IBM Z10 EC - Manual (Page 43)

In today’s on demand environment, downtime is not only
unwelcome—it’s costly. If your applications aren’t consis-
tently available, your business suffers. The damage can
extend well beyond the fi nancial realm into key areas of
customer loyalty, market competitiveness and regulatory
compliance. High on the list of critical business require-
ments today is the need to keep applications up and run-
ning in the event of planned or unplanned disruptions to
your systems.
While some servers are thought of offering weeks or even
months of up time, System z thinks of this in terms of
achieving years. The z10 EC continues our commitment
to deliver improvements in hardware Reliability, Availability
and Serviceability (RAS) with every new System z server.
They include microcode driver enhancements, dynamic
segment sparing for memory and fi xed HSA. The z10 EC
is a server that can help keep applications up and running
in the event of planned or unplanned disruptions to the
system.
The System z10 EC is designed to deliver industry lead-
ing reliability, availability and security our customers have
come to expect from System z servers. System z10 EC
RAS is designed to reduce all sources of outages by
reducing unscheduled, scheduled and planned outages.
Planned outages are further designed to be reduced
with the introduction of concurrent I/O drawer add and
eliminating pre-planning requirements. These features are
designed to reduce the need for a Power-on-Reset (POR)
and help eliminate the need to deactivate/activate/IPL a
logical partition.
RAS Design Focus
High Availability (HA) – The attribute of a system
designed to provide service during defi ned peri-
ods, at acceptable or agreed upon levels and masks
UNPLANNED OUTAGES from end users. It employs fault
tolerance, automated failure detection, recovery, bypass
reconfi guration, testing, problem and change manage-
ment.
Continuous Operations (CO) – The attribute of a system
designed to continuously operate and mask PLANNED
OUTAGES from end users. It employs non-disruptive hard-
ware and software changes, non-disruptive confi guration
and software coexistence.
Continuous Availability (CA) – The attribute of a system
designed to deliver non-disruptive service to the end user
7 days a week, 24 HOURS A DAY (there are no planned or
unplanned outages). It includes the ability to recover from
a site disaster by switching computing to a second site.
Reliability, Availability, and Serviceability
(RAS)
43