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IBM
Storage

IBM XIV Storage System 

The IBM XIV Storage System is a disk storage server. The system is a collection of modules, each of which is an independent computer with its own memory, interconnections, disk drives, and other subcomponents, laid out in a grid and connected together in parallel using either InfiniBand (third generation systems) or Ethernet (second generation systems) connections. Each module has an x86 CPU and runs a software platform consisting largely of a modified Linux kernel and other open source software.

IBM XIV Storage System
IBM XIV Storage System
Review

The IBM XIV Storage System is a disk storage server. The system is a collection of modules, each of which is an independent computer with its own memory, interconnections, disk drives, and other subcomponents, laid out in a grid and connected together in parallel using either InfiniBand (third generation systems) or Ethernet (second generation systems) connections. Each module has an x86 CPU and runs a software platform consisting largely of a modified Linux kernel and other open source software.

Traditional storage systems distribute a volume across a subset of disk drives in a clustered fashion. The XIV storage system distributes volumes across all modules in 1 MiB chunks (partitions) so that all of the modules' resources are used evenly. For robustness, each logical partition is stored in at least two copies on separate modules, so that if a part of a disk drive, an entire disk drive, or an entire module fails, the data is still available.

One can increase the system storage capacity by adding additional modules. When one adds a module, the system automatically redistributes previously stored data to make optimal use of its I/O capacity. Depending on the model and disk type chosen when the machine is ordered, one system can be configured for storage capacity from 27 TB to 324 TB.

The XIV software features include remote mirroring, thin provisioning, quality of service controls, LDAP authentication support, VMware support, differential, writable snapshots, online volume migration between two XIV systems and encryption protecting data at rest.

The IBM XIV management GUI is a software package that can be installed on operating systems including Microsoft Windows, Linux and Mac OS. An XIV Mobile Dashboard available for the Apple iPad and iPhone through the Apple App Store.

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