单项选择题 A customer has a 16-core Power 570 with 64 GB RAM. They have 2 VIO servers and 4 LPARs， all running very heavy database applications. Storage is virtualized. The storage is SAN based and configured via MultiPath IO on the LPARs. The users are complaining about poor  performance. The VIO servers are reporting low CPU load and little memory usage. The LPARs show 100% disk busy time and are running very slowly， approximately 6-10MB/sec. The SAN reports LUN utilization of less that 20% busy time.  What should be done to resolve this problem？ （）

单项选择题 When configuring Shared Ethernet Adapter （SEA） failover between two VIO servers，  which of the following attributes must have a different value on both VIO servers？（）

单项选择题 In relation to the system’s Logical Memory Block （LMB） size， when creating an LPAR using Integrated Virtualization Manager （IVM），  what is the largest allocation of memory allowed？（）