IBM System Storage DS Architecture and Implementation. Front Cover. IBM Redbooks, Bertrand Dufrasne. IBM, International Technical Support. Front cover IBM System Storage DS Architecture and Implementation High Density Storage Enclosure 8 Gbps Host Adapters 4-Port Device Adapter. Front cover IBM System Storage DS Architecture and Implementation Learn the DS and DS new and common features Plan, install, and.

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For more information about how AIX V6.

This feature can dramatically improve sequential performance, thereby reducing times for backup, processing stoeage business intelligence, and streaming media. The DS series improves the cost structure of operations and lowers energy consumption through a tiered storage environment. These sizes are not multiples of 1 GB, and hence, depending on the model chosen, some space is wasted.

This ensures that all data in nonvolatile storage, known as modified data, is destaged properly to disk prior to power down. Additional information about this topic is available in 3. Disk enclosure power supply DS The disk enclosure power supply unit provides 5V and 12V power for the DDMs, and houses the cooling fans for the disk enclosure. The enclosure is shown in Figure Each enclosure also has its own cooling fans.

In a maximum configuration, the first expansion frame can hold disk drives. This enables the service processor to take appropriate action. Recovery routines could include dynamic deallocation of potentially failing components.

A single PPS is capable of powering the frame by itself.

Architecture and Implementation Figure DS disk enclosure DS disk enclosures Each DS frame contains a maximum of either 10, 14, or 20 disk enclosures, depending on whether it is a base or expansion frame.

You can also discover more about PCI Express at the following website: Each disk plugs into a switch, so there is no loop break associated with the removal or replacement of a disk. The book provides reference information to assist readers who need to plan for, install, and configure the DS systems.


Figure is an attempt to show frame variations that are possible with the DS The Expansion Unit 95E can only be attached to the 4-way processor complex. This allows for the creation of very large storage area networks SANs. A storage complex can, and usually does, consist of simply a single DS storage unit base frame plus additional installed expansion frames.

All memory installed on any processor complex is accessible to all processors in that complex. Fibre Channel distances There are two types of host adapter cards you can select: Disk enclosure power and cooling The storage enclosures have two power supply units for each storage enclosure. A current list of IBM trademarks is available on the Web at http: Copy Services are now available for Thin Provisioning.

IBM DS8880 Architecture and Implementation (Release 8.3)

A storage enclosure can have up to 24 small form factor SFF 2. It can double the throughput for random write workloads.

See Figure for an illustration of the operator panel. These cards are present only in the base frame. The IBM DS family now offers business-critical, all-flash, and hybrid data systems that span a wide range of price points: Write operations will not be affected.

IBM System Storage Ds8800 Architecture and Implementation

Virtualization concepts Chapter 5. The DDMs are not protected from power loss unless the extended power line disturbance ePLD feature has been installed in the system. The repository is an object within an Extent Pool. In previous AIX versions, kernel errors always resulted in an unexpected system halt. These two servers share the load of receiving and moving data between the attached hosts and the disk arrays.


However, before the actual destage and ad the beginning of the failover: A significant benefit of the DS series is the ability to add DDMs without disruption for maintenance.

The FSP can monitor the operation of the firmware during the boot process, and it can monitor the operating system for loss of control.

IBM System Storage DS Architecture and Implementation | IBM Redbooks

Intel, Intel logo, Intel Inside logo, and Intel Centrino logo are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. Hardware components and architecture 43 3. Therefore, it allows the creation of devices and makes them available as soon as the command completes. The CECs have two areas of their primary memory used for holding host data: The PPSs can be replaced concurrently.

The current IKS is still supported to address the standing requirement for an isolated key server.

IBM System Storage DS Architecture and Implementation Front cover

It is designed to avoid single points of failure. The Install Sequence line shown in Figure on page 59 indicates the order in which host adapter ibn must be installed. This feature helps prevent accidental memory overwrites that could cause critical applications to crash.

Adding more drives will not add DA pairs. It is known as an on-battery condition. Architecture and Implementation 1 Chapter 1. Hardware components and architecture 41 3. DS architechure upgrades and CoD. It is referred to as Call Home for service.