NetApp StorageGRID Data Recovery

StorageGRID is NetApp's S3 and Swift object platform, usually holding archives, backup copies and unstructured data at scale. Object stores fail differently from arrays: the risk is a lost grid metadata layer, an ILM policy that deleted the last copy, or losing more storage nodes than the erasure-coding profile can tolerate.

Platform Lineage and Naming

StorageGRID began as Bycast StorageGRID, acquired by NetApp in 2010, and has been developed since as NetApp's object storage platform. It is distinct from ONTAP and does not use WAFL.

Deployments combine appliance nodes — SG5612, SG5660, SG5712, SG5760, SG6060, SGF6024, SGF6112 — with admin and gateway nodes (SG100, SG1000) and software-only nodes on VMware or bare metal. Grids are frequently multi-site.

• Bycast StorageGRID (original product and company)
• StorageGRID Webscale (previous product name)
• ILM — Information Lifecycle Management policies
• Grid nodes: Admin, Gateway, Storage, Archive

Generations and Models We Evaluate

• Storage appliances: SG5612, SG5660, SG5712, SG5760, SG6060, SGF6024, SGF6112
• Services appliances: SG100, SG1000 (admin and gateway roles)
• Software nodes: VMware-based and bare-metal/container storage, admin and gateway nodes
• Grid structures: Sites, storage pools, ILM rules, erasure-coding profiles, Cassandra metadata store

Architecture and Data Layout

A StorageGRID deployment is a grid of nodes across one or more sites. Object data is stored on storage nodes, while object metadata is held in a distributed Cassandra store replicated across nodes. Losing the metadata layer makes object data unreachable even when the underlying disks are intact.

ILM policies decide whether each object is replicated (multiple whole copies) or erasure coded across nodes and sites, and they can move or delete copies over time. A misconfigured or newly applied ILM rule is a recognised cause of unintended data loss in object environments.

Recovery work involves reconstructing the underlying node storage, then rebuilding the relationship between object fragments and their metadata so that objects can be exported with their names and keys intact.

• Storage appliance nodes use E-Series/SANtricity volume groups or disk pools underneath, so node-level hardware recovery follows E-Series methods.
• Grid-level protection is either replication or erasure coding defined per ILM rule; how many nodes can be lost depends on the specific profile applied to those objects at the time.

Logical Failures

• ILM policy change or misconfiguration that removed the last copy of objects
• Bucket or object deletion, including lifecycle-expiry deletions
• Cassandra metadata store damage or loss of quorum
• Failed StorageGRID upgrade or node decommission
• Loss of more storage nodes than the erasure-coding profile tolerates
• Site loss in a multi-site grid where the second copy had not yet been written

Hardware Failures

• Multiple drive failures inside a storage appliance node
• Storage node controller or appliance failure
• Expansion tray, cabling and expander faults
• Boot media failure on admin, gateway or storage nodes
• Power or network events isolating a site from the grid

Encryption and Keys

StorageGRID supports server-side encryption, bucket-level encryption and self-encrypting drives on appliance nodes, with external key management options. Key material and grid configuration must be preserved or the object fragments cannot be decrypted.

Frequently Asked Questions

An ILM change deleted objects we still needed. Can they be recovered?

It depends on whether copies still exist on any node or in an archive tier and on how much has been reclaimed since. Stop ILM evaluation and node decommissioning immediately and have the grid evaluated.

Our grid lost its metadata. Is the object data readable?

The fragments may still be on disk, but object names and keys live in the metadata layer. Rebuilding usable objects requires reconstructing or partially reconstructing that metadata — this is the core of a StorageGRID case.

Do you handle software-only StorageGRID nodes?

Yes. Where nodes ran on VMware or bare metal, the underlying datastores and disks are the recovery source, and the same grid structures apply.

Related

• NetApp E-Series / EF-Series — /services/enterprise-storage/netapp/e-series-ef-series
• NetApp FAS — /services/enterprise-storage/netapp/fas
• NAS Data Recovery — /services/nas-recovery
• SAN Data Recovery — /services/other-data-recovery-services/san-recovery