Re: SSD Analyzer Tool

You don't "have" to, but if you don't want any changes on your files then
save them to tape and remove them from the system. :-)

When you run CHGPF you do not have to provide DDS. CHGPF can be used for
more than just modifying the DDS and getting the change into the physical
file. Sample:
CHGPF FILE(ERPLXF/IIM) UNIT(*SSD)
followed by
STRASPBAL TYPE(*MP) ASP(1) TIMLMT(*NOMAX) PRIORITY(*MEDIUM) SUBTYPE(*SSD)

Again, there are other alternatives for moving your data to SSD's. For
example, if you do not care what data gets there but you want the system
to try and figure it out (unlike us, who wanted a fast month end) then you
could use
TRCASPBAL SET(*ON) ASP(1) TIMLMT(240)
After that completes:
STRASPBAL TYPE(*HSM) ASP(1) TIMLMT(*NOMAX) PRIORITY(*MEDIUM) SUBTYPE(*SSD)

Another alternative is to create a separate ASP for this and stick the
library into that. Keep in mind that cross ASP LF's ain't going to
happen.

The following is a little dated and some of the newer capabilities (like
type *mp) are only hinted at in it.
http://www-03.ibm.com/systems/resources/ssd_ibmi.pdf
But it is still a good read.

This is a newer read but doesn't cover some nice tips, like don't put
journal receivers on SSD (like the previous link)
http://www-05.ibm.com/se/news/events/power7/pdf/Solid_State_Drives.pdf
as it mentions, 7.1 added numerous features. I'd love some details on
slide # 15.

I think there's a new option in 7.1 to automatically do some of the work
of the TRCASPBAL combo under the covers, on an ongoing basis.

Scan this announcement letter for SSD and you can see why 7.1 is a better
choice to be running SSD's on.
http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?subtype=ca&infotype=an&appname=iSource&supplier=897&letternum=ENUS210-077

Other light reading:
http://www-03.ibm.com/systems/resources/systems_power_software_i_perfmgmt_pcrm_oct2011.pdf
http://www-03.ibm.com/systems/resources/ssd_ibmi.pdf
http://www.redbooks.ibm.com/redpieces/pdfs/sg247858.pdf






Rob Berendt