IBM will ship Informix Dynamic Server 11.5 with enhanced failover recovery features.
Less than a year after unleashing its "Cheetah" data server, IBM is
set to release a new version of its software with enhanced availability.
IDS (Informix Dynamic Sever) 11.5, code-named "Cheetah 2," builds on
the failover-recovery capabilities of its predecessor by now supporting
full read/write transactions across all nodes. The last version of IDS
only supported reads on secondary nodes, the company said.
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The latest version of IDS will be available worldwide beginning on May 6.
"When the Informix team started on the continuous availability
feature they already had a lot of experience with high availability and
replication techniques," said Bernie Spang, director of data severs for
IBM. "Likewise, the DB2/Z team had a long history of developing shared
disk solutions. These two teams came together to think about how to get
the best of both worlds. The result is the continuous availability
feature ... is now fully available in release 11.50."
Informix uses software algorithms to ensure data is kept in synch on
each of the nodes in the cluster, regardless of whether the nodes are
sharing a disk, Spang said.
From a management standpoint, IBM has added a new connection manager
to handle node failures and detect when new nodes have been added.
Though performance was not the focus of IDS 11.5, IBM added new
scale-out functionality and support for BIGINT and BIGSERIAL data types.
"Another new performance-related feature is the addition of the
VERCOL shadow columns," Spang said. "This optional column can be used
to keep track of row versions-making it much easier and quicker for
applications to determine whether a column value has changed since they
last looked at it."
IBM's database business
has been going strong of late. According to figures from analyst firm
IDC, the company's database revenues grew 13.3 percent in 2007, giving
the company a 21.3 percent share of the worldwide RDBMS market. Oracle
remains in the top spot with 44.1 percent of the market, according to
IDC. The report credited Informix Dynamic Server as playing an
increasingly significant role in the growth of IBM's database