Avadhoot Gadgil, Specialist in resilient, petabyte-scale cloud environments, delivering infrastructure innovation across North America, Australia and Europe
Enterprise storage has a predictable failure mode: the infrastructure that’s supposed to support growth becomes the thing that blocks it. Scheduled maintenance windows, disruptive upgrade cycles, unpredictable capacity costs, and the operational overhead of managing spinning disk at scale — these are the friction points that consume engineering time and delay the work that actually matters.
Pure Storage addresses this at the architecture level. Rather than patching the limitations of mechanical storage with better management software, Pure Storage replaces the underlying model entirely — delivering all-flash performance, a consumption-based subscription, and an SLA that contractually eliminates scheduled downtime for upgrades and maintenance. Evergreen//One includes a 99.9999% uptime guarantee, no scheduled downtime for upgrades or maintenance, and a 25% storage capacity buffer relative to usage — commitments that traditional HDD-based infrastructure cannot match structurally.
ThinkOn delivers Pure Storage Evergreen//One as a managed service, giving enterprise IT teams and channel partners access to petabyte-scale all-flash infrastructure without the capital outlay or operational overhead of owning and maintaining it directly.
Glossary
Pure Storage: An enterprise all-flash storage platform designed to replace mechanical hard drive arrays with flash-based storage delivering consistent low latency, high throughput, and non-disruptive operations.
Evergreen//One: Pure Storage’s storage-as-a-service (STaaS) subscription model. Evergreen//One unifies on-premises and cloud storage resources into a single data storage subscription, with guaranteed SLAs covering uptime, performance, and capacity.
All-flash array (AFA): A storage system that uses flash memory exclusively — with no spinning hard drives. Delivers consistent sub-millisecond latency regardless of workload.
NVMe (Non-Volatile Memory Express): A storage protocol designed for flash memory that eliminates the queue depth limitations of legacy interfaces. Pure Storage’s FlashArray is fully NVMe, delivering latency as low as 150 microseconds for demanding workloads.
Non-disruptive upgrade: A storage upgrade — controller swap, capacity expansion, or software update — that occurs with zero interruption to production workloads. No maintenance window required.
TCO (Total Cost of Ownership): The full cost of owning and operating a storage system over its lifecycle, including hardware, power and cooling, rack space, and administrative overhead.
SafeMode snapshots: Pure Storage’s ransomware protection feature — immutable backup snapshots that cannot be deleted by attackers even with full administrative credentials.
STaaS (Storage as a Service): A consumption model in which storage infrastructure is delivered as a subscription rather than a capital purchase, with capacity scaling on demand.
The main advantages of Pure Storage’s flash storage compared to traditional hard drives
Pure Storage flash storage eliminates the mechanical latency ceiling of spinning disk — delivering consistent sub-millisecond response times, higher throughput, and non-disruptive operations that hard drives cannot achieve regardless of configuration.
Traditional hard drives (HDD) are bound by the physical laws of mechanical engineering—spinning platters and moving seek heads. This creates a hard performance ceiling where latency spikes and “noisy neighbor” issues are inevitable as you scale. Pure Storage removes these physical constraints, replacing mechanical lag with consistent, predictable electronic speed. This enables instantaneous data access—a critical factor for high-throughput workloads—and allows for massive consolidation of heavy workloads without the risk of performance degradation.
Beyond raw performance, flash changes the operational model. Non-disruptive upgrades, capacity expansions during peak hours, and controller swaps with zero downtime are structurally possible with all-flash systems. ThinkOn’s own production deployment demonstrated this: a full controller swap completed during live production with zero pings lost and zero impact to end users.
What is Pure Storage Evergreen//One and how does it work?
Evergreen//One is a storage-as-a-service platform delivering guaranteed SLAs for performance and availability, 15-minute support response times, and continuous infrastructure improvements — all without disruption to business operations.
The traditional storage model requires IT teams to buy ahead of capacity needs, manage upgrade cycles, and plan maintenance windows around workload requirements. Evergreen//One inverts this: capacity scales on demand, upgrades happen without downtime, and the SLA contractually commits to availability targets that eliminate the planning overhead of legacy refresh cycles.
The Evergreen//One SLA includes five commitments: no scheduled downtime for upgrades or maintenance, a 99.9999% uptime guarantee, a 25% storage capacity buffer relative to usage, guaranteed performance aligned with the service tier, and energy efficiency measured in Watts per TiB.
For enterprise IT teams, infrastructure costs move from unpredictable capital expenditure to a predictable monthly subscription aligned to actual usage. ThinkOn’s deployment moved from hardware delivery to full production readiness in under five days — bypassing the months-long procurement and provisioning cycles that traditional CapEx storage requires.
How does Pure Storage handle upgrades and maintenance without downtime?
Pure Storage delivers all controller upgrades, capacity expansions, and software updates non-disruptively — with zero maintenance windows and zero interruption to production workloads.
Most enterprise storage platforms require planned downtime for controller upgrades: the workload is quiesced, the hardware is swapped, the system comes back online. This means maintenance windows, application team coordination, and risk management overhead that consumes significant engineering time.
Pure Storage’s non-disruptive architecture works differently. Controller swaps, capacity additions, and Purity OS updates all occur while workloads run. ThinkOn demonstrated this in production: a full controller swap was completed with zero pings lost — applications continued running without interruption. Customers running Evergreen//Forever have reported 100% uptime since 2015 across multiple non-disruptive upgrades.
For IT teams planning a storage refresh, the non-disruptive model changes the migration calculus. There is no extended maintenance window to plan around. Capacity can be added during business hours. The risk profile of infrastructure upgrades drops substantially.
