2.1.5 Required memory

The following table shows the memory required when this software is operated in the following environment:

No.	Memory (in MB)	Operation
1	392.1	A cluster system is operated under the following conditions: One cluster application is registered in a cluster system. Note that 11.5 MB is required for each additional cluster application. Web-Based Admin View is operated in two-tier model. GDS shared class operation. GLS takeover IP address service registration. In addition to the aforementioned user memory, 2.0 MB of kernel memory will be allocated per CPU by vmalloc.
2	38.0	After a GFS shared file system is set up.
3	145.0	When one GFS shared file system is activated. If multiple file systems are activated, 145.0 MB is required for each file system. 2.0 MB out of 145.0 MB is allocated in virtual address space by vmalloc. Overestimate the amount of memory because memory usage may vary according to the file system load and cache tuning.
4	200.0	When a cluster application with following resources and the GDS Management View have been started: A GDS shared class including a netmirror volume. A filesystem on a netmirror volume.
5	Required memory for resources	Estimate the memory requirement according to the resources to be registered in the cluster application. For details, see "2.1.5.1 Required memory for resources"

2.1.5.1 Required memory for resources

2.1.5.1.1 Red Hat Enterprise Linux 7 (for Intel64)

No.	Resources	Memory
1	Cmdline resources	22 MB x ((number of resources + 1) / 2 (*))
2	Fsystem resources	22 MB x (number of resources / 5 (*))
3	RemoteFileSystems resources	22 MB x (number of resources / 3 (*))
4	Gds resources	35 MB + (8 MB x number of resources)
5	Gls resources	22 MB + (8 MB x number of resources)
6	Takeover network resources	24 MB x (number of resources / 10 (*))
7	Procedure resources	34 MB x number of resources
8	NFS resources	22 MB x (number of resources / 10 (*))

(*) Round up

2.1.5.1.2 Red Hat Enterprise Linux 8 (for Intel64)

No.	Resources	Memory
1	Cmdline resources	23 MB x ((number of resources + 1) / 2 (*))
2	Fsystem resources	24 MB x (number of resources / 5 (*))
3	RemoteFileSystems resources	24 MB x (number of resources / 3 (*))
4	Gds resources	45 MB + (12 MB x number of resources)
5	Gls resources	40 MB + (10 MB x number of resources)
6	Takeover network resources	25 MB x (number of resources / 10 (*))
7	Procedure resources	40 MB x number of resources
8	NFS resources	23 MB x (number of resources / 10 (*))

(*) Round up