The Archil blog
Engineering deep-dives, launches, and essays on agents and storage from the team building Archil.
- Engineering
Beating NVMe by extending POSIX
I know that we’ve been talking a lot about agents over the past few weeks, but I wanted to take some time to talk about some of the deep engineering work that Archil is doing to support our largest customers, analytics platforms...
Hunter Leath
- Announcement
Introducing Persistent Sandboxes
Archil introduces traditional, forkable sandboxes with persistent disk and ability to host network services.
Hunter Leath
- Engineering
Building the last WAL on S3
Every cloud workload -- databases, sandboxes, CI, analytics -- is built from the same three parts. Why a single write-ahead log on S3, speaking POSIX, can collapse all of them into one storage system.
Hunter Leath
- Engineering
How to store data safely
Archil is one of the few storage services that actually stores customer data rather than delegating it to S3. Durability math, correlated failure, erasure coding, and copysets -- what it takes to not lose your data.
Hunter Leath
- Engineering
Understanding file storage
Block devices, file systems, and why remote file storage has always been slow. A ground-up look at what a file system actually is, and how Archil makes a shared one fast enough to run git clone on.
Hunter Leath
- Announcement
Context that agents understand
New Archil integrations for the Vercel AI SDK, eve, Mastra, and LangChain. One function exposes a persistent, shared, compute-enabled filesystem to your agents.
Sachin Raja
- Engineering
Be careful which "persistent" disks you trust
Not all "persistent disks" are created equal. What it actually means for data to be safe, what your infrastructure provider could be doing behind an fsync, and the question you should be asking before you trust them with a database.
Hunter Leath
- Agents
Agents were built for the $5 VPS
Serverless is the 'MCP' of the hosting world. Just like we moved from MCP to file systems, the industry will move from serverless platforms back to the virtual server as the de-facto hosting strategy in the agent era. Here's why.
Hunter Leath
- Agents
Where are the serverless sandboxes?
Yesterday, @ankrgyl, the CEO of Braintrust, remarked that it felt like sandboxes were the convergence of servers and serverless. He should be correct here, it is the case that sandboxes kind of feel...
Hunter Leath
- Engineering
Launching a million sandboxes per second in constant time
They say that in the future, everyone will have their own sandbox company for 15 minutes. Let's make that simpler, here's exactly how I built our compute platform to handle millions of sandbox...
Hunter Leath
- Engineering
Are Archil's sandboxes as free as Cloudflare egress?
One thing that customers are most surprised by when they move to Archil is that their sandbox costs usually go to $0 by moving to Serverless execution. This is great for them, but also a little...
Hunter Leath
- Agents
The file system is the agent
A few weeks ago, we spoke about how the file system is the most important state management primitive of the AI era. As a result, the file system needs to evolve for this new reality. The first way...
Hunter Leath
- Agents
Who will build Vercel for agents?
This isn't surprising to you, but I believe there's a reason why none of the 'vercel for agents' companies have won yet: none of these technologies have innovated in how to manage stateful...
Hunter Leath
- Engineering
Building file system transactions for agents
There are a lot of reasons why object storage solutions like S3 became so popular for cloud application development in the past 20 years with 'low-cost' and 'ubiquity' being two. I think there's a...
Hunter Leath
- Engineering
Should storage be local or remote?
When I started Archil in 2024, I was coming from a world of networked, disaggregated storage products. My primary goal was to build a system for file storage (which has super powers like...
Hunter Leath
- Engineering
Is S3 faster than a file system?
One of the most interesting things that used to happen to me when I was working at AWS was hearing from customers who told me that they 'preferred to use S3 because it was faster than EFS'. This was...
Hunter Leath
- Announcement
Archil raises $11M to connect AI to data
We've raised an $11M Series A to connect AI to data — a persistent file system for agent context, with the compute to work on it built in.
Hunter Leath
- Agents
Agents share environments, not data
Agents today mirror the software development world of the late 2000s before the secrets from Google, Amazon, and Facebook on scaling engineering teams and services became common knowledge. Today,...
Hunter Leath
- Announcement
Bash is the SQL for file systems
Introducing serverless execution: run bash on Archil file systems directly, without provisioning compute or moving data. Live today in all public AWS regions, and in BYOC deployments on any cloud.
Hunter Leath
- Agents
The file system is the sandbox
Let's start by thinking about the Ship of Theseus, which asks the question 'if you replace every plank in a ship, at what point does it become a different ship?'. This is kind of hard to answer, but...
Hunter Leath
- Engineering
S3 Files: the right product on the wrong foundation
AWS S3 Files lets you mount an S3 bucket as a file system. The idea is right. But building it on NFS creates a cascade of problems — in latency, scalability, and pricing — that no amount of engineering can fix.
Hunter Leath
- Announcement
Archil now supports mounting from just-bash
Archil now supports just-bash, a new way to interact with your data.
Hunter Leath
- Agents
Why file systems are here to stay
The industry has discovered that the file system is a surprisingly effective interface to give AI access to data. Here's why file systems are becoming the universal context layer for AI agents.
Hunter Leath
- Announcement
Archil: from a file system to a data company
Archil (formerly Regatta Storage) has raised $6.7M to replace legacy cloud storage like EBS with infinite, shareable volumes that instantly connect to S3.
Hunter Leath
- Announcement
Introducing Archil
Regatta Storage has rebranded as Archil, reflecting our expanded focus beyond storage to comprehensive data management.
Hunter Leath
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