High Availability / Components / Application Availability / Cluster / High Availability Cluster / SteelEye LifeKeeper / Linux ARKs / Software RAID (md)

Software RAID (md)

Todays IT-environments are often high complex and sometimes there are lower hardware ressources by implementation of inexpensive solutions. In any case availability of data and application is most important. To meet the requirements solutions are needed that implement high availabilty concepts for critical business aplications and enable data consistence.

With LifeKeeper for Linux there is a solution that combines the functionality of high availability with the different options for data redundancy.

By using Linux „md“ different Software RAID Level can be built that save data by data replication. With LifeKeeper for Linux Software RAID (md) ARK LifeKeeper protected applications can be implemented in conzepts that support data redundancy, Data Replication via SAN and simple storage management.

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Key Features

Support for IA32, IA64, AMD64 and IBM Power™ Server and a variety of storage platforms
support Linux Enterprise Distributions of Novell/SuSE and Redhat
support for RAID Level 0, 1 and 10
supports active/active and active/standby configurations
no special requirements for storage configuration

Functions

SAN-based Data Replication only if hardware mirror is not practicable
Data can lie on shared-SCSI, single-path or multi-path FC SAN or on replicated volumes in LAN or WAN
cannot be implemented as an independent Recovery Kit, it depends on other LifeKeeper ressources
Recovery Kit installs two new types of ressources – md and mdcomponent
configuration of devices and disks via md0 file system as a virtual device