To configure a proxy server on a Pure Storage FlashArray for services like phone home or remote assistance, the system requires a complete proxy URL. The customer has only provided the host address ("10.24.18.120"). The standard URL format required by the Purity Operating Environment is protocol://host:port. Therefore, the protocol prefix (e.g., http:// or https://) and the specific port number are the essential additional pieces of information needed to construct a valid and functional proxy string. While credentials can be part of the URL, they are only necessary if the proxy server requires authentication and are not a universally mandatory component for the configuration itself.

A. Credentials and port number: Incorrect because proxy server credentials are not always required; many proxy environments do not mandate authentication for internal traffic.

B. Protocol prefix and credentials: Incorrect because it omits the port number, which is a fundamental and required component of the proxy address string.

1. Pure Storage Purity//FA CLI Command Reference Guide: The purearray phonehome command documentation specifies the format for the --proxy option.

Reference: Purity//FA CLI Command Reference, version 6.4, page 138.

Quote/Content: The guide defines the proxy string format as [protocol://][user:password@][:port]. This syntax explicitly shows that (provided), protocol:// (protocol prefix), and :port (port number) are the primary structural components, while [user:password@] (credentials) are optional.

2. Pure Storage FlashArray Installation and Upgrade Guide: This guide details the information that should be collected in the pre-installation worksheet, which includes proxy settings.

Reference: FlashArray //X & //C Installation and Upgrade Guide, Purity 6.x, "Worksheet for FlashArray Setup" section.

Content: The worksheet explicitly asks for the "Proxy Server URL," "Proxy Port," and separately, "Proxy Username" and "Proxy Password," reinforcing that the URL/port are distinct and mandatory fields, while credentials are conditional. This confirms that the protocol (as part of the URL) and port are the minimum required additions to the provided IP address.