3-year cost calculator
Pre-filled for IBM FlashSystem → Pure Storage FlashArray. Adjust every figure with your own numbers.
Every figure here is an illustrative estimate, not a vendor quote. Defaults are editable starting points compiled from public information; real, binding pricing comes from the vendor or an authorized distributor. See our methodology.
Recommended for your requirements: Size for 500 TB usable at ~50k IOPS — midrange (100–500 TB). Plan redundancy (N+1), replication/DR, and snapshot capacity overhead (~20–30%).
All figures are illustrative and fully editable — adjust the cost-per-TB and migration inputs with your own numbers. Not guaranteed vendor pricing (defaults reviewed May 2026). For a binding quote, use the request form below to reach an authorized distributor or partner.
Quick comparison: IBM FlashSystem vs Pure Storage FlashArray
Common trade-offs teams weigh when staying on IBM FlashSystem versus moving to Pure Storage FlashArray. These are general, commonly-reported considerations — not statements of fact about any vendor — so check them against your own contract and the vendors' current terms.
- Already in production — no migration effort or risk
- Mature ecosystem with vendor support and SLAs
- Premium array plus capacity licensing
- Maintenance contract costs
- Proprietary platform lock-in
- Ongoing capacity + support cost to budget for
- Higher vendor lock-in to weigh
- Commercial option with vendor support and SLAs
- Cost model: Evergreen subscription
- Requires a migration (~18 weeks, high effort)
- Evergreen subscription cost
- Higher operational learning curve
Why teams evaluate alternatives to IBM FlashSystem
Reasons commonly cited by users and in public industry coverage for re-evaluating IBM FlashSystem. These are general, reported considerations — not statements of fact about IBM — and may not reflect your situation or the vendor's current terms. Verify against your own contract before deciding.
- Premium array plus capacity licensing
- Maintenance contract costs
- Proprietary platform lock-in
The migration plan
Roughly 18 weeks for a mid-size estate, in six phases.
Tooling & automation
Provision the new storage pools, migrate data with host-level copy or replication, re-present LUNs/shares, and validate before cutover.
OffVendor's wizard pre-fills these scripts with your environment — inventory export, disk/schema conversion, bulk provisioning, and validation.
Frequently asked
Is migrating from IBM FlashSystem to Pure Storage FlashArray worth it?
For most teams facing rising IBM FlashSystem costs, yes — Pure Storage FlashArray (evergreen subscription) typically lowers 3-year total cost of ownership, though the right answer depends on workload complexity and in-house skills. Use the calculator to model your own numbers.
How long does a IBM FlashSystem to Pure Storage FlashArray migration take?
A typical mid-size estimate is around 18 weeks across six phases — discovery, design, pilot, waved production migration, validation, and decommission. Larger or more complex estates take longer.
What tools are used to migrate from IBM FlashSystem to Pure Storage FlashArray?
Provision the new storage pools, migrate data with host-level copy or replication, re-present LUNs/shares, and validate before cutover.