COMPARISON OF SUPPLIERS OF SOLUTIONS FOR HA REQUIREMENTS |
HIGH AVAILABILITY FEATURES OPERATING SYSTEMS SUPPORTED |
HATS |
DEC |
HP |
IBM |
NCR |
Open Vision |
Qualix |
SGI |
SUN |
Veritas |
HA solutions developed internally for SOLARIS 2.x |
Yes |
DEC |
HP |
IBM |
NCR |
Yes |
Yes |
SGI |
Yes |
VERITAS |
HA solutions developed internally for SOLARIS 1.x OR SUN OS 4.1.4 |
Yes |
DEC |
HP |
IBM |
NCR |
OPEN VISION offers no solution |
QUALIX |
SGI |
SUN |
VERITAS offers no solution |
HA solutions developed internally for SOLARIS FOR INTEL |
Yes |
DEC |
HP |
IBM |
NCR |
OPEN VISION offers no solution |
QUALIX |
SGI |
SUN |
VERITAS offers no solution |
HP 9.x 10.x and soon 11.00 |
Yes |
DEC |
Yes |
IBM |
NCR |
OPEN VISION offers no solution |
Yes |
SGI |
SUN |
Yes |
SGI IRIX 5.X & 6.X |
Yes |
DEC |
HP |
IBM |
NCR |
OPEN VISION offers no solution |
QUALIX |
Yes |
SUN |
VERITAS offers no solution |
IBM AIX |
Yes |
DEC |
HP |
Yes |
NCR |
OPEN VISION offers no solution |
QUALIX |
SGI |
SUN |
VERITAS offers no solution |
Windows NT |
Yes |
Yes |
Yes |
Yes |
Yes |
OPEN VISION offers no solution |
Yes |
SGI |
SUN |
Yes |
VxWorks |
Yes |
DEC |
HP |
IBM |
NCR offers no solution |
OPEN VISION offers no solution |
QUALIX |
SGI |
SUN |
VERITAS offers no solution |
FUTURE OPERATING SYSTEMS SUPPORTED |
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LINUX |
YES |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
QNX |
YES |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
pSOS |
YES |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
LYNX |
YES |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
OTHERS ON REQUEST |
YES |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
NO |
Support full range of server platforms |
Yes |
Yes |
Yes |
Yes |
No |
Yes |
Yes |
No |
No |
Yes |
Benefit: Protects customer investments in existing systems. |
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Benefit: Allows customer to tailor configurations to specific capacity and performance needs. |
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Application Failover clusters with >2 nodes |
Yes |
Yes |
Yes |
Yes |
Yes |
No |
No |
No |
Yes |
No |
Benefit: Permits workload balancing upon failover, since applications moved from a failed node can be distributed over several surviving nodes. |
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Benefit: Permits cascading failover (ability to survive failures of multiple nodes). |
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Oracle Parallel Server (OPS) clusters with >2 nodes |
Yes |
Yes |
Yes |
Yes |
Yes |
? |
? |
Yes |
Yes |
? |
Benefit: Provides extensive performance growth (scalability),since additional nodes can be added incrementally to the cluster. |
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Oracle Parallel Server (OPS) clusters w/application failover |
Yes |
Yes |
Yes |
Yes |
Yes |
? |
? |
Yes |
Yes |
? |
Benefit: Provides high availability for non-OPS applications running on the same nodes as OPS applications. |
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Support for in-the-box LAN adapter recovery (i.e. "local failover") |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
No |
No |
Yes |
Benefit: In-the-box LAN adapter recovery takes approx. 1 second, with no interruption of application services; failover to another node takes multiple minutes for full Cluster-dB-Application recovery |
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Online rolling upgrade/maintenance |
Yes |
Yes |
Yes |
Yes |
No |
Yes |
Yes |
Yes |
No |
Yes |
Benefit: Minimizes disruption of services to end users by permitting online maintenance and upgrades of hardware and software. |
||||||||||
Dynamic Resource Reallocation |
Yes |
No |
Yes |
No |
Yes |
No |
No |
No |
No |
No |
Benefit: Process Resource Manager (PRM) provides dynamic CPU reallocation, delivering required CPU capacity and expected response times to high priority applications, application processes and workgroups. |
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Automatic detection of hardware failures |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Automatic detection of RDBMS software failures |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Automatic detection of application process failures |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
No |
Yes |
Remote HA cluster management |
Yes |
No |
Yes |
No |
No |
No |
No |
No |
No |
No |
Benefit: ClusterView allows network administrator to monitor the health of remote clusters, nodes and applications. |
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Campus clusters |
Yes |
No |
YES |
No |
No |
Yes |
Yes |
No |
Yes |
Yes |
Benefit: Allows failover to another node in another building, rather than only to a node in the same computer room. |
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Geographically Disperse Failover |
Yes |
No |
No |
Yes |
No |
No |
No |
No |
No |
No |
Benefit: Allows failover to another node at a distant location, providing recovery from disaster at any particular site. |
with additional software |
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SAME LOOK AND OPERATION ACROSS ALL OS's SUPPORTED |
Yes |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
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Turnkey solution |
Yes |
No |
No |
No |
No |
Yes |
Yes |
Yes |
No |
Yes |
Installation/Implementations/Services Support |
Yes |
Moderate |
Extensive |
Extensive |
Limited |
Yes |
Yes |
Yes |
Yes |
Yes |
Cost of Installation/Implementation/Services Support |
Low |
High |
Moderate |
Moderate |
High |
Mod/High |
Mod/High |
Moderate |
Very High |
Mod/High |
unbundled |
unbundled |
unbundled |
unbundled |
unbundled |
unbundled |
unbundled |
high |
bundled |
unbundled |
|
Software Cost |
Low |
High |
High |
High |
Very High |
Moderate |
Moderate |
Very High |
Very High |
Moderate |
SUPPORT COST |
Low |
High |
High |
High |
Very High |
Moderate |
Moderate |
Very High |
Very High |
Moderate |
OWNER SHIP COST |
Low |
High |
High |
High |
Very High |
Moderate |
Moderate |
Very High |
Very High |
Moderate |
 |
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