SSA Drive failure 1

[Mag0007]

How can I verify what drawer a drive exists on, when a SSA drive is failed?

I am running ssa_err to get this failed drive...

Also, I noticed there are no red lights on the drives, however I see many LEDs on the drawers.

 

[p5wizard]

What type of drawer are you talking about? On a T40 or D40 the AIX location reflect the actual position a drive is in.

First you need to find out which pdisk is the SSA physical disk for your hdisk (SSA logical disk), then with the connwhere attribute, find the pdisk and its location:

# odmget -q name=hdisk100 CuDv 

CuDv:
        name = "hdisk100"
        status = 1
        chgstatus = 2
        ddins = "ssadisk"
        location = "40-58-L"
        parent = "ssar"
        connwhere = "0040AA1E489C00D"
        PdDvLn = "disk/ssar/hdisk"

# odmget -q "connwhere=0040AA1E489C00D" CuDv

CuDv:
        name = "pdisk17"
        status = 1
        chgstatus = 2
        ddins = "ssadisk"
        location = "40-58-DRW4-16-P"
        parent = "ssar"
        connwhere = "0040AA1E489C00D"
        PdDvLn = "pdisk/ssar/scsd"

CuDv:
        name = "hdisk100"
        status = 1
        chgstatus = 2
        ddins = "ssadisk"
        location = "40-58-L"
        parent = "ssar"
        connwhere = "0040AA1E489C00D"
        PdDvLn = "disk/ssar/hdisk"

This disk is in drawer "DRW4" in disk location number 16

You can give a D40 or T40 a 4-character name, which is also displayed on the drawer's operator panel.

On a 010 or 020 (older type) drawer, you have to find the disk by looking at the ID numbers (middle part of connwhere attribute without the leading 00 and the trailing 00D I think - not at the drawer right now) yourself or by "identifying" the disk which turns on the yellow light on the disk:

ssaidentify -l pdisk17 -y

You turn the light back off with:

ssaidentify -l pdisk17 -n



HTH,

p5wizard

 

[Mag0007]

Very good post p5wizard! I think you answered my questions.

I have some 7133 drawers (white ones), and a couple of D40 (black ones).

But I will try to do this...

Thanks!

 

[p5wizard]

D40 existed in off-white also...

all SSA drawers are 7133 (type number)

model 7133-010 is off-white with a dark plastic window that shows the disk LEDs

model 7133-020 is off-white without the window

model 7133-D40 is black or white with an operator panel on the left that shows the drawer ID and disk activity in 2 rows of 8 LEDs

model 7133-T40 is black (or white? not sure) and is essentially a D40 in a deskside tower - hence the T40

I believe 010 and 020 also once existed in a deskside configuration.

All plain SSA hardware is WFM. I think ESS eightpacks (an ESS eightpack is half an SSA drawer without the POWER and FAN modules) are still available.



HTH,

p5wizard

 

[Mag0007]

Thanks for the good post again! IMO, You personally have been 10x more helpful then IBM!

Will it hurt the system if I turn off and turn on the hdisk light to indentify? Because the system is running fine and I really don't want ANY outages.

 

[p5wizard]

Ssaidentify only turns the disk light on and off, nothing more - you can run it from within diag if that makes you feel more secure. It's in diag -> Task Selection -> SSA Service Aids - Link Verification -> Choose an adapter -> choose a disk and press enter to identify.

It is even better to run it from diag, because then you can't forget to unidentify a disk - by leaving the Link Verification screen you automatically unidentify whatever disk is identified. Not that would cause anything, but it sometimes happens that I come across an SSA disk with its yellow light burning and it was just me that forgot to turn it off last week or so...


HTH,

p5wizard

 

[Germo]

another good command I use when finding out what pdiak links to what hdisk is

ssaxlate -l pdisk30

change pdisk30 to what ever pdisk you wish to check, it also works the other way around

ssaxlate -l hdisk20