Dell EMC PowerVault MD 34XX/38XX Series Storage Arrays Administrator's Guide

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Password guidelines

Use secure passwords for your storage array. A password should be easy for you to remember but difficult for others to determine. Consider using numbers or special characters in the place of letters, such as a 1 in the place of the letter I, or the at sign (@) in the place of the letter 'a'.
For increased protection, use a long password with at least 15 alphanumeric characters. The maximum password length is 30 characters.
Passwords are case sensitive.
NOTE: You can attempt to enter a password up to ten times before the storage array enters a lockout state. Before you can try to enter a password again, you must wait 10 minutes for the storage array to reset. To reset the password, press the password reset switch on your RAID controller module.