Does Pure Storage protect against ransomware?
Pure Storage’s SafeMode snapshots are immutable copies that cannot be deleted or encrypted by ransomware — even with full administrative credentials — providing a protected recovery point that operates independently of application-layer backup controls.
Ransomware attacks increasingly target storage infrastructure before triggering encryption — compromising backup repositories and deleting snapshots to prevent recovery. SafeMode snapshots are protected at the storage layer: an attacker with full administrative credentials to the storage system cannot delete SafeMode snapshots during the protected retention period. Deletion requires a separate out-of-band authentication step that a network-based attacker cannot complete.
For IT teams running Commvault through ThinkOn, SafeMode provides a second layer of ransomware protection beneath the application-level immutability that Commvault delivers — protecting backup data at the storage layer independently of the backup application’s own access controls.
How does Pure Storage TCO compare to traditional HDD-based storage?
All-flash TCO is typically lower than HDD over a three-to-five-year horizon once power, cooling, rack space, and administrative overhead are included — despite higher upfront per-GB cost.
Power and cooling. All-flash arrays consume significantly less power per terabyte of usable capacity than equivalent-capacity HDD arrays. Inline deduplication and compression multiplies usable capacity, reducing the physical footprint and the power required to run and cool it.
Administrative overhead. HDD-based storage requires performance tuning, tiering management, and capacity planning to maintain acceptable performance under load. Flash eliminates the tiering layer and reduces management overhead to monitoring rather than optimisation.
Refresh cycles. Traditional storage requires hardware refresh every three to five years — a capital event with procurement lead times, migration risk, and engineering overhead. The Evergreen//One subscription converts this into a continuous improvement cycle with no refresh event and no associated downtime.
ThinkOn’s production deployment of Pure Storage Evergreen//One achieved 24–35% lower TCO compared to the prior infrastructure model — driven primarily by elimination of manual management overhead and the shift from capital provisioning to consumption-based billing.
What workloads benefit most from Pure Storage?
Pure Storage delivers the highest relative advantage for latency-sensitive, high-throughput workloads — databases, backup and restore operations, virtualised environments, and AI/ML pipelines — where mechanical storage creates performance bottlenecks.
Database workloads. Transaction databases running on HDD are bounded by rotational latency under concurrent load. All-flash delivers consistent sub-millisecond response times regardless of query concurrency. One Pure Storage customer on Evergreen//Forever reported a 98% improvement in ERP performance after migration.
Backup and restore with Commvault. Time to restore is the metric that matters in a ransomware incident. Commvault restore throughput is directly bounded by underlying storage performance — an all-flash foundation restores significantly faster than HDD, reducing RTO in the scenarios where every hour counts.
Virtualised environments. The noisy neighbour problem — where one VM’s I/O degrades performance for co-located workloads — is a structural consequence of shared HDD storage. All-flash’s consistent latency profile eliminates this, enabling higher VM density without performance trade-offs.
AI and analytics pipelines. All Flash Array revenue grew 18.1% year-over-year in Q4 2025 (IDC), driven by demand from data-intensive workloads requiring high sequential throughput that HDD cannot sustain.
How ThinkOn delivers Pure Storage as a managed service
ThinkOn delivers Pure Storage Evergreen//One as a fully managed service — production-ready in under five days, no infrastructure to own, predictable consumption billing, and sovereign data residency for regulated industries.
No infrastructure to own or manage. ThinkOn provisions and operates the underlying Pure Storage infrastructure. IT teams access petabyte-scale all-flash performance without capital expenditure, procurement lead times, or hardware management overhead.
Production-ready in under five days. ThinkOn’s deployment process moves from hardware delivery to full production-ready status in less than five days — bypassing the months-long procurement and provisioning cycles of traditional CapEx storage.
Predictable consumption billing. No egress fees, no minimum duration charges, no capacity over-provisioning. Storage costs reflect actual usage with the Evergreen//One 25% capacity buffer included.
Sovereign data residency. Data remains within ThinkOn’s regional infrastructure with contractual residency commitments — relevant for healthcare, financial services, government, and legal organisations subject to data sovereignty requirements.
Integrated data protection. For organisations running Commvault through ThinkOn, Pure Storage provides the performance foundation for fast restore operations alongside SafeMode ransomware protection at the storage layer.
Ready to move to zero-downtime storage? Contact the ThinkOn team, review the ThinkOn + Pure Storage case study, or download the storage comparison guide.
Key statistics and sources
- 99.9999% uptimecontractual SLA — no scheduled downtime for upgrades or maintenance (Pure Storage Evergreen//One)
- 150 microsecondsminimum latency from Pure Storage NVMe FlashArray vs. 3–10ms for enterprise HDDs (Pure Storage)
- 18.1% YoYAll Flash Array revenue growth in Q4 2025 — fastest-growing segment of the enterprise storage market (IDC, April 2026)
- 24–35% lower TCOThinkOn deployment of Pure Storage Evergreen//One vs. prior infrastructure (ThinkOn + Pure Storage case study)
- Zero pings lostThinkOn live controller swap during production — zero impact to end users
- 5 daysThinkOn time from hardware delivery to full production-ready status on Evergreen//One
- Gartner LeaderPure Storage named a Leader in the 2025 Gartner Magic Quadrant for Enterprise Storage Platforms (Pure Storage)
Sources: Pure Storage Evergreen//One SLA; Pure Storage NVMe FlashArray press release; IDC Enterprise Storage Q4 2025; ThinkOn + Pure Storage case study; Gartner Magic Quadrant for Enterprise Storage Platforms 2025.