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Storage System
Plan storage around the controller platform
HPE StoreOnce 3520. Storage System. Ask for current pricing and help choosing the right configuration.
Tell us the configuration, quantity and destination. Your quotation will show availability, condition, warranty and delivery terms.
Start an order requestHPE / PRODUCT DETAILS
Keep the supplied controller platform intact. Plan capacity, host connectivity and data services around qualified original options.
Tell us which system or service this product is for. We do not have details for this section yet.
Match host ports, multipathing and the supported protocol.
Tell us which system or service this product is for. We do not have details for this section yet.
These specifications describe the storage platform. Server CPU and DIMM options are handled separately.
Specify qualified drives, firmware, carriers and supported expansion enclosures.
Tell us which system or service this product is for. We do not have details for this section yet.
Confirm data-service entitlements and the protection design.
Match host ports, multipathing and the supported protocol.
View all specifications →HPE / ORDER & INSTALLATION DETAILS
Keep the system SKU, option P/N and spare P/N distinct.
Check the chassis generation and original HPE installation kits.
Separate factory hardware, optional management software and support.
Technical overview
Use the full part number when comparing options or asking about system fit.
| Product series | StoreOnce 3520 |
|---|---|
| Real HPE enterprise storage model | StoreOnce 3520 |
| Manufacturer | HPE |
| Model | StoreOnce 3520 |
| Manufacturer P/N | StoreOnce 3520 |
| Model / P/N | HPE StoreOnce 3520 |
| Product family | HPE Storage System |
| Product reference | Manufacturer documentation is confirmed during RFQ review when a public datasheet is not attached. |
| Category | Storage System |
HOW THIS PRODUCT FITS YOUR SYSTEM
Choose how you plan to use this product.
Match host ports, multipathing and the supported protocol.
These specifications describe the storage platform. Server CPU and DIMM options are handled separately.
Use this checklist to describe the change. The host system and full configuration determine which parts will fit.
YOUR QUOTE REQUEST
Add the quantity, options and installation details you want us to quote.
Confirm the exact manufacturer part number, host compatibility and included components. Optional software is quoted separately only when requested.
SUPPORT & REPLACEMENT
Check support dates, replacement options and whether continued use still makes sense.
We do not have confirmed sales and support dates for this part number.
Send us the full StoreOnce 3520 order code, software release and support details before planning long-term use.
Ask us to check the current sales and support statusProducts with similar names or connectors may still be incompatible. Compare the full specifications, installed system and software requirements.
Compare related products These products may be related, but we have not confirmed them as replacements.USING HARDWARE RESPONSIBLY
Consider repairability, remaining support and actual operating demand. Extending service life is useful only when the equipment still meets your security and reliability requirements.
Use measured average input power for the same workload. PSU ratings and processor TDP are different from total system power.
Energy difference = (current W − proposed W) × hours × units ÷ 1,000. Excludes cooling, embodied emissions and purchase costs.CONNECTION DETAILS
The storage system uses its factory-supplied controllers. The ordered host interface determines whether the system connects through Ethernet, Fibre Channel or direct SAS.
Browse the categories above for related equipment, then send us the full configuration so we can check the fit.
PRODUCT DETAILS
Resilient data path
Backup clients or media servers write through supported data interfaces into a purpose-built backup store. Management, data and replication networks are separated in the design.
Availability depends on the exact appliance model, configured storage, upstream backup software and recovery design. Replication is not a substitute for tested restore procedures.
Platform and software
Alletra and MSA are separated by GreenLake or local management, controller generation, support term and software entitlement; Nimble, StoreOnce and StoreEasy are not mixed into an Alletra BOM.
Alletra quotations specify the controller pair or disaggregated MP role, shelf type, media pack, NVMe or SAS architecture and supported expansion paths.
Snapshots, Peer Persistence, replication, StoreOnce Catalyst or StoreEasy file services are named as separate entitlements and acceptance tests.
System Architecture
Physical configuration
Capacity expansion uses only appliance-approved shelves, drive packs and cabling. Deduplication sizing is based on protected data, change rate, retention and backup method.
Availability, speed, port count, optics and adapter type must be confirmed for the exact controller and software release.
The final BOM includes only manufacturer-qualified media for the model, enclosure and software release.
Capacity Planning
Sum of installed media before parity, sparing, metadata, formatting and system reserves.
Capacity available after the selected protection layout and mandatory system overhead.
A workload-dependent planning value that may include compression, deduplication or thin provisioning.
Usable backup capacity follows physical protection and reserves. Logical or effective capacity also depends on deduplication, compression, retention and daily change rate and must not be treated as guaranteed raw capacity.
Software platform
HPE StoreOnce software, Catalyst functions and backup-application integrations
Capacity, Catalyst, encryption, replication and support options depend on the selected model and software release
Backup retention and StoreOnce replication are sized from recovery objectives, not array snapshot assumptions
Encryption, secure erase, immutability integration, RBAC and isolated recovery paths are reviewed
Quotation Structure
Controller count, node role, mirrored cache or NVRAM behavior, management plane and failover mode are confirmed before pricing.
