The Hitachi Content Platform (HCP) S10 is a high-density storage node housed in a 4U chassis. This specific hardware model is designed to maximize storage capacity within a single enclosure. Its physical design accommodates up to 60 top-loading 3.5-inch SAS hard disk drives. This configuration is optimized for large-scale, cost-effective, and deep-archiving object storage solutions where density and capacity are primary requirements.

A. 24: This drive count is typical for smaller 2U server or storage enclosures, not the high-density 4U HCP S10.

B. 30: This represents only half of the maximum drive capacity supported by the HCP S10 chassis.

D. 128: This number of drives significantly exceeds the physical capacity of a single 4U HCP S10 enclosure.

1. Hitachi Vantara Corporation. Hitachi Content Platform S-Series Node Hardware Reference, Document No. MK-92HCP037-10, October 2019. In the "HCP S10 node specifications" table, Section 1, it is stated: "Drives: Up to 60 x 3.5-inch SAS drives."

2. Hitachi Vantara Corporation. Hitachi Content Platform (HCP) Datasheet, Document No. DS-431-H, March 2021. The "HCP S-Series Appliance Specifications" table for the S10 model specifies "60 drives/node" and "4U per node."