HP StorageWorks Scalable File Share - Manual (Page 337)

Bandwidth variation—number of OST services and number of client nodes B–9
B.6 Bandwidth variation—number of OST services and number of
client nodes
The graph in Figure B-5 shows how the aggregate file system bandwidth varies as the number of client nodes
is increased and the file stripe count used by the client nodes also increases.
Figure B-5 Bandwidth variation—increasing numbers of client nodes of and OST services
Each client node writes its own file. These results are based on the following configuration:
• Up to four Object Storage Servers
• Four SFS20 arrays attached to each Object Storage Server
• Each array populated with twelve 250GB disks and configured as one 2TB LUN with ADG (RAID6)
redundancy
• Voltaire InfiniBand interconnect
All results are based on tests using new, empty file systems with default MDS and OST mount options and
without quotas enabled.
Bandwidth vs Clients
0
200
400
600
800
1000
1200
1400
1600
1 4 8 16 32 64 128 192
Number of clients
M
B
/sec
16 OSTs
12OSTS
8 OSTS
4 OSTs
1 OST