Memory Allocation Diagram - IBM z13s Technical Manual

Cust. Physi Increm
Mem cal ent
(GB) GB GB
2264 2880 256
2520 3200
2776 3840
3032
3288 5120
3544
3800
4056
Figure 2-22 illustrates how the physical installed memory is allocated on a z13s server,
showing HSA memory, RAIM, customer memory, and the remaining available unused
memory that can be enabled by using LIC when required.
Addresable
Memory
Figure 2-22 Memory allocation diagram
As an example, a z13s Model N20 (one CPC drawer) that is ordered with 1496 GB of memory
has the following memory sizes:
Physical installed memory is 2560 GB: 1280 GB on Node 0 and 1280 GB on Node 1.
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IBM z13s Technical Guide
Drawer 1
Node 1DIMM loc Node 0 D IMM
/ size loc/size
MD06- MD11- MD16-
MD10 MD15 MD20
128 128 128
128 128 128
128 128 128
128 128 128
128 128 128
128 128 128
128 128 128
128 128 128
Available
Addressable
Memory
Customer
Ordered
Memory
(Usable memory
for LPARs)
HSA
HSA size = 40GB
Drawer 0 (Second drawer)
Node 1 DIMM loc
/size
MD21- MD06- MD11-
MD25 MD10 MD15
128 16 16
128 32 32
128 64 64
128 64 64
128 128 128
128 128 128
128 128 128
128 128 128
RAIM Array
(DIMM capacity)
Node 0 DIMM Dial
loc/size Max
MD16- MD21-
MD20 MD25
16 16 2264
32 32 2520
64 64 3032
64 64
128 128 4056
128 128
128 128
128 128
Installed
physical
memory