Business File Server

Windows Server AntiVirus & Network Security | AVG Business
I would recommend getting a new file storage system that does not consume a lot of power:

CPU: Intel Core i3-6100 3.7GHz Dual-Core Processor ($111.99 @ SuperBiiz)
Motherboard: Gigabyte GA-H110M-A Micro ATX LGA1151 Motherboard ($53.99 @ SuperBiiz)
Memory: Crucial 4GB (1 x 4GB) DDR4-2133 Memory ($16.99 @ Amazon)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($65.89 @ OutletPC)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($29.99 @ Newegg)
Power Supply: Silverstone 300W 80+ Bronze Certified SFX Power Supply ($48.99 @ SuperBiiz)
Total: $327.84
Prices include shipping, taxes, and discounts when available

There is enough storage for whatever you need, and this can be used to install Windows on, then using Windows set up file sharing across the network. You could install FileZilla server for your FTP needs.

To answer your questions:

Files that are accessed from the NAS are temporarily stored on the client computer that is working on it, once the client hits save, its gets saved to the server where the file was originally found.

Where you say "Or that other users accessing the drives will slow the programs down." i think of it in 2 different ways. The first is, when the client opens up a document, it will slow down the program that the client is editing it with. The answer to that is no. The second is, when the client opens up a document, it will slow the program that is running on the server, the answer to that is also no.

If you set up permissions by denying members the ability to delete from a network share, then there will be no way for a user to delete it, unless they are using the actual server where the file is stored on (which is highly unlikely unless you will be using the NAS as a desktop computer).

Rather get a Windows tower, like in the build above, as it gives more headroom for upgrades. You could even use this computer as a NAS, a website hosting box (upgrade CPU and RAM: Core i5 6500 and 16GB will be great for that), and also as a domain controller for the PCs on the network (upgrade CPU and RAM: Core Xeon for best efficiency and 32GB ECC RAM).

PCM Win Server 2012 R2 Standard (64-bit) - (2 CPU/2 VM)
CE (PCM)
  • Enterprise-class
  • Simple and cost-effective
  • Virtualization: Run up to two virtual machines on up to two CPUs
  • Full OEM Version of Windows Server 2012 R2 Standard Edition
Microsoft OEM Software Microsoft Windows Server 2012 Standard 64-bit English - 2CPU/2VM Base License (w/ Media, no CALs)
Personal Computer (Microsoft OEM Software)
  • Hyper-V 2.0 - included in the operating system and provides 16x improvement in the amount of vCPU and RAM assignable to virtual machines
  • Live Migration - move virtual machines between physical servers with no downtime or loss of data
  • Hyper-V Replica - replicate virtual machines to another server in another location every 5 minutes
  • Deduplication - automatically reduce wasted storage
  • Storage Spaces - build your own virtualize storage pools to provide redundancy and performance
Seagate Seagate Savvio 15K.2 73.4 GB 15000RPM SAS 6-Gb/S 16MB Cache 2.5-Inch Internal Bare Drive ST973452SS
CE (Seagate)
  • 115 percent improvement in system-level performance over 3.5-inch 15K drives
  • Seagate PowerTrim technology dynamically reduces power up to 70 percent over comparable 3.5-inch 15K drives.
  • IOPS/W are 2.5 times better than comparable 3.5-inch Tier-1 drives
  • 70 percent smaller size than 3.5-inch drives reduces overall system cooling costs.
  • Supports 6-Gb/s transfer rates and SAS 2.0 feature set
  • Enables economical, high-performance storage system solutions
  • Delivers on Seagate Unified Storage architecture strategy to converge best-of-breed technologies (SAS, small form factor and SED security*) to enable powerful yet...
TRENDnet TRENDnet 2-Bay Diskless SATA I/II Network Attached Storage Enclosure TS-S402 (Black)
CE (TRENDnet)
  • Share documents, videos and more at Gigabit speeds 2 Serial ATA I/II hard drives of your choice (HD not included)
  • Quickly expand your storage or download media with 2 external USB ports Manage your data from any Internet connection
  • Control content and user access with the feature rich management interface Schedule data backups via FTP and HTTP servers without turning on your PC
  • Supports your favorite USB storage devices such as external hard drives and flash drives.
  • Ensure complete mirrored backup with RAID 1 and improve performance with RAID 0 technology
  • Features to make two hard drives act as one Provides USB one-click backup, to copy USB contents to HD just by pressing a button
Intel Intel Server Board S2400SC2 SSI CEB DDR3 1600 Motherboard DBS2400SC2
Personal Computer (Intel)
  • Intel Trusted Platform Module (Intel TPM) header for Intel Trusted Execution Technology (Intel TXT) support
  • Integrated dual NICs
  • Eight memory sockets support U/R DDR3 DIMMs delivering up to 128 GB memory capacity

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