Dell Products Inc.

Kiran Kumar Devarapalli

Krishnaprasad Koladi

Karan Singh Gandhi

Avinash Bendigeri

Chandrashekar Nelogal

Neeraj Joshi

Robert J Volentine

Vishnu Murty Karrotu

Krishnaprasad K

Kavi K Chakkravarthy

Shiva Prasad Katta

Jagadeesha Bollandoor

An information handling system includes first and second servers, and a storage controller. The storage controller to initialize a first virtual function for the first server, to initialize a second virtual function for the second server, to assign equal amounts of a first portion of a memory to the first and second virtual functions, to profile an input/output workload of the first and second virtual functions, to allocate amounts of a second portion of the memory to the first and second virtual functions based on a first input/output profile of each of the virtual functions, and to allocate a remaining portion of the memory as a global section of the memory for use by any of the virtual functions.

System and method for cache reservation in an information handling system

A method and an information handling system (IHS) dynamically modifies queue depth values based on changing relative workload demands of virtual functions. A controller, executing code of a queue depth profiler, determines, for each virtual function, an average number of total unfulfilled, outstanding requests. The controller compares values for an average number of total outstanding requests across the plurality of virtual functions. The controller determines a relative demand for request queue depth corresponding to each respective virtual function based on the compared values. The controller calculates desired queue depth values for each virtual function, based on the relative demand. The controller triggers completion of pending requests for a first processing state. In response to successful completion of the first processing state, the controller enables initiation of a second processing state in which request processing continues using the desired queue depth values.

Dynamic allocation of queue depths for virtual functions in a converged infrastructure

A method for allocating virtual machines (VMs) to run within a non-uniform memory access (NUMA) system includes a first processing node and a second processing node. A request is received at the first processing node for additional capacity for at least one of (a) establishing an additional VM and (b) increasing processing resources to an existing VM on the first processing node. In response to receiving the request, a migration manager identifies whether the first processing node has the additional capacity requested. In response to identifying that the first processing node does not have the additional capacity requested, at least one VM is selected from an ordered array of the multiple VMs executing on the first processing node. The selected VM has low processor and memory usage relative to the other VMs. The selected VM is migrated from the first processing node to the second processing node for execution.

Method of migrating virtual machines between non-uniform memory access nodes within an information handling system

An information handling system includes a plurality of storage disks arranged as a redundant array of independent disks and a controller. The controller communicates with each of the storage disks. The controller determines a total amount of storage space utilized to store parity information within the storage disks based on a smallest disk size of the storage disks and a number of storage disks in the redundant array of independent disks, calculates an amount of storage space utilized to store parity information on each of the disks based on the total amount of storage space utilized to store parity information and the number of storage disks, and allocates a parity region of sectors within each of the storage disks to store the parity information. The parity region is an inner most region of a disk.

System and method for improving read performance of a distributed parity RAID solution

According to one embodiment, a method includes receiving a write request and determining a first portion of information associated with the write request. The method additionally includes determining a first location on a first disk to write the first portion of information and, based on the determined first location on the first disk, determining a second location on a second disk to write the first portion of information. The method further includes writing the first portion of the information to the first location on the first disk. The first location comprises an outer track of the first disk. The method further includes writing the first portion of the information to the second location on the second disk, the second location comprising an inner track of the second disk.

Method and system for writing to and reading from computer readable media

In accordance with these and other embodiments of the present disclosure, a system may include a processor and a program of executable instructions embodied in non-transitory computer-readable media accessible to the processor. The program of executable instructions may be configured to, when read and executed by the processor, monitor for a failure of a storage resource in a pool of storage resources configured as a plurality of optimally-redundant virtual storage resources, determine if a virtual storage resource comprising the storage resource is able to rebuild the virtual storage resource, and, in response to determining that the virtual storage resource comprising the storage resource is unable to rebuild the virtual storage resource, migrate each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state.

Systems and methods for migration of virtual machines across virtual storage resources

Systems and methods are provided that may be employed to dynamically and intelligently allocate fault resistant memory (FRM) by calculating the currently required size of a protected reliable memory region for the FRM on an as-needed basis, rather than on a static basis. In one example, an operating system, or hypervisor or other virtualization layer may be employed to calculate the required size for the protected reliable memory region of the FRM based on current memory requirements of the virtualization layer kernel and running instances of other critical processes, and then to interact in real time with the system BIOS to cause an adjustment in the reserved protected reliable memory region.

Systems and methods for dynamic memory allocation of fault resistant memory (FRM)

A method may include, in a chassis configured to receive a plurality of modular information handling systems and a plurality of modular information handling resources, exposing a first virtual function instantiated on a management processor disposed in the chassis to a switch interfaced between a modular information handling system and the management processor. The method may also include communicating, by the management processor, an input/output request from the modular information handling system received by the first virtual function to at least one of a second virtual function instantiated on a first storage controller communicatively coupled to the management processor and a third virtual function instantiated on a second storage controller communicatively coupled to the management processor. The method may further include receiving, by the management processor, an acknowledgment of completion of the input/output request from at least one of the second virtual function and the third virtual function.

Systems and methods for mirroring virtual functions in a chassis configured to receive a plurality of modular information handling systems and a plurality of modular information handling resources

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Bengaluru, India

Kiran Kumar Devarapalli