Abstract: Methods and systems for improved access to storage resources include installing a virtual storage appliance as a virtual machine on a hypervisor. The virtual storage appliance installs itself as a virtual PCI-E device and communicates with guest operating systems of the hypervisor using direct memory access via a PCI-E non-transparent bridge. The storage virtual appliance provides access to local and external storage resources with very high performance to applications running under the guest operating system, thereby overcoming performance barriers associated with native hypervisor driver models.

Abstract: Managing multiple cartridges that are electrically coupled together includes obtaining general purpose command instructions from a chassis with a cartridge where the cartridge has a unique application and is connected to the chassis and further operating the unique application based on the general purpose command instructions.

Abstract: The present disclosure provides a method for managing buffers of a device for Universal Serial Bus (USB) communication in a wireless environment. The method includes determining respective current data storage levels of transmit buffers that store different types of data for USB communication; comparing the respective current data storage levels of the transmit buffers with corresponding respective predetermined threshold levels; and controlling an input rate or output rate of a first transmit buffer if it is determined based on the comparison that the first transmit buffer has a current data storage level that exceeds a predetermined threshold level.