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How do I determine the disk I/O speed of a node in the Junos Space fabric?
You can determine the disk I/O speed of a node in the Junos Space fabric by logging in to the node as an admin user and executing the following command:
dd if=/dev/zero of=./test bs=8k count=500000
where test is the name of the file to which the command output is copied.
The following is the command output:
500000+0 records in500000+0 records out4096000000 bytes (4.1 GB) copied, 15.944 seconds, 257 MB/s
where 257 MB/s indicates the I/O speed of the disk.
We recommend that you delete the test file after determining the I/O speed.
Note: The minimum disk I/O speed recommended for Junos Space Virtual Appliance is 200 Mbps.
For more information about Junos Space Appliances and Junos Space Virtual Appliances, click Junos Space and Applications.