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HP StorageWorks Scalable File Share User Manual

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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