With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
thinserverReadMissesDirty
thinserver Read Misses Dirty
1.3.6.1.4.1.2.6.119.2.3.2.3
Number of times a read was relayed to the server because the file on this device is different than the version on the master server.
Back to ibm-tsvrmib MIB page.
IPHost Network monitor allows you to monitor thinserverReadMissesDirty on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM switches right now.