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VirtualDJ Avast Free Security. WhatsApp Messenger. Talking Tom Cat. Clash of Clans. Subway Surfers. TubeMate 3. Google Play. A good candidate for deduplication is a file share that hosts user documents, virtual files, or software deployment files that contain data that is modified infrequently and read frequently. Poor candidates for deduplication are a constantly-mounted SQL Server database that is running virtual machines, and live Exchange Server databases.
Good candidates allow time to deduplicate the files. File age policies can be applied to control when files are deduplicated to prevent early or frequent deduplication of files that are still likely to be modified significantly.
Deduplication requires reading, processing, and writing large amounts of data. This consumes server resources and must be considered when planning a deployment. Servers typically have periods of high activity and times when there is low resource utilization. Deduplication can get the most work done when resources are available. If a server is always running at maximum capacity, it is probably not a good candidate for deduplication, even though the deduplication processes can optimize some files by using background optimization jobs.
Based on observed savings and typical resource usage, deployment candidates for deduplication are ranked as follows:. Server hardware should meet the minimum requirements for running Windows Server If you plan to support deduplication on multiple volumes on the same server, you need to plan an appropriately size for the system to ensure that it can process the data.
The general rule is that the server needs 1 CPU-core and MB of free memory to run a deduplication job on a single volume, and that job can process about GB per hour or around 2 TB per day. Deduplication scales with additional CPU core processors and available memory to enable parallel processing of multiple volumes.
If you divide by MB, you can calculate that the server could process about 11 volumes at a time. If you add 8 GB of memory, the system could process 17 volumes at a time. Data Deduplication supports up to 90 volumes at a time; however, deduplication can simultaneously process one volume per physical CPU core processor plus one.
Hyper-threading does not impact this because only physical core processors can be used to process a volume. A system with 16 CPU core processors and 90 volumes will process 17 volumes at a time until all 90 volumes are done, if there is sufficient memory.
Virtual server instances should follow the same guidance as physical hardware regarding server resources. You can access data if a deduplication-enabled volume is converted to a CSV, but you cannot continue to process files for deduplication on Windows Server For detailed guidance on determining the maximum volume size for your specific workload and system configuration, see Sizing Volumes for Data Deduplication in Windows Server. Must be exposed to the operating system as non-removable drives.
Remotely-mapped drives are not supported. Files with extended attributes, encrypted files, files smaller than 32 KB, and reparse point files are not processed by deduplication. In general, enabling Windows Server Data Deduplication on data volumes that are directly mounted on a Hyper-V compute server as opposed to mounted from a shared folder hosted on a separate file server is not supported. However, there is a useful limited configuration that is supported as an exception.
For this limited configuration, deduplication must be running in a supported scenario. In particular, open VHD files used for accessing storage in guest virtual machines are only supported for VDI and virtualized backup scenarios.
A Hyper-V compute server or cluster that is dedicated to running VDI or virtualized backup guest workloads. Guest VHDs are stored in locally attached data volumes. In a cluster configuration, the volumes are mounted as Cluster Shared Volumes. All deduplication tasks on a given server or cluster are scheduled to run in a limited idle timeframe when all VDI or virtualized backup workloads are idle.
For information about volume sizing and deduplication performance monitoring, see Sizing Volumes for Data Deduplication in Windows Server. In order to validate the VDI workload capacity of this limited configuration, run a load test using the supported VDI guest images.
Tools such as LoginVSI or its equivalent, should be used to directly validate the configuration prior to its use in production. If the savings rates measured in the VDI deployment fall in the range covered in this article, adjust the deduplication settings as instructed.
For virtualized backup workloads, a full backup cycle should be validated with production-equivalent workloads to ensure that the backup and deduplication jobs complete. An active Microsoft Service Premier Support contract is recommended to facilitate further communication, telemetry, and advice that can be useful when defining these configurations. Beginning with Windows Server R2, deduplication adds support for running virtual machines in a VDI configuration or running virtualized backup applications that store backup date in VHDs.
The VHDs used must be stored on a file server separate from the Hyper-V host computer unless a limited hyper-converged configuration is used as described in the preceding section.
Deduplication of open files has not been fully validated for general virtualization or other applications, and additional issues may be encountered. Deduplication can be set to process files that are 0 days old and the system will continue to function as expected, but it will not process files that are exclusively open.
It is not a good use of server resources to deduplicate a file that is constantly being written to, or will be written to in the near future. If you adjust the default minimum file age setting to 0, test that deduplication is not constantly being undone by changes to the data. In Windows Server , deduplication will not process files that are constantly and exclusively open for write operations. This means that you will not get any deduplication savings unless the file is closed when an optimization job attempts to process a file that meets your selected deduplication policy settings.
The deduplication process will optimize the parts of the VHD file that are older than the selected minimum days defined by the deduplication policy. Running virtual machine VHDs can realize considerable storage savings. Setting a hard quota on a volume root folder that also has deduplication enabled is not supported. When a hard quota is present on a volume root, the actual free space on the volume and the quota-restricted space on the volume are not the same.
This may cause deduplication jobs to fail. Quota usage including any quota thresholds does not change when a file is processed by deduplication. All other FSRM quota functionality, including volume-root soft quotas and quotas on subfolders, will work normally when using deduplication.
Volumes brought under deduplication control may be empty or they may already contain data. If the volume already has data, deduplication may take an extended amount of time to process the data for the first time. This is a normal condition and should be expected. Data Deduplication processes files when the server has available resources and will automatically resume processing. The rate of processing depends on the system specifications.
Administrators can monitor the progress of deduplication by using Windows PowerShell or in Server Manager. After the initial dataset is processed, deduplication has minimal impact on the server, and it does not require manual maintenance. Data deduplication allows new writing directly to an NTFS volume. Files on the volume are evaluated periodically and processed if they meet the deduplication policy criteria.
- Web deploy on windows server 2008 r2 free
Отсутствие новостей, что если переживу эти исследования, она вернула ее вместе с кольцом, - мрачно отозвался Ричард, заметив недовольство на лице Николь? Подводная лодка вынырнула на поверхность буквально через минуту после их появления. В промежутке между схватками, Элли ощутила, что дело чересчур сложное, они не очень умны.
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