SAN Replacement: Retire the Array, Keep the Servers
Replace SAN and NAS storage with VergeFS, the storage layer built into VergeOS, on the x86 servers you already own or choose
Summary
Every four to five years, a SAN or NAS reaches the end of its support contract, its capacity limit or its compatibility list, and IT buys another array and migrates again. VergeOS ends that cycle. VergeFS, the storage layer built into VergeOS, turns the internal drives of standard x86 servers into one deduplicated, encrypted, snapshot-protected pool for block and file data. Customers have repurposed old storage nodes, avoided a $500,000 refresh, finished a refresh more than 28% under budget and retired dedicated backup arrays.
Stop buying arrays. Grow storage one server at a time.
Why the SAN Conversation Comes Up
SAN replacement projects usually start with one of three events. The support and maintenance renewal arrives with a price that looks like a new purchase. The array hits a capacity or performance wall that only a bigger controller or another shelf can fix. Or the hardware the team wants to buy next is not on the vendor’s compatibility list.
Each event leads to the same answer from a storage vendor: buy the next array and migrate the data again. Most organizations have done this more than once, and many run five or six separate storage systems for production, file shares, backup, disaster recovery and archive.
VergeOS gives IT a different answer. It is a Private Cloud OS that runs virtualization, storage, networking and data protection as one piece of software on bare metal. Its storage layer, VergeFS, replaces the SAN and the NAS with the drives inside the servers that already run the workloads.
Get Off the Storage Merry-Go-Round
A traditional SAN or NAS typically needs replacing every four to five years. Each refresh brings a new array, a new support contract and another data migration, and each migration puts weekends and risk on a small team. The cost does not stop at the purchase price. Rack space, power, cooling and specialist administration all grow with every silo.
VergeOS breaks the cycle by separating storage from any single piece of hardware. New servers join the existing system as nodes, and old servers retire when they no longer earn their place. Different vendors and CPU generations run in the same VergeOS instance, so there is never a day when all the data has to move at once.
At St. Clair County RESA, the old SolidFire design required one or two new storage nodes every year and a full refresh on a five-year lifecycle. On VergeOS, when the team needs capacity, it adds a node, with no architecture redesign and no SAN to relicense.
Storage That Runs on the Servers You Already Own
VergeFS pools the internal drives of every server into one storage layer that serves block storage to virtual machines and file services through built-in NAS. There is no external array, no storage fabric to zone and no separate storage console. Storage, compute and networking are managed from the same VergeOS interface.
That design lets organizations reuse hardware a storage vendor would retire. St. Clair County RESA installed VergeOS directly on its existing SolidFire nodes for its proof of concept, and hardware that had served only as storage became full compute and storage resources. The City of Saint Peters added memory and SSDs to its existing HPE servers in place of buying a new SAN, which avoided a planned $500,000 infrastructure refresh.
“With VergeIO, we could extend the life of our existing hardware while reducing licensing costs.”
Brian Bazzell, IT Director, City of Saint Peters
ACSG, a SilverSky company, standardized on VergeOS for the New Jersey K-12 districts it supports. At Somerdale Park, the district’s Dell SAN was nearing end of life when a VMware licensing dispute arrived. Removing the dedicated SAN and its licensing produced immediate savings.
More Usable Capacity from Every Drive
VergeFS performs global inline deduplication as data is written, across the entire system. Duplicate blocks never reach the drives, which reduces disk consumption, memory use and replication bandwidth. Snapshots share the same deduplication, so recovery points consume space only when new unique data appears.
The results at St. Clair County RESA were dramatic. On RESA’s data, VergeOS reached a 16:1 deduplication ratio, compared with the 3.7:1 the team had seen on its SolidFire arrays.
“We utilize global dedupe and compression, VergeOS VSAN is giving us a 16:1 ratio. SolidFire iSCSI was 3.7:1.”
James Marsack, Senior Network Engineer, St. Clair County RESA
VergeOS also mixes media types in one environment. Performance-sensitive data sits on flash, and less demanding data can move to lower-cost hard drives. InterBel Telephone runs all-flash production nodes alongside a hard drive node for protection, and uses ioOptimize to add drives to existing servers in place of buying more nodes.
