mpt-status frequently asked questions (FAQ)
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Eventually this should turn into a FAQ document, but right now there are not
too many questions, so I just put some emails into it.

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> Let's take examples from the README.
> <!--- Example #1 -->
> ioc0 vol 0 type IM, 2 phy, 68 GB, flags ENABLED, state OPTIMAL
> ioc0 phy 0 IBM-ESXS MAS3735NC     FN C901, 68 GB, state ONLINE
> ioc0 phy 1 IBM-ESXS ST373453LC    FN B85D, 68 GB, state ONLINE

This is the output of the old program, I've removed this output from the README in the upcoming 1.1.5 version.

> <!--- Example #2 -->
> SR2400:~# ./mpt-status -i 0
> ioc0 vol_id 0 type IS, 0 phy, 0 GB, state OPTIMAL, flags NONE

This means that you do not have your disks in slot 0 of your SCSI controller.

> <!--- Example #3 -->
> SR2400:~# ./mpt-status -i 1
> ioc0 vol_id 1 type IM, 2 phy, 68 GB, state OPTIMAL, flags ENABLED
> ioc0 phy 0 scsi_id 1 SEAGATE  ST373207LC       0003, 68 GB, state ONLINE, flags NONE
> ioc0 phy 1 scsi_id 3 SEAGATE  ST373207LC       0003, 68 GB, state ONLINE, flags NONE

Excellent. The next version of mpt-status should guide you and detect the slot id (you have id 1) automatically.

> Here are my questions.
> 1) Could you tell me from example #1, #2 and #3 where can you see the Raid Level of each hard disk ?

The raid level is not visible, would you like to get this information as well? Or do you want to extract the health state of each disk?

> 2) Could you give the meaning of these abreviations ?

Maybe:

> FN=?

This is the vendor's product revision level of the hard disk. Taking your examples #1 and #3, we gather following information:

#1: ioc0 phy 0 IBM-ESXS MAS3735NC     FN C901, 68 GB, state ONLINE
#3: ioc0 phy 0 scsi_id 1 SEAGATE  ST373207LC       0003, 68 GB, state ONLINE, flags NONE

IBM-ESXS: the vendor id
SEAGATE: the vendor id

MAS3735NC: the product id
ST373207LC: the product id

FN C901: the product revision level
0003: the product revision level

So, as you can see, FN is part of the product revision level of this IBM hard disk.

> IS=?

Integrated Striping (RAID 0)

> IM=?

Integrated Mirroring (RAID 1)

and there is also IME, which means Integrated Mirroring + Enhanced (RAID 1E).
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