Dell PowerVault ME4 Series Storage System Administrator’s Guide

Download a system heat map data

If requested by support engineers for analysis, you can download cumulative I/O density data, also known as heat map data, from the system. To gather this data, access the storage system FTP/SFTP interface and use the get logs command with the heatmap option to download a log file in CSV format. The file contains data for the past seven days from both controllers.

1. In the PowerVault Manager, prepare to use FTP/SFTP:
   1. Determine the network-port IP addresses of the system controllers. See Configuring controller network ports.
   2. Verify that the FTP/SFTP service is enabled on the system. See Enable or disable system-management settings.
   3. Verify that the user you plan to use has FTP/SFTP interface permissions. See Adding, modifying, and deleting users.
2. Open a Command Prompt (Windows) or a terminal window (UNIX) and navigate to the destination directory for the log file.
3. Type:
   sftp -P port controller-network-address or

   ftp controller-network-address

   For example:

   sftp -P 1022 10.235.216.152 or

   ftp 10.1.0.9

4. Log in as a user that has permission to use the FTP/SFTP interface.
5. Type:
   get logs:heatmap filename.csv

   where: filename.csv is the file that contains the data.

   For example:

   get logs:heatmap IO_density.csv

   In FTP, wait for the message Operation Complete to appear. No messages are displayed in SFTP; instead, the get command will return once the download is finished.

6. Quit the FTP/SFTP session.