186 IBM Eserver p5 590 and 595 System Handbookdynamic LPAR, memory resources. Logical memory blocks are also discussed in5.2.4, “Memory configuration rules” on page 123.Figure 7-14 ASMI menu: Logical Memory Block Size7.4 Firmware updatesIBM will periodically release firmware updates for the p5-590 and p5-595. Theseupdates provide changes to your software, licensed internal code (LIC), ormachine code that fix known problems, add new function, and keep your serveror Hardware Management Console operating efficiently. For example, you mightinstall fixes for your operating system in the form of a program temporary fix(PTF). Or, you might install a server firmware fix with code changes that areneeded to support new hardware or new functions of the existing hardware.A good fix strategy is an important part of maintaining and managing your server.You should install fixes on a regular basis if you have a dynamic environment thatchanges frequently. If you have a stable environment, you do not have to installfixes as frequently. However, you should consider installing fixes whenever youmake any major software or hardware changes in your environment.