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Accessing Storage Devices
3-4 Drive List 6-00025-01 Rev A
Tip
For optimizing performance with AMASS installed on an SGI Origin
200 or 2000 follow the instructions below:
1) Make sure the device being used for cache has a total
bandwidth of at least 26 Mbytes/sec. (a RAID-3 or RAID-5 stripe is
suggested).
2) After running the
installamass script per instructions, run
/usr/amass/sys/config_prod -o as described in Appendix D
“Optional Parameters” in
Installing and Configuring AMASS
.
2A) Set the MAXIOSZ to
4096.
2B) Enable
CFG_OPT_AIO.
3) When formatting volumes, use the volformat -b 128k
command to set a 128K byte block size. For example:
volformat
-b 128k 2.
Using an Origin 2000, running IRIX Version 6.4, and a Ciprico 6500
RimFire RAID array, ADIC tests saw an average throughput to a
DST 312 tape drive of about 12 Mbytes/sec. with file sizes ranging
from 100MB to 1GB.