I created a new virtual machine on XenServer.
I installed the recommended version of Ubuntu. (10 64-bit).
I installed Zimbra Collaboration Suite - Open Source Edition (7.2).
imapproxy is Disabled.
memcached is Disabled.

zmcontrol status return

zimbra@ZCS:~/log$ zmcontrol status
Host zcs.vzletka.kcrm.local
        antispam                Running
        antivirus               Running
        ldap                    Running
        logger                  Running
        mailbox                 Stopped
                zmmailboxdctl is not running.
        mta                     Running
        snmp                    Running
        spell                   Running
        stats                   Running
        zmconfigd               Running
In mialbox.log
        at org.mortbay.start.Main.start(Main.java:534)
        at org.mortbay.start.Main.start(Main.java:441)
        at org.mortbay.start.Main.main(Main.java:119)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown table engine 'InnoDB'

Query being executed when exception was thrown:
SELECT * FROM config
In mysql_error.log
120607 13:16:15 [Note] Event Scheduler: Purging the queue. 0 events
120607 13:16:15 [Note] /opt/zimbra/mysql/libexec/mysqld: Shutdown complete

120607 13:16:15 mysqld_safe mysqld from pid file /opt/zimbra/db/mysql.pid ended
120607 13:17:23 mysqld_safe Starting mysqld daemon with databases from /opt/zimbra/db/data
InnoDB: The InnoDB memory heap is disabled
InnoDB: Mutexes and rw_locks use GCC atomic builtins
InnoDB: Compressed tables use zlib
120607 13:17:23  InnoDB: Initializing buffer pool, size = 614.0M
120607 13:17:23  InnoDB: Completed initialization of buffer pool
120607 13:17:23  InnoDB: highest supported file format is Barracuda.
InnoDB: No valid checkpoint found.
InnoDB: If this error appears when you are creating an InnoDB database,
InnoDB: the problem may be that during an earlier attempt you managed
InnoDB: to create the InnoDB data files, but log file creation failed.
InnoDB: If that is the case, please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.1/en/error-creating-innodb.html
120607 13:17:23 [ERROR] Plugin 'InnoDB' init function returned error.
120607 13:17:23 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
120607 13:17:23 [Note] Event Scheduler: Loaded 0 events
120607 13:17:23 [Note] /opt/zimbra/mysql/libexec/mysqld: ready for connections.
Version: '5.1.58-log'  socket: '/opt/zimbra/db/mysql.sock'  port: 7306  Source distribution
I try this instructions
Performance Tuning Guidelines for Large Deployments - Zimbra :: Wiki

result is not obtained.

this is my first installation of Zimbra, tell me what wrong in the settings of InnoDB