HP StorageWorks Scalable File Share - Manual (Page 331)

I/O performance B–3
SFS20 storage — 250GB disks
Table B-2 provides details of expected performance figures for one Object Storage Server in systems using
SFS20 storage. These figures are based on the following configuration:
• SFS20 array firmware at Version 1.92.
• One 2TB LUN per disk group (per array).
• Infiniband interconnect for Lustre figures.
• For ADG (also called RAID6) redundancy configurations:
One disk group consisting of eleven 250GB disks and a single spare disk.
• For RAID5 redundancy configurations:
One disk group consisting of ten 250GB disks and a single spare disk.
In Table B-2, the second set of figures (2 LUNs) for each entry provides the data for a scenario where two
SFS20 arrays are simultaneously accessed.
Performance in systems using SFS20 storage may vary depending on the size of disk used in the array.
SFS20 storage — 5000GB disks
Table B-3 shows the Lustre performance of multiple clients to one Object Storage Server using a single
SFS20 array with 500GB disks.
These figures are based on the following configuration:
• One disk group of eleven 500GB disks and one spare disk.
• Two 2TB LUNs per disk group (that is, two 2TB LUNs per array).
This is the recommended configuration for 500GB disks, as described in Chapter 5 of the
HP StorageWorks Scalable File Share System Installation and Upgrade Guide.
Table B-2 Performance figures — SFS20 storage
Number of
arrays
Number of
LUNs accessed
Write (MB/sec) Read (MB/sec)
ADG RAID5 ADG RAID5
Raw Performance 1 1 90 130 200 200
2 2 1
1. One LUN per array.
200 250 390 390
Single-client Lustre
performance
(one client,
ost_perf_check
command)
1 1 90 130 240 240
2 2 1 190 250 380 370
Multi-client Lustre
performance
(eight clients,
IOR
utility)
1 1 90 125 200 190
2 2 1 185 250 380 370
Table B-3 Multi-client Lustre performance of 500GB disks
Number of arrays Number of LUNs
accessed
Number of clients Write (MB/sec) Read (MB/sec)
1 2 8 60 145