Before you begin this procedure, ensure that the following prerequisites are met: 

GLYPH<SM590000> IBM Spectrum Scale is installed on each of the IBM Spectrum Archive EE nodes. 

GLYPH<SM590000> The IBM Spectrum Scale cluster is created and all of the IBM Spectrum Archive EE nodes belong to the cluster. 

IBM Spectrum Archive EE requires space for the file metadata, which is stored in the LTFS metadata directory. The metadata directory can be stored in its own GPFS file system, or it can share the GPFS file system that is being space-managed with IBM Spectrum Archive EE. 

The file system that is used for the LTFS metadata directory must be created and mounted before the IBM Spectrum Archive EE configuration is performed. The following requirements apply to the GPFS file system that is used for the LTFS metadata directory: 

GLYPH<SM590000> The file system must be mounted and accessible from all of the IBM Spectrum Archive EE nodes in the cluster. 

GLYPH<SM590000> The GPFS file system (or systems) that are space-managed with IBM Spectrum Archive EE must be DMAPI enabled. 

To create and mount the GPFS file system, complete the following steps: 

1. Create a network shared disk (NSD), if necessary, by running the following command. It is possible to share an existing NSD with another GPFS file system. 

# mmcrnsd -F nsd.list -v no <<nsd.list>> %nsd: device=/dev/dm-3 nsd=nsd00 servers=ltfs01, ltfs02, ltfs03, ltfs04 usage=dataAndMetadata 

2. Start the GPFS service (if it is not started already) by running the following command: 

# mmstartup -a 

3. Create the GPFS file system by running the following command. For more information about the file system name and mount point, see 6.1.1, “Configuration worksheet tables” on page 96. 

# mmcrfs /dev/gpfs nsd00 -z yes -T /ibm/glues 

In this example, /dev/gpfs  is the file system name and /ibm/glues  is the mount point. For a separate file system that is used only for the LTFS metadata directory, you do not need to use the -z  option. Generally, if a GPFS file system is not intended to be IBM Spectrum Archive EE managed, it should not be DMAPI-enabled, so the -z  option should not be specified. The preferred configuration is to have one file system with DMAPI-enabled. 

4. Mount the GPFS file system by running the following command: 

# mmmount gpfs -a 

For more information about the mmmount  command, see either of the following resources: 

GLYPH<SM590000> General Parallel File System Version 4 Release 1.0.4 Advanced Administration Guide , SC23-7032-01 

GLYPH<SM590000> IBM Spectrum Scale: Administration Guide , which is available at this website: 

https://www.ibm.com/support/knowledgecenter/STXKQY 

