TPS Clustering PlusTM
TPS Clustering Plus is an innovative clustering solution that delivers superior performance,
and ease of use at an affordable price. It keeps mission-critical information available
and accessible on multiple network locations, and also protects users from being
disconnected from data if one or two network servers become unavailable.
- Improves IT investment by maximizing utilization of existing hardware and software
- Enhances business continuity by preventing impact from unforeseen disaster conditions
- Deploys easily in heterogeneous server and storage environments
- Delivers better service by reducing network traffic
- Simplifies network topology and system management
TPS Clustering Plus is built on innovative Mirror File System technology whose unique
file-level operational mechanism replicates files and directories over the network
in real time. It enables:
- Active-Passive Setup Support: In contrast to conventional active-standby clustering
setups, TPS Clustering Plus supports a writable active server and readable passive
server. This eliminates the need for the standby or unused resources required by
existing active-standby clustering models. The passive server can be any UNIX or
Linux server that supports the NFSv2 or NFSv3 protocol.
- Active-Active Setup Support: TPS Clustering Plus supports active-active mode on the
network so that both active servers can read and write identical files locally and
maintain data consistency and coherency for a given file on two active servers. This
represents a giant step forward. Clients access real-time information from the closest
- Multiple Location Support: TPS Clustering Plus works not only in local clustering
environments, as most solutions do today, but over SAN, MAN, and WAN in multiple
locations. This greatly improves business continuity under disaster conditions.
- Scalability: Active and passive servers can be added on the fly or taken out for
maintenance and service as needed without affecting data availability.
- Data Integrity and Consistency Check: Data integrity and consistency checks are run
whenever a server is brought into service, to ensure it contains information identical
to its mirroring partner or partners.
- Automatic Data Recovery and Synchronization: Data recovery is performed automatically
when a server is brought back into service after a shutdown, whether expected or
- Many-to-Many Mirroring Support: Data can be replicated selectively in real time,
based on significance. Mirroring is performed on any directory within a file system,
and different directories can be mirrored to different file systems on different
servers. Granularity can be adjusted at the directory level.
Hardware: Sun SPARC Systems
Software: Solaris 8 and Solaris 9
Active server: Sun SPARC System running Solaris 8 or 9
Passive server: Any UNIX or Linux systems that support NFSv2, v3
Client system: Any UNIX or Linux clients running NFS v2, NFS v3; Windows systems
Configuration: Two servers are configured as an active-active or active-passive pair
Scalability: Three or more servers can be configured as a daisy-chain, e.g., active-passive/active-passive
New servers can be added on the fly
File System Support: UFS, NFS v2, NFS v3
File System Size: No set limit; file system sizes on replication servers can differ
Storage Requirement: Any disk or storage, such as RAID or JBOD
Network Connection: LAN: 10M, 100M, 1G Ethernet; SAN: Fiber Channel; WAN: DS3 or