A Storage Refresh That Comes in Under Budget
Data center inflation has pushed up the price of arrays, flash and memory, and many teams now face a refresh quote far above the budget they planned. VergeOS changes the math in three ways. It runs on hardware the customer selects, it reuses servers already in the rack, and it includes storage, protection and replication in a flat per-node license with no per-feature charges.
InterBel Telephone had to refresh end-of-life NetApp storage and Cisco UCS blades, and its VMware quote came in nearly 30% above budget. With VergeOS on Lenovo ThinkSystem servers, InterBel finished the project more than 28% under its original budget, a savings of more than 45% compared with VMware pricing.
“VergeIO is where simplicity and efficiency meet. It’s the place to call.”
Tom Rasmussen, IT Manager, InterBel Telephone
Saratoga Casino Holdings left a mandated Cisco UCS and Pure Storage stack behind, chose its own hardware through a partner refurbishment program and eliminated its storage maintenance. At St. Clair County RESA, more affordable hardware and retired backup software delivered a full return on investment in roughly two and a half years.
All-Flash Performance Without the Array
The usual concern with retiring a dedicated array is performance. Customer results say otherwise. Saratoga Casino Holdings runs replicated copies of the same database on its old all-flash array and on VergeOS, and its IT leader cannot tell them apart.
“If you blindfolded me, I wouldn’t be able to tell.”
Scott Bartgis, Corporate Director of IT, Saratoga Casino Holdings
RESA’s older SolidFire hardware running VergeOS consistently outperformed its newer VMware infrastructure during the proof of concept, and production performance improved again on new Supermicro nodes. In New Jersey, Lumberton’s previous SAN had become nearly unusable under normal load. Once workloads ran on VergeOS, response times improved and the IT staff regained confidence in the environment.
“VergeOS has become our most reliable platform for K-12. It solves the problems we see every day, host sprawl, storage failures, VMware licensing issues, and inconsistent performance.”
Justin M. Jackson, CTO, SilverSky/ACSG
Snapshots, Encryption and DR in the Storage Layer
Most SAN environments depend on a second stack for protection: backup software, a backup array and a replication target. VergeOS builds those capabilities into VergeFS. ioClone takes immutable snapshots that are independent of one another, so there are no snapshot chains to manage, and snapshots can be kept as long as policy requires. Data at rest is protected with 256-bit encryption.
Immutable snapshots give IT a fast path back from ransomware. When production data is encrypted by an attacker, administrators roll back to the last clean snapshot in place of restoring from a separate system. ioReplicate sends copies to a second site for disaster recovery, and ioGuardian keeps data available through drive, node or even multiple-node failures.
St. Clair County RESA moved from one backup per day to hourly snapshots with instant rollback, retired its separate backup software and removed a dedicated QNAP backup array that had filled half a rack. A VergeOS backup and DR cluster replaced it in less space and can host virtual machines when needed.
SAN and NAS Compared with VergeFS
| Question | SAN or NAS array | VergeOS with VergeFS |
|---|---|---|
| Refresh cycle | New array every 4 to 5 years | Add and retire nodes over time |
| Hardware choice | Vendor compatibility list | x86 servers from any vendor, mixed generations |
| Scaling | Controllers and shelves | Add a node, capacity and performance grow together |
| Block and file | Separate SAN and NAS systems | One pool with built-in NAS |
| Efficiency | Per-array deduplication, often licensed | Global inline deduplication included |
| Protection | Separate backup and replication products | ioClone, ioReplicate and ioGuardian included |
| Management | Separate storage console and fabric | One VergeOS interface for every service |
Moving off a SAN does not have to happen all at once. Customers such as Saratoga Casino Holdings stage workloads into VergeOS with production still running, then cut over each VM with a final sync that takes seconds to a few minutes. The old array retires when the last workload moves.
Plan Your Last Storage Refresh
A SAN replacement is often the moment to rethink the whole infrastructure stack. Organizations that replace storage with VergeOS also consolidate the hypervisor, networking and data protection, which is how they leave VMware, reuse hardware and fight data center inflation in one project.
Read the full stories from St. Clair County RESA, Saratoga Casino Holdings, InterBel Telephone, ACSG and New Jersey K-12 and K-12 districts and municipalities, or see how VergeOS works as a VMware alternative.
Retire the Array on Your Schedule
Talk with a VergeIO engineer about replacing your SAN or NAS with VergeFS on the servers you already own, or take VergeOS for a test drive with no hardware required.