Before an XtremIO X1 cluster can start, it is required that the Battery Backup Units (BBUs) are charged to at least 70%. This ensures that there is sufficient power reserve to maintain data integrity and allow for safe shutdown procedures in case of an unexpected power loss. The BBUs provide power to the Storage Processors and other critical components during an outage, allowing them to complete any in-progress operations and commit data to SSDs1.
The startup process checks the BBU charge level and will only proceed if the minimum charge requirement is met. This is a safety feature designed to protect the system and the data it holds. If the BBUs are not adequately charged, the system will not start, preventing potential data loss or corruption that could occur if the system were to lose power without the ability to properly shut down1.

For uploading the XtremApp to the XtremIO Management Server (XMS), the recommended tool is WinSCP. WinSCP is a popular SFTP client and FTP client for Microsoft Windows that allows for secure file transfer between a local and a remote computer1. It is particularly useful for uploading files like XtremApp due to its graphical user interface, which simplifies the process of transferring files.
The steps for uploading the XtremApp to the XMS using WinSCP are as follows:
Download and install WinSCP on your local machine.
Open WinSCP and enter the XMS's hostname or IP address, as well as the username and password.
Navigate to the XtremApp file on your local machine within the WinSCP interface.
Drag and drop the XtremApp file to the desired directory on the XMS.
Verify that the upload was successful by checking the file size and timestamp on the XMS.
This method is recommended in the Official Dell XtremIO Maintenance Achievement document as it provides a secure and reliable way to manage files on the XMS1.

The SAS (Serial Attached SCSI) connection speed for an XtremIO X1 is 6 Gb/s, while for an XtremIO X2, it is 12 Gb/s. The increased speed in the X2 model enhances data transfer rates and overall performance, reflecting advancements in the hardware capabilities of the newer generation.

The virtual XtremIO Management Server (XMS) OVA file can be found in the Tools & Utilities download section on support.emc.com. This is confirmed by the information provided in the Dell XtremIO Maintenance Achievement document, which details the resources and procedures for maintaining XtremIO products, including the deployment of the XMS1.

1 - PDU (Power Distribution Unit)
2 - BBUs (Battery Backup Units)
3 - XMS (XtremIO Management Server)
4 - Storage Controllers