What are the main disadvantages and risks of using Solana?

Solana's biggest risks are validator and stake centralization, a history of multi-hour mainnet outages, and hardware costs high enough to price out smaller node operators. Solana's Nakamoto coefficient, a measure of how many entities would need to collude to disrupt the network, sat around 20 in mid-2025, down from 31 in March 2023, as the active validator count fell from roughly 2,500 to around 800 over the same period.

What does validator centralization mean in practice?

Running a competitive Solana validator now calls for a 24-core-plus CPU, 384GB or more of RAM, and enterprise NVMe storage, plus enough staked SOL to cover annual voting costs that can run into the tens of thousands of dollars. Those costs have pushed smaller, independent operators out and concentrated stake among fewer large staking providers. For a project choosing where to deploy, this matters because a network with fewer validators has fewer independent parties who would need to collude to censor transactions or sway consensus, a tradeoff Solana has accepted in exchange for the throughput and low fees its architecture is built around.

How often has Solana's network actually gone down?

Solana has had several mainnet halts that needed validator operators to coordinate a manual restart: an outage lasting around 18 hours in September 2022 tied to a consensus bug, a February 2023 outage after a validator broadcast an oversized block that overwhelmed the network's block-propagation layer, and a roughly five-hour halt in February 2024 caused by a bug in transaction processing. There has been no full network halt since that February 2024 incident, so reliability has improved, but the history still matters for anything with real-time settlement needs, since a chain that has previously stopped producing blocks needs a fallback plan.

Where do these risks matter most in practice?

They matter most for applications that cannot tolerate a stalled chain even briefly, such as liquidations, derivatives settlement, or payment rails, and for teams comparing Solana against Ethereum, where a larger and more geographically spread validator set is usually cited as the more conservative choice for decentralization-sensitive work. Solana's tooling and library ecosystem is growing quickly but is still smaller than Ethereum's, so teams often find fewer audited reference implementations for niche use cases.

Anyone building on Solana today is trading some decentralization and a real, if improving, outage history for speed and low fees, not a hypothetical tradeoff.

Updated: July 27, 2026