Reddit reviews Tripp Lite 25U 4-Post Open Frame Rack, Network Equipment Rack, 1000 lb. Capacity (SR4POST25),Black
We found 10 Reddit comments about Tripp Lite 25U 4-Post Open Frame Rack, Network Equipment Rack, 1000 lb. Capacity (SR4POST25),Black. Here are the top ones, ranked by their Reddit score.
Supports 1000lbs of rackmount equipmentAdjustable mounting depth (22 to 36 inches)Heavy-duty cold-rolled steel constructionNumbered mounting positionsBolt down provisionsSelf squaring designBlackEasy assembly finishFive year repair or replacement warranty
Those are usually APC, Dell, HP, Cisco, etc - commercial grade stuff. StarTech and a few others make consumer and commercial grade products, so generally open racks, 25U, adjustable, rather than only bulletproof sturdy cage/door racks.
Here's the StarTech 25U one I have (I picked it up used off Kijiji though, $80)
Here's a similar one from Tripp-Lite, also 25U open. Don't usually see these in datacenters, because those are all 42U/45U, enclosed.
That being said, the StarTech rack is excellent, as it's adjustable depth, has casters, and a lower profile than something with front/back door + side panels. Depends on budget + needs. I'm in a condo, so having a 42U+ closed rack would be way overkill (and a pain to even get into the elevator...)
As far as racks go, you can get a standard 45U rack pretty cheap off of ebay because companies surplus their old ones. I've looked for months for a cheap small one (16-25U) and haven't found one under $200 or so. As far as buying new, this is the best deal I've found (for a 4-post rack, which you want for servers as they get heavy and can tip with 2-posts):
http://www.amazon.com/Tripp-Lite-SR4POST25-Cabinet-Capacity/dp/B004OB8T72/ref=sr_1_1?ie=UTF8&qid=1416882880&sr=8-1&keywords=server+rack
Tripp Lite SR4POST25 25U 4-Post Open Frame Rack - Amazon
This works great, especially with the wheels.
I bought this rack - https://www.amazon.com/gp/product/B004OB8T72
It has adjustable depth and works fine for mounting servers.
I may have found a better alternative based upon this picture below.
https://i.imgur.com/ean3qcw.jpg
 
NavePoint Adjustable Rack Mount Server Shelf Shelves Rail Rails 1U (33.25" max depth)
https://www.amazon.com/gp/product/B0060RUVBA/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=A3FG64J8IOS59V
 
Should work with this cabinet below.
 
Tripp Lite 25U 4-Post Open Frame Rack, Network Equipment Rack, 1000 lb. Capacity (SR4POST25) 22" to 36" depth
https://www.amazon.com/gp/product/B004OB8T72/ref=ox_sc_sfl_title_2?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
That rack looked a little sketchy to me when I was shopping for a rack. I bought this one. at the time it was $50 cheaper on amazon.
I use this. They sell smaller versions too. Tripp Lite SR4POST25 25U 4-Post Open Frame Rack Cabinet Square Holes 1000lb Capacity https://www.amazon.com/dp/B004OB8T72/ref=cm_sw_r_cp_awd_dC2FwbVXH3B3N
This was a simple cluster, not really designed for running a lot of VMs. We run 3 AD servers, a File Server, and one server for a special piece of software. That's a total of only 5 Windows 2008 R2 VMs, but you can see that it can handle much more.
>SAN $230: http://www.ebay.com/itm/RACKABLE-2U-SERVER-S5000PSL-2-x-INTEL-QUAD-CORE-L5420-2-5GHz-16GB-1TB-SATA-/121402377113?pt=COMP_EN_Servers&hash=item1c44254399
x2 VM Server $1200: http://www.ebay.com/itm/Dell-PowerEdge-C1100-CS24-TY-1U-2x-XEON-QC-L5520-2-26GHz-4xTRAYS-72GB-DDR3-/261355969100?pt=COMP_EN_Servers&hash=item3cda079a4c
SSD $75: http://www.amazon.com/Crucial-MX100-adapter-Internal-CT128MX100SSD1/dp/B00KFAGD88/
x2 Boot Drives $206: http://www.amazon.com/Seagate-Desktop-3-5-Inch-Internal-ST3000DM001/dp/B005T3GRLY/
x2 Storage Drives $280: http://www.amazon.com/Seagate-Desktop-ST4000DM000-3-5-Inch-Internal/dp/B00B99JU4S/
x3 Batteries $300: http://www.amazon.com/CyberPower-CP1000AVRLCD-Intelligent-1000VA-Mini-Tower/dp/B000QZ3UG0/
Shelf $31: http://www.amazon.com/Odyssey-ARS2-Space-Shelf-Accessory/dp/B0002DV0GI/
Server Rack $281: http://www.amazon.com/Tripp-Lite-SR4POST25-Cabinet-Capacity/dp/B004OB8T72/
Microsoft Server 2008 R2 $695: http://www.amazon.com/Microsoft-Windows-Server-Standard-Packaging/dp/B00H09CF70/
x2 Microsoft Server CALs $298: http://www.amazon.com/Microsoft-Windows-Server-2012-OEM/dp/B0093CBTOM/
Switch $66: http://www.ebay.com/itm/DELL-POWERCONNECT-2716-USED-/251627465136?pt=US_Network_Switches&hash=item3a962a69b0
Firewall $90: http://www.amazon.com/EdgeRouter-ERLite-3-512MB-Ethernet-Router/dp/B00CPRVF5K/
Rack Screws $27: http://www.amazon.com/Tripp-Lite-SRCAGENUTS-Enclosure-Hardware/dp/B001DW8J5C/
Drive Converter $15: http://www.amazon.com/Icy-Dock-EZConvert-2-5-Inch-Converter/dp/B002Z2QDNE/
That is the full setup from the rack down to the software licenses that runs 144GB RAM and 4TB usable drive space on ZFS with a 128GB SSD Read cache. It falls short of $4k. We use XenServer and OpenIndiana.
That's only two VM servers, but every VM the client needs can easily run on one in case of a failure. Just thought I would share this setup to show that it is feasible to price a VM cluster out at under 6k. This is not the cheapest build I've done, but definitely near it and much smaller than I would recommend for most people. It is actually smaller than I recommended for this client, but it is what it is.
I have this rack and can confirm it is very heavy duty.
https://www.amazon.com/Tripp-Lite-Equipment-Capacity-SR4POST25/dp/B004OB8T72
I also picked up the casters for this, a PDU, and a shelf or two.
Rails mount to the side of the server and fit into those slots. Most of your installation time will be spent on getting the rails setup but mostly due to a bit of a learning curve. All of my servers came with rails but you will need one rated for a 4U and weight load.
If you're on 120v, you should consider running your servers off 240.
Here is the mobile version of your link