012, and given the opportunity would renew them as is going forward. There are two systems I currently have in place, one is a very large Linux implementation for a large ecommerce site, and one is a very large backup solution front ended by FTP servers running Linux. Neither are well suited for Windows, but the overall network infrastructure is and will be Windows Server for the foreseeable future.
It sits nicely ontop of VMWare and is easy enough to use. Some improvements to the UI could be done, such as placing buttons where it is expected to have them not in unusual places, so you have to hunt for them. The backup and restore is intuitive and makes things super easy if you need to do a quick rollback. Space savings on multiple VMs and backups means we are backing up more than we need which gives us confidence in what we do. Updating the system is also fairly easy and their support has always been fantastic. They will contact us if they detect any issues, usually before we notice them!
Anyone new to IT could easily use the familiar Desktop Experience (GUI) version because we all know how to use Windows, whether a client or server version. Once an IT user is more comfortable with the operating system, they can move on to the Core version, which is the way to go in almost all situations.
Support is very good. With proactive support, you are supported by an engineer in North America who answers the phone and immediately begins assisting with your issue. The folks I have dealt with in the last several years have been very skilled and it is rare to have a ticket open for more than a day or two. Issues affecting production are dealt with appropriately and are escalated within the support organization.
Microsoft's support is hugely wide-ranging from articles online to having to contact them directly for the more serious issues. In recent years when I have contacted them directly, I have found the support o be excellent as I have found myself connected to very knowledgeable people in the field in which I needed the support. The online support available is vast and I tend to find most of the time that there is always someone out there who has had the same issue as me in the past and knows something about how to resolve it! This is the advantage of using industry standard and long-established systems such as Windows Server.
Make sure that you have detailed processes in place for every server instance you plan to install/upgrade, if possible get the base OS loaded and Windows Updates applied ahead of time, and if using a VM take a snapshot prior to installing each role, as well as along the way.
They are different experiences, and while the other solutions offer enterprise-grade stability and, in some cases, address Windows server shortcomings (such as patching), they all do the trick, but the other solutions require a deeper technical background/configuration of items at the command line, which some people are not fully comfortable with.
HPE SimpliVity provided us with the ability to replace our existing infrastructure with a solution that provided better backup and recovery, and an off-site DR solution, at a lower price point than other solutions.