GPT (GUID Partition Table) is a partitioning scheme that allows creating partitions on large hard drives (more than 2 TB). It supports up to 128 partitions per drive and uses 64-bit addresses to locate them. MBR (Master Boot Record) is an older partitioning scheme that has limitations on the size and number of partitions (up to 4 primary partitions or 3 primary and 1 extended partition per drive). To provision a new 4 TB drive, the technician should partition it using GPT. Verified References: [GPT], [MBR]

Explanation
RAID 1 (mirroring) is a RAID configuration that should be used to provide redundancy for the OS on a server that has two hard drives on which to install the OS. RAID 1 (mirroring) is a configuration that duplicates data across two or more drives. It provides fault tolerance and improves read performance, but reduces storage capacity by half. If one drive fails in RAID 1, the other drive can continue to operate without data loss or system downtime. RAID 0 (striping) is a configuration that splits data across two or more drives without parity or redundancy. It improves performance but offers no fault tolerance. If one drive fails in RAID 0, all data is lost and the system cannot boot. RAID 5 (striping with parity) is a configuration thatstripes data across three or more drives with parity information. It provides fault tolerance and improves performance, but reduces storage capacity by one drive's worth of space. RAID 5 can tolerate one drive failure without data loss, but not two or more. RAID 6 (striping with double parity) is a configuration that stripes data across four or more drives with double parity information. It provides fault tolerance and improves performance, but reduces storage capacity by two drives' worth of space. RAID 6 can tolerate two drive failures without data loss, but not three or more.References:https://www.howtogeek.com/199068/how-to-upgrade-your-existing-hard-drive-in-under-an-ho

Explanation
The most likely cause of this issue is that the UEFI boot was interrupted by a missing Linux boot file. UEFI (Unified Extensible Firmware Interface) is a standard that defines the interface and functionality of the firmware that initializes the hardware and software components of a system before loading the operating system. UEFI boot is a process that uses UEFI firmware to load and execute a boot loader, which is a program that loads the operating system kernel and other essential files. A Linux boot file is a file that contains information and instructions for the boot loader, such as the location of the kernel, the root file system, and the boot parameters. If a Linux boot file is missing or corrupted, the boot loader cannot find or load the kernel, and the system stops during the boot process with a blank screen and an f prompt.
References: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 4, Lesson 4.1, Objective 4.1

These are some steps for resolving issues with DNS. A gateway is not required for LAN access so this cannot be the answer.
Solution 1: Check your Computer is correct or not for IP Address
Solution 2: Flush and Reset a client resolver cache and Renew DNS client registration Solution 3: Edit DNS Lookup Host file entry
https://morgantechspace.com/2014/03/can-ping-by-ip-address-but-not-by-machine-name.html#

Drives, fans, and power supplies are server components that can most commonly be replaced without downtime if they are hot-swappable. Hot-swappable components can be removed and inserted while the server is running, without affecting its operation or performance. Drives store data and applications, fans cool down the server components, and power supplies provide electricity to the server. Replacing these components can prevent data loss, overheating, or power failure. References: CompTIA Server+ Certification Exam Objectives, Domain 2.0: Hardware, Objective 2.2: Given a scenario, install, configure and maintain server components.