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The architecture of Azure Operator Nexus revolves around core components such as compute servers, storage appliances, and network fabric devices. Each Azure Operator Nexus instance supports up to two storage appliances. These appliances play a vital role as the dedicated and persistent storage solution for the tenant workloads hosted in the Azure Operator Nexus instance.
Within each Azure Operator Nexus storage appliance, multiple storage devices are grouped together to form a unified storage pool. This pool is then divided into multiple volumes, which are then presented to the compute servers and tenant workloads as persistent volumes.
Available SKUs
This table lists the available SKUs for the storage appliances in the near-edge Azure Operator Nexus offering.
Pure FlashArray
| SKU | Total raw storage capacity | Usable raw storage capacity |
|---|---|---|
| Pure FlashArray X70R4-45TB | 45 TB | 25.74 TB |
| Pure FlashArray X70R4-91TB | 91 TB | 54.75 TB |
| Pure FlashArray X70R4-183TB | 183 TB | 114.66 TB |
| Pure FlashArray X70R4-366TB | 366 TB | 272.36 TB |
| Pure FlashArray X70R4-622TB | 622 TB | 457.23 TB |
An Azure Operator Nexus instance can have up to two storage appliances. The storage appliances do not have to have the same raw storage capacity. Azure Operator Nexus recommends that you work with Pure to identify your workloads' capacity requirements and select the Pure SKU accordingly.
Raw vs effective storage capacity
The Pure FlashArray contains a variety of data reduction features. The effective capacity of the storage appliance, which gives the amount of data that can be stored from the workload's perspective, is typically larger than the raw capacity. The effective capacity depends strongly on the data being stored. For example, pre-compressed or application-encrypted data achieves lower data reduction ratios on the storage appliance than data with high levels of duplication. Pure storage can model likely achievable data reduction ratios and effective capacity for a wide variety of workloads to help you choose a SKU with a suitable amount of storage capacity.
Encryption at rest
All data stored on the Pure FlashArray is encrypted at rest using platform-managed storage server-side encryption. For more information, see Pure's FlashArray Data Security Overview (sign in required).
Storage connectivity
This diagram shows the connectivity model followed by storage appliance in the near-edge offering.
Storage limits
This table lists the characteristics of the storage appliance.
| Property | Specification/Description |
|---|---|
| Raw storage capacity | Determined by SKU - see Available SKUs |
| Usable capacity | Determined by SKU - see Available SKUs |
| Number of maximum I/O operations supported per second (with 80/20 read/write ratio) |
250 K+ (4K) 150 K+ (16K) |
| Number of I/O operations supported per volume per second | 50 K+ |
| Maximum I/O latency supported | 10 ms |
| Nominal failover time supported | 10 s |