scsiscan not in vmkernel.log, can't find device information. Trying to get vendor storage info to change iops with esxcli.

I am trying to run the following command when SSH'd into my esxi 5.5 host as root:
grep -i scsiscan /var/log/vmkernel.log
Nothing is returned, however.
Apparently this is supposed to return the vendor/storage information of the storage device the hosts are connected to, so that I can use it for running esxcli for adding a rule to change the iops value from 1000 to 1.
Anyone know why this wouldn't be showing, or if there's another way to find that info?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
have you tried ScsiScan
garryshapeAuthor Commented:
I have tried that with and without "-i" in the parameter (for ignore case) but still nothing.
I'm wondering if this gets written to the log only every once in a while and maybe it got overwritten/
garryshapeAuthor Commented:
I've checked the log from vSphere client as well, it only shows the past 1 day
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
logs get rotated, see the gz logs
garryshapeAuthor Commented:
I found another command to retrieve:  
esxcfg-scsidevs -l

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