The System Administrator's Guide documents relevant information regarding the deployment, configuration, and administration of Red Hat Enterprise Linux 7. It is. Release Notes for the Cisco ASA Series, 9.6(x). ![]() Lets see what are the Public DNS records we need to Configure for Exchange 2013/Exchange 2016 (Client Access / mail flow / Autodiscover) Create A record – Mail. Cisco Hyper. Flex System, a Hyperconverged Virtual Server Infrastructure. The past decade has witnessed major shifts in the data center, and the most significant one being the widespread adoption of virtualization of servers as the primary computing platform for most businesses. The flexibility, speed of deployment, ease of management, portability, and improved resource utilization has led many enterprises to adopt a “virtual first” stance, where all environments are deployed virtually unless circumstances made it impossible. While the benefits of virtualization are clear, the proliferation of virtual environments has brought other technology stacks into the spotlight, highlighting where they do not offer the same levels of simplicity, flexibility, and rapid deployment as the virtualized compute platforms do. Networking and storage systems in particular have come under increasing scrutiny to be as agile as hypervisors and virtual servers. Cisco offers powerful solutions for rapid deployment and easy management of virtualized computing platforms, including integrated networking capabilities, with the Cisco Unified Computing System (Cisco UCS) product line. Now with the introduction of Cisco Hyper. Flex, we bring similar enhancements to the virtualized servers and Hyperconverged storage market. Cisco Hyper. Flex systems have been developed using the Cisco UCS platform, which combines Cisco HX- Series x. Cisco UCS Fabric Interconnects, into a single management domain, along with industry leading virtualization hypervisor software from VMware, and new software defined storage technology. The combination creates a virtualization platform that also provides the network connectivity for the guest virtual machine (VM) connections, and the distributed storage to house the VMs using Cisco UCS x. The unique storage features of the newly developed log based filesystem enable rapid cloning of VMs, snapshots without the traditional performance penalties, data deduplication and compression, without having to purchase all- flash based storage systems. All configuration, deployment, management, and monitoring tasks of the solution can be done with the existing tools for Cisco UCS and VMware, such as Cisco UCS Manager and VMware v. Center. This powerful linking of advanced technology stacks into a single, simple, rapidly deployable solution makes Cisco Hyper. Flex a true second generation hyperconverged platform for the modern data center. The Cisco Hyper. Flex System provides an all- purpose virtualized server platform, with hypervisor hosts, network connectivity, and virtual server storage across a set of Cisco UCS HX- Series x. Legacy data center deployments relied on a disparate set of technologies, each performing a distinct and specialized function, such as network switches connecting endpoints and transferring Ethernet network traffic, and Fibre Channel (FC) storage arrays providing block based storage devices via a unique storage array network (SAN). Each of these systems had unique requirements for hardware, connectivity, management tools, operational knowledge, monitoring, and ongoing support. A legacy virtual server environment operated in silos, within which only a single technology operated, along with their correlated software tools and support staff. Silos were often divided between the x. SAN connectivity and storage device presentation, the hypervisors, virtual platform management, and the guest VMs themselves along with their Operating Systems and applications. This model proves to be inflexible, difficult to navigate, and is susceptible to numerous operational inefficiencies. To cater for the needs of the modern and agile data center, a new model called converged architecture gained wide acceptance. A converged architecture attempts to collapse the traditional siloed architecture by combining various technologies into a single environment, which has been designed to operate together in pre- defined, tested, and validated designs. A key component of the converged architecture was the revolutionary combination of x. Ethernet and Fibre Channel networking offered by the Cisco UCS platform. Converged architectures leverage Cisco UCS, plus new deployment tools, management software suites, automation processes, and orchestration tools to overcome the difficulties deploying traditional environments, and do so in a much more rapid fashion. These new tools place the ongoing management and operation of the system into the hands of fewer staff, with faster deployment of workloads based on business needs, while still remaining at the forefront in providing flexibility to adapt to changing workload needs, and offering the highest possible performance. Cisco has proved to be incredibly successful in these areas with our partners, developing leading solutions such as Cisco Flex. Pod, Smart. Stack, Versa. Stack, and v. Block architectures. Despite the advancements, since these converged architectures incorporate legacy technology stacks, particularly in the storage subsystems, there often remained a division of responsibility amongst multiple teams of administrators. Alongside the tremendous advantages of converged infrastructure approach, there is also a downside wherein these architectures use a complex combination of components, where a simpler system would suffice to serve the required workloads. Significant changes in the storage marketplace have given rise to the software defined storage (SDS) system. Legacy FC storage arrays continued to utilize a specialized subset of hardware, such as Fibre Channel Arbitrated Loop (FC- AL) based controllers and disk shelves along with optimized Application Specific Integrated Circuits (ASIC), read/write data caching modules and cards, plus highly customized software to operate the arrays. With the rise in the Serial Attached SCSI (SAS) bus technology and its inherent benefits, storage array vendors began to transition their internal architectures to SAS, and with dramatic increases in processing power in the recent x. ASICs are used. With the shrink in the disk physical sizes, servers began to have the same density of storage per rack unit (RU) as the arrays themselves, and with the proliferation of NAND based flash memory solid state disks (SSD), they also now had access to input/output (IO) devices whose speed rivaled that of dedicated caching devices. As servers now contained storage devices and technology to rival many dedicated arrays in the market, the remaining major differentiator between them was the software providing allocation, presentation and management of the storage, plus the advanced features many vendors offered. This led to the increased adoption of software defined storage, where the x. In a somewhat unexpected turn of events, some of the major storage array vendors themselves were pioneers in this field, recognizing the shift in the market and attempting to profit from their unique software features, versus specialized hardware as they had done in the past. Some early uses of SDS systems simply replaced the traditional storage array in the converged architectures as described earlier. This infrastructure approach still used a separate storage system from the virtual server hypervisor platform, and depending on the solution provider, also still used separate network devices. If the server that hosted the virtual servers, also provided the SDS environment in the same model of servers, could they not simply do both things at once and collapse the two functions into one? This idea and combination of resources is what the industry has given the moniker of a hyperconverged infrastructure. Hyperconverged infrastructures combine the computing, memory, hypervisor, and storage devices of servers into a single monolithic platform for virtual servers. There is no longer a separate storage system, as the servers running the hypervisors also provide the software defined storage resources to store the virtual servers, effectively storing the virtual machines on themselves. A hyperconverged infrastructure is far more self- contained, simpler to use, faster to deploy, easier to consume, yet flexible and with high performance. By combining the convergence of compute and network resources provided by Cisco UCS, along with the new hyperconverged storage software, the Cisco Hyper.
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