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.
Steps
In the
PowerVault Manager, prepare to use FTP/SFTP:
Verify that the user you will log in as has permission to use the FTP interface. See
Managing local users.
Open a Command Prompt (Windows) or a terminal window (UNIX) and navigate to the destination directory for the log file.
Enter:
sftp -P
portcontroller-network-address or
ftp
controller-network-address
For example:
sftp -P 1022 10.235.216.152 or
ftp 10.1.0.9
Log in as a user that has permission to use the FTP/SFTP interface.
Make sure the client is in binary transfer mode. Enter:
binary
Enter:
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.
Quit the FTP/SFTP session.
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