![]() If you do backups of your VM's it shouldn't be an issue anyhow but I have never seen nor heard of write-back caching leading to data loss. It does present the possibility of data loss but it's minimal and shouldn't really matter for a test or lab server. If you don't know what write-back caching is, it significantly increases write performance for a RAID array if your controller is capable. ![]() Four 250GB SSD Drives: RAID 5 (Write-back caching enabled).The RAID configurations I went with are as follows: If you want to read more about RAID arrays I highly suggest it if you need some knowledge in the subject: When the RAID 5 is formatted you will lose a drive worth of storage due to the parity stripe. I ended up setting up the two magnetic (aka mechanical) SAS drives in a mirror (RAID 1) for redundancy, and the four 250GB Drives I put in RAID 5 with write-back caching enabled so I could obtain the high performance write speeds as well as reads. You can find the hard drive caddies for many server models on Amazon here: If you want to go with larger storage the 500GB SSD Drives I found for around 50 dollars which might make a good storage size improvement for your VM's. The SSD storage added another 150 dollars to the build but this was more than worth it for the blazing-fast SSD performance for the VM's. I found the 2.5" drive trays on Amazon in a four-pack for only $ 29 bucks. In the server there were four open slots left to install 2.5" drives so I purchased 4 cheap Kingston 250GB SSD's for $31 dollars each on Amazon. UPGRADE THE STORAGE WITH FAST SOLID STATE DRIVES: (Approx $150) 96GB RAM Total: 12x 8gb DDR3 ECC Memory.Dual Xeon X5670 CPU's, 6 Core 12 Threads each for a total of 24 Threads.Below is a link where you can do similar shopping on eBay so hopefully I can make this easy for you. Total price: 300 Dollars! Very affordable for this much machine. Apparently the cost of a server depreciates considerably after it's been used because you can pick one up on eBay for pennies on the dollar and there are tons of them available!Īfter some searching, I found a Dell R610 server with Dual Xeon 12 core CPU's for a total of 24 threads of CPU power, and it also had 96GB of memory! The Dell PERC 6 RAID controller was also included and so were two power supplies and dual 146GB SAS drives. I found that nowadays (as of February, 2019) you can find servers for cheap that actually have quite a bit of power. In the quest to find out how much used servers cost, I jumped onto eBay and I started looking around. I thought to myself, "I really need to obtain a server to use", but I figured it would be too expensive to find one that could handle my desire for so many virtual machines.įIND THE SERVER OF YOUR DREAMS FOR AROUND $300 DOLLARS Then I started wanting to put other servers on there, Windows 2016, CentOS for GrayLog, another for my Chef server, and I found out I was out of system resources. Then I loaded vCenter appliance and I noticed it was already consuming 20GB of memory. I loaded ESXi 6.5 on it, and at first it was good. When I decided to begin experimenting with VMWare virtualization in my own lab I used an Intel i5 7600 CPU and 32GB of memory which at the time I thought was sufficient. Have you tried experimenting with ESXi but you want the power to run more VM's? I had the same problem.
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