Hitachi CB 520H A1 User Manual

Figure 1-18 Memory Mapping of Logical Partitioning
• Memory for LPAR manager
The following table describes the physical memories that are used with
LPAR manager.
Server blade type
Amount of memory necessary for operating LPAR
manager
CB 520H A1/B1/B2 2048 MB
CB 520H B3 2560 MB
CB 520H B4
4096 MB (when MM Config Base is set to 2048 MB
1
)
6144 MB (when MM Config Base is set to 3072 MB
1
)
CB 520A A1 2048 MB
CB 540A A1/B1 2048 MB
CB 520X B1/B2 3072 MB
CB 520X B3 6144 MB
Notes:
1. For the value of MM Config Base, see Table 5-2 Server Blade and EFI settings on
page 5-4
• Memory for logical firmware
Logical firmware uses a part of memory space assigned to each LPAR.
Memory that logical firmware uses, in general, can be estimated from the
following calculation formulas:
– [Less than 8 GB memory assigned to LPAR]
¢
0.6% of memory assigned to LPAR + number of logical processors x
2.25 MB + 65 MB
– [8 GB or larger memory assigned to LPAR]
¢
0.25% of memory assigned to LPAR + number of logical processors x
2.25 MB + 80 MB
• Memory for a guest OS
Memory space available for a guest OS is calculated by subtracting the
amount of memory the logical firmware uses from the amount assigned
to the LPAR. This memory size is usually same as the available memory
size for a guest OS (indicated memory size in a guest OS). However, all
1-14
LPAR manager Functions
Hitachi Compute Blade 500 Series Logical partitioning manager User's Guide

Hitachi CB 520H A1 Specifications

General

Brand	Hitachi
Model	CB 520H A1
Category	Server
Language	English