Become a TechRadar Insider
Sponsored by
What is a Ram-Only VPN server?
It’s well-known that a VPN server lets users hide their digital identity. Yet the less tech-savvy among us might draw a blank when seeing the phrase 'RAM-only servers' as they scroll through some VPN companies’ privacy-enhancing features.
We’ve seen some of the best VPNs jump from hard disk drive (HDD) servers to 100% RAM-only architecture over the years. It’s seen as evidence of their ongoing commitment to user-privacy, though there are popular industry outliers who insist that HDD server networks provide comparable security benefits.
Want to know exactly what a RAM-only server is? And if you could benefit from using one? You’ll find all the answers below.
What is a VPN server and what does it do?
In essence, a VPN server is a remote computer that hosts a company’s software so it can deliver its services to VPN users.
Premium VPNs offer access to thousands of servers around the globe. While some are optimized for particular VPN use cases, most support a range of activities like unblocking global streaming content while simultaneously keeping you safe from all kinds of online threats.
When you connect to a server using your VPN client, a secure tunnel is created. Data routed along it is encrypted using VPN protocols, which means third parties can’t read or intercept your web traffic.
On arrival, the VPN server decrypts your data and forwards it to your intended destination, masking your IP address and real-world location in the process. The web domain’s response is then rendered as ciphertext as it returns to be decrypted by the VPN on your device.
What is a Ram-Only server and how do they work?
Traditionally, VPN companies relied on HDD servers. These offer a permanent form of memory that retain a VPN’s operating system, alongside other apps and files, even once they’ve been turned off. Unless manually deleted, they’re stuck indefinitely on disk.
RAM-only servers, however, load all of its operational data into RAM (Random Access Memory), which is volatile and requires continual power for information to persist. When a server is turned off or disconnected, its entire contents are wiped clean, including any user data, rendering it a blank slate until it's rebooted and subsequently uploads a new copy of the OS.
This significantly reduces the risk of your data remaining indefinitely on RAM-operated infrastructure.
It’s the technical complement to a company’s no-logs policy, which outlines its privacy claims that it won't store connection logs or details linking you to your online activity. RAM enforces this at a server level, meaning that if RAM hardware was seized, it wouldn't jeopardize your privacy.
It’s one of the main reasons diskless servers have become the industry standard in recent years. Express VPN was one of the first to transition, while IPVanish is working to become 100% RAM-only by 2027, a move it claims will eliminate “even the theoretical risk of data persistence.”
What are the benefits of Ram-Only servers?
- Data retention is practically impossible: the volatile nature of RAM means that every connection log, file, or trace of information evaporates when a RAM server is powered down.
- They enforce a VPN’s 'no-logs' claims: a RAM-only approach aids VPNs in delivering their privacy claims at a server level. As long as RAM servers are regularly rebooted, no permanent record can exist of your browsing history, website visits, or connection logs.
- RAM servers are safer from physical seizure: Unlike HDDs, which write your data to physical disk, the moment a RAM server is disconnected its contents are permanently expunged, so the risk of your data falling into the wrong hands is reduced substantially.
- They help prevent hackers from stealing your data: when a RAM server reboots, it downloads a brand new copy of all system files. That effectively purges it of any malicious code inserted by hackers to gain covert access to things like your confidential data and encryption keys.
- Superior speed and performance: RAM-Only servers process data more efficiently than their HDD counterparts. That means speedy access to VPN servers as well as facilitating low latency connections, which should result in less ping when gaming and a smoother online experience overall.
Are there any cons to using RAM-Only servers?
RAM servers are more costly to operate than hard drives and more time-consuming to reboot. However, neither of these things appears to have a demonstrable impact on the end user.
They’re also not inherently superior to using HDDs that are full-disk encrypted, which protects content with virtually unbreakable AES-256 encryption. Both approaches are effective deterrents to data exposure when their servers are powered down, but equally, they’re both vulnerable to illicit access while they’re up and running.
Do I really need a VPN provider that offers Ram-Only servers?
RAM technology delivers greater speeds and processing power than its HDD counterpart, yet RAM-Only servers aren’t the privacy panacea their reputation suggests.
There are equally consequential VPN features you should investigate if you’re serious about keeping your digital activity under wraps. A service boasting an audited no-logs policy that an independent body has confirmed isn’t harvesting your data, for example.
If your VPN comes with those assurances, then a HDD server fleet (with full-disk encryption) should grant the privacy guarantees necessary for the average Joe to feel confident their digital footprint is secure.
But for journalists, activists, or anyone navigating internet censorship under totalitarian regimes, for that matter, RAM-only servers provide the peace of mind that comes from knowing a seized server shouldn't betray their VPN usage.
