About the RAM Cache of iSCSI Cake, it should be set carefully, otherwise, it may cause the server crashed.
Customers may set the iSCSI Cake RAM Cache as 4096M, in this case, the server may be crashed. The RAM Cache should not be set more than 832M, and it would be better if it does not exceed 800M. If there are many clients, the RAM Cache of iSCSI Cake should be set as small as possible. And all the processes should not exceed 1.6G.