Advanced File Storage Area on Spectrum Scale
IBM Spectrum Scale™ is a scalable, high-performance data and file management solution that is based upon General Parallel File System (GPFS™).
For the single ECM node study, XFS was replaced by the IBM Spectrum Scale filesystem at a later stage. This enabled a comparison to be made between the capabilities of IBM Spectrum Scale and a non-clustered high-performance filesystem.
The following example shows how the Spectrum Scale File Storage Area is populated with the data
that is shown in Table 1.
# df -hT Filesystem Type Size Used Avail Use% Mounted on /dev/dasda1 ext3 20G 15G 4.2G 78% / ... /dev/FSData gpfs 600G 337G 264G 57% /data/FSData
Note: The ECM node runs FNP8 CPE and the ICN in the same Linux™ node. Therefore, this node is the only node in the Spectrum Scale cluster for this part of the study. The follow-on Part 2 white paper addresses the multi-node Spectrum Scale cluster scale-out, either as ‘Shared Disk’ or ‘Network Shared Disk’ model.
This example shows a Spectrum Scale cluster with single ECM
node:
# mmlscluster GPFS cluster information ======================== GPFS cluster name: ECM_1_node GPFS cluster id: 714383681xxxxxxxxx GPFS UID domain: ECM_1_node Remote shell command: /usr/bin/ssh Remote file copy command: /usr/bin/scp Repository type: CCR Node Daemon node name IP address Admin node name Designation --------------------------------------------------------------------- 1 ECMnod1 xx.xxx.xx.xxx ECMnod1 quorum-manager
This example shows six 100 GiB FCP/SCSI disks for the File Storage Area that are directly
attached to the ECM
node:
# mmlsnsd File system Disk name NSD servers --------------------------------------------------------------------------- FSData nsd14cb (directly attached) FSData nsd15cb (directly attached) FSData nsd14cc (directly attached) FSData nsd15cc (directly attached) FSData nsd14cd (directly attached) FSData nsd15cd (directly attached)