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To enable a user to both read and write to a file, the administrator needs to provide "modify" rights. This permission level allows the user not only to open and view the file (read) but also to make changes and save those changes back to the file (write). "Read and execute" rights would allow the user to open and run the file but not make any changes. "List folder contents" rights would enable the user to view the files within a folder but not make changes to them. "Full control" rights would provide the user with complete control over the file, including the ability to change permissions and delete the file, which exceeds the principle of least-privilege access necessary for this task.

Changing the boot order on the server and restricting console access would prevent unauthorized access attempts via USB devices at startup, as the server would not boot from any external media and only authorized users could access the console. Setting a BIOS/UEFI password on the server would also help, but it could be bypassed by resetting the CMOS battery or using a backdoor password. Configuring the host OS to deny login attempts via USB would not prevent booting from a malicious USB device that could compromise the system before the OS loads. Disabling all the USB ports on the server would limit functionality, as some peripherals or devices may need to use them. References:

• https://www.pcmag.com/how-to/dont-plug-it-in-how-to-prevent-a-usb-attack
• https://www.techopedia.com/definition/10362/boot-order
• https://www.techopedia.com/definition/10361/console-access
• https://www.techopedia.com/definition/102/bios-password
• https://www.techopedia.com/definition/10363/cmos-battery

Constant replication is a type of replication in which all files are replicated, all the time. Replication is a process of copying data from one location to another for backup, recovery, or distribution purposes. Constant replication is also known as real-time replication or synchronous replication. It ensures that any changes made to the source data are immediately reflected on the target data without any delay or lag. Constant replication provides high availability and consistency, but it requires high bandwidth and low latency. Application consistent replication is a type of replication that ensures that the replicated data is consistent with the state of the application that uses it. It involves quiescing or pausing the application before taking a snapshot of the data and resuming the application after the snapshot is taken. Application consistent replication provides better recovery point objectives than crash consistent replication, which does not quiesce the application before taking a snapshot. Synthetic full replication is a type of replication that involves creating a new full backup by using the previous full backup and related incremental backups. It reduces the backup window and network bandwidth consumption by transferring only changed data from the source to the target. Full replication is a type of replication that involves copying all data from the source to the target regardless of whether it has changed or not. It provides a complete backup of the data, but it requires more storage space and network bandwidth than incremental or differential replication. References: https://www.howtogeek.com/199068/how-to-upgrade-your-existing-hard-drive-in-under-an-hour/ https://www.howtogeek.com/202794/what-is-the-difference-between-127.0.0.1-and-0.0.0.0/ https://www.howtogeek.com/443611/how-to-encrypt-your-macs-system-drive-removable-devices-and-individual-files/

A rescan on the server’s RAID controller is a possible troubleshooting step to detect the existing RAID configurations on the connected storage arrays. A firmware upgrade may cause the RAID controller to lose the RAID metadata or settings, and a rescan may restore them. A rescan is preferable to restoring the default RAID configuration, as the latter may erase the existing data on the arrays. Power cycling the storage arrays or booting the OS into recovery mode may not help if the RAID controller does not recognize the RAID sets.

References: CompTIA Server+ Study Guide, Chapter 7: Storage, page 287.