Specialized SAN Array Brand Engineering

Enterprise Storage Area Networks (SAN) rely on highly customized, brand-specific operating systems and proprietary file layout designs. When a SAN controller crashes or multiple disks drop offline, standard block recovery methods cannot read the underlying data volumes.

At Revolutionary Technology, our CFOT-Certified engineers possess deep architectural expertise in the custom configurations, specialized metadata stripes, and proprietary software interfaces used by the world’s leading SAN manufacturers.

┌────────────────────────────────────────────────────────┐
│             MANUFACTURER RECOVERY PROFILES             │
├────────────────────────────────────────────────────────┤
│ • DELL POWERSTORE / COMPELLENT                         │
│   ──► FluidFS Block Translation & Dynamic Tiering Maps │
│ • HPE MSA / NIMBLE                                     │
│   ──► CASL Log-Structured Layout & LeftHand Metadata   │
│ • NETAPP FAS / AFF                                     │
│   ──► WAFL Inode Parsing & RAID-DP Dual Parity Fixes   │
└────────────────────────────────────────────────────────┘

Dell's high-end storage systems use advanced storage virtualization methods that continually move data blocks between different tiers of physical media.

• Architectural Features: Compellent systems operate on the proprietary FluidFS clustered filesystem, which abstracts data into virtual pages. PowerStore systems deploy a modern, containerized OS optimized for end-to-end NVMe performance.
• Critical Failure Scenarios: Storage pool exhaustion leading to unmountable thin-provisioned LUNs, corrupted page translation tables, failed dual-controller handoffs, or write-history sync errors during snapshot rollbacks.
• Our Recovery Approach: We use specialized tools to map out Dell's page allocation tables directly from the raw disks. This lets us locate scattered storage blocks and piece them back together into clean, logical volumes without needing the original controller hardware.

HPE systems balance raw speed with deep diagnostic tracking, but multi-drive failures or data corruption can still knock the entire storage pool offline.

• Architectural Features: HPE MSA systems utilize traditional hardware-based RAID configurations with optimized metadata sectors. Nimble arrays operate on the CASL (Cache Accelerated Sequential Layout) file system, which compresses and sequences incoming writes to a specialized log structure.
• Critical Failure Scenarios: Corrupted CASL log indexes, simultaneous solid-state cache and mechanical drive failures, or lost configuration metadata on HPE MSA linear storage pools.
• Our Recovery Approach: We extract data from individual drives and reconstruct the unique CASL file layouts or MSA metadata stripes manually. For Nimble arrays, our engineers bypass the failed OS layer to locate and rebuild the sequential log indexes, allowing us to safely extract the embedded virtual machine containers.

NetApp Fabric-Attached Storage (FAS) and All-Flash FAS (AFF) systems are engineered for large-scale enterprise deployments, utilizing highly specialized data protection schemes.

• Architectural Features: NetApp platforms run on ONTAP software and store data using the WAFL (Write Anywhere File Layout) file system. They protect data with RAID-DP (dual-parity) or RAID-TEC (triple-parity) layouts.
• Critical Failure Scenarios: WAFL metadata root inode corruption, cascading drive failures that exceed triple-parity limits, or broken aggregation layers that prevent the storage system from mounting its volumes.
• Our Recovery Approach: Our engineers analyze the raw WAFL file structure to find historical root inodes stored across the disk array. By manually rebuilding these tracking points, we trace data blocks through the entire volume layout, restoring missing files and folders directly from raw sectors.

Because our engineering team holds active Certified Fiber Optic Technician (CFOT) certifications, we don't just look at the hard drives—we inspect the entire connectivity path:

• SFP+ / QSFP+ Diagnostics: We check for optical attenuation drop-offs inside the transceivers connecting Dell, HPE, and NetApp systems to your Fibre Channel switches.
• Fabric Isolation: We move the physical storage disks into our secure, local lab environment to prevent any automated hardware commands from altering the broken file systems.
• Parity Recalculation: Our engineers reverse-engineer proprietary parity schemes—such as NetApp’s RAID-DP—to reconstruct data blocks when multiple physical drives have suffered total hardware failure.

Revolutionary Technology treats all enterprise SAN recovery projects as highly precise, billable engineering operations:

1. Paid Diagnostic Fee: Every incoming SAN storage system or pulled drive array requires an upfront diagnostic engineering fee. Our team performs cleanroom inspections on broken physical disks, runs optical cable traces, and builds a comprehensive block map before delivering a fixed project quote.
2. Bit-Stream Forensic Cloning: We create exact, 1:1 sector copies of every drive in the storage array using hardware write-blockers, protecting your original equipment from any additional wear or modification.
3. Air-Gapped Volume Reassembly: All translation tables, WAFL structures, and container files are reconstructed on an isolated, local network with zero external internet access.
4. Encrypted Secure Handover: Recovered LUNs, volumes, and files are written to encrypted target storage. We maintain a secure copy in our offline vault for exactly 30 days to ensure a smooth configuration and deployment process back into your production data center.