IBM System Storage DS Architecture and Implementation. Storage facility Configuring the DS storage for FB volumes. Front cover. IBM System Storage. DS Architecture and Implementation. Bertrand Dufrasne. Andreas Baer. Peter Klee. Danijel Paulin. This IBM® Redbooks® publication describes the concepts, architecture, and implementation of the IBM System Storage™ DS series of disk storage.

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TKLM operates on a variety of operating systems. IBM, therefore, cannot guarantee or imply reliability, serviceability, or function of these programs.

Documents Flashcards Grammar checker. Having established the physical layout, the diagram reflects ds800 layout of the array sites.

With Dynamic PAV, the assignment of addresses to volumes can be automatically managed to help the workload meet its performance impplementation and reduce overall queuing. Encrypted Solid State Drives: The following software is used on the isolated key server: This feature enables automatic dynamic data relocation capabilities.

When the copy process is complete, each CEC shuts down. Like other modern caches, DS and DS contain volatile memory used as a read and write cache and non-volatile memory used as a write cache. A business class system can now be configured with a minimum of 16 GB of architechure.

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Both are tremendously scalable, have broad server support, and virtualization capabilities. The book provides reference information to assist readers who need to plan for, install, and configure the DS and DS SDD is not available for every supported operating system.

Join an ITSO residency project and help write a book in your area of expertise, while honing your experience using leading-edge technologies. This expansion frame for the model includes enclosures for additional DDMs and additional FC adapter cards to allow a maximum configuration of 16 FC adapter cards. Subsequent expansion frames contain storage disks only. A 4-way configuration is required to support expansion frames.


The rebuild time will vary, depending on the size of the failed DDM and the workload on the array and the DA. Hardware components and architecture 63 Each disk enclosure has a redundant pair of Fibre Channel interface control cards FCIC that provides the interconnect logic for the disk access and a SES processor for enclosure services. The following sections describe the failover and failback procedures that occur between the CECs when an abnormal condition has affected one of them.

In a seven-disk array, two disks are always used for parity, and the eighth disk of the array site is needed as a spare. Equally, each DA has a path to each switch, so it also can tolerate the loss of a single path. Each disk plugs into a switch, so there is no loop break associated with the removal or replacement of a disk.

No client network connection should ever be made directly to these internal switches Chapter 3.

Read requests for data on the failed drive ought not to be affected because they can all be directed to the good RAID 1 array. Scalability is limited with this option. If an additional order of 16 DDMs were purchased, then two new disk xs8000 would be added as a pair. After the Incremental Resync, you can change the copy target destination of a copy relation without requiring a full copy of the implementaation. The power area also contains two 2-way system or three 4-way system battery backup units BBUs.

DS architecture

Furthermore, some measurements may have been estimated through extrapolation. Microsoft, Windows, and the Windows logo are trademarks of Microsoft Corporation in the United States, other countries, or both.


Therefore, the results obtained in other operating environments may vary significantly. The DS uses this smart floating technique so that the larger or higher RPM DDMs are allocated as spares, which guarantees that a spare can provide at least the same capacity and performance as the replaced drive. This possibility might be of interest to certain installations because it allows the repair of some DDM failures to be deferred until a later repair action is required.

The hardware is optimized to provide architectute performance, connectivity, and reliability. When a DDM fails and the data it contained is rebuilt onto a spare, then when the disk is replaced, the replacement disk becomes the spare. Both these features enable over-provisioning capabilities that provide more efficient usage of the storage capacity and reduced storage management requirements.

PAV is an optional feature on the DS series. The example assumes that all drives are of the same type and capacity. It allows the administrator to explore the health of the environment at an aggregate or in-depth view.

IBM System Storage DS8000 Architecture and Implementation Front cover

If you have a DS that is populated with only nearline 3TB 3. A 2-way configuration requires two battery packs. The materials at those websites are not part of the materials for this IBM product and use of those websites is at your own risk.

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