Pivot3 Acuity X5 Accelerator nodes have either a 1.6TB/1.92TB (X5-6500) or 3.2TB/3.8TB (X5-X2500) NVMe PCIe Flash card.

The 1.6TB NVMe PCIe Flash card in an Acuity X5 Accelerator node (X5-6500) is segmented in:
Write Cache Primary: 560GB
Write Cache Partner Replica: 560GB
Read-Warm Cache: 480GB

The 3.2TB NVMe PCIe Flash card in an Acuity X5 Accelerator node (X5-X2500) is segmented in:
Write Cache Primary: 1,120GB
Write Cache Partner Replica: 1,120GB
Read-Warm Cache: 960GB

X5 Hybrid SSDs: 2x 400GB are a caching tier as part of the Erasure Coding process
X5 All-Flash SSDs: 400GB/480GB/800GB/960GB/1.6TB/1.9TB/3.8TB

A Pivot3 Acuity X5 Hybrid node holds 2 SSDs and 12 HDDs.
A Pivot3 Acuity X5 All-Flash node holds 8 SSDs.

Pivot3 Acuity X3 Accelerator nodes (X3-2500; X3-6500) have either an 960GB 2.5-inch PCIe SSD (U.2) or an 1.6TB NVMe PCIe Flash card.

X3 Hybrid SSD: 1x 400GB is a caching tier as part of the Erasure Coding process
X3 All-Flash SSDs: 960GB/1.9TB/3.8TB

A Pivot3 Acuity X3 Hybrid node holds 1 SSD and 8 HDDs.
A Pivot3 Acuity X3 All-Flash node holds 8 SSDs.