Ingest cache, deduplication metadata and catalog protection are sized from change rate, retention and restore targets.Base enclosure, shelves, drive packs, rails, power, shelf I/O modules and cables stay visible as separate order lines.
Capacity expansion uses only appliance-approved shelves, drive packs and cabling. Deduplication sizing is based on protected data, change rate, retention and backup method.FC, iSCSI, NVMe-oF, NFS, SMB or S3 access is validated with host software, optics, adapters and the exact storage release.
HPE StoreOnce Catalyst, Virtual tape where supported, NAS backup access where supported, Replication networkSnapshots, replication, encryption, ransomware protection, capacity metrics, software term and service SLA are priced as named entitlements.
Capacity, Catalyst, encryption, replication and support options depend on the selected model and software releaseThe quotation lists raw, usable and effective capacity separately and allows for growth, spare capacity and rebuild overhead.
Usable backup capacity follows physical protection and reserves. Logical or effective capacity also depends on deduplication, compression, retention and daily change rate and must not be treated as guaranteed raw capacity.Expansion Planning
Backup clients or media servers write through supported data interfaces into a purpose-built backup store. Management, data and replication networks are separated in the design.
Capacity expansion uses only appliance-approved shelves, drive packs and cabling. Deduplication sizing is based on protected data, change rate, retention and backup method.
Base capacity / Capacity expansion / Restore-performance review
Catalyst / Virtual tape / NAS backup
Capacity, Catalyst, encryption, replication and support options depend on the selected model and software release
Confirm serial coverage, SLA, install service and renewal owner
Deployment Scenarios
Separated ingest, replication and management networks with immutable copies and documented restore drills.
Media-server or client ingest sized by change rate, dedupe metadata, retention and replication target.
Smaller protected site with capacity headroom, support process and remote monitoring.
Attachable parts
Controller canisters, node FRUs, cache protection, NVRAM/boot media and management modules by exact machine type.
Expansion shelves, I/O modules, rails, power supplies, inter-shelf cables and rack kits matched to the platform.
SSD, NVMe, SAS HDD, SED/FIPS media, carriers and blank fillers approved for the enclosure and release.
FC HBAs, Ethernet adapters, optics, DAC/AOC, FC cables, host multipath software and switch-port plan.
Capacity, Catalyst, encryption, replication and support options depend on the selected model and software release
Backup retention and StoreOnce replication are sized from recovery objectives, not array snapshot assumptions
Ownership after delivery
Confirm the workload, topology, rack, power, network, recovery objectives and acceptance criteria.
Confirm the supplied system and match supported shelves, drives, ports, licenses, cables and service lines.
Own monitoring, alerts, code levels, capacity headroom, restore tests, cases and renewals.
Track lifecycle notices, support dates, non-disruptive paths, migration and secure retirement.
Installation and Acceptance
Match the delivered chassis, controllers, shelves, drives and serial-number details to the approved BOM.
Verify rack position, load, rail fit, service clearance, airflow, A/B power and grounding.
Validate every host, cluster, management, back-end and replication cable against the port map.
Confirm firmware, storage OS, licenses, subscriptions, support coverage and the approved upgrade path.
Test multipath behavior and the documented controller, node, link and power failure scenarios.
Create pools or protection domains with the approved parity, sparing, reserve and rebuild policy.
Present test volumes, shares or buckets and verify host alignment, permissions and performance baseline.
Create and restore local copies, then execute the approved remote-recovery or retention test.
Confirm monitoring, call-home, alerts, audit export, time settings, user access, encryption and key ownership.
Installation diagrams, exported configuration, licenses, credential process, test results and renewal contacts.
Compatibility and BOM checks
HPE / order paths
| Option P/N | Requested upgrade or option-kit identity |
|---|---|
| Spare P/N | Service-replacement identifier from the installed item |
| System SKU | Base or configured system to which the requirement belongs |
Storage-array planning
| Decision | Information to provide | Impact on selection |
|---|---|---|
| Host access | Host operating systems, protocols and existing storage network | Determines the interface and multipathing documentation to check. |
| Capacity and workload | Required usable space, workload pattern and protection policy | Guides media selection and sizing; raw drive capacity is not usable array capacity. |
| What the system includes | Controllers, chassis, expansion shelves, drives and storage software | Clarifies whether the order is an assembly, base system or populated array. |
Model selection & order planning
HPE StoreOnce 3520
Explore more products below. Please confirm compatibility before selecting a replacement.
Before you request a quote
Include the full model, manufacturer P/N, revision and quantity.
Tell us the host model, generation, installed configuration and required supporting hardware.
Specify condition, testing requirements, destination and requested delivery date.
