Maximum capacities
If you exceed system limitations, you might experience an application outage or a system outage. Avoid these types of outages by being aware of the maximum capacities and system limitations in advance.
System limitations can be difficult to predict.
This topic collection can help you understand your system's maximum
capacity. The tables in this topic collection itemize some of the
capacity limitations and restrictions that can affect the availability
of large systems and their applications. For example, an online application
halts when the size of a file or the number of its members reaches
the size limitation. These tables list the limits or maximum values
for the current release. Some of these maximum values are different
(lower) on previous releases. There are environments or configurations
where the actual limit can be less than the stated maximum. For
example, certain high-level languages can have more restrictive limits.
These limits can range from a certain number of objects to memory
limitations. Memory limitations are measured in megabytes (MB), gigabytes
(GB), terabytes (TB), and petabytes (PB) where 1 MB equals 1 048 576
bytes, 1 GB equals 1 073 741 824 bytes, 1 TB equals 1 099 511 627
776 bytes, and 1 PB equals 1 125 899 906 842 624 bytes.
Note: The
values listed in this topic collection represent theoretical limits,
not thresholds or recommendations. Approaching some of these limits
might degrade system performance. Therefore, practical limits might
be lower, depending on system size, configuration, and application
environment.