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тАО06-05-2003 06:34 PM
тАО06-05-2003 06:34 PM
education needed
Hi Guys
I see there are a few kicking around so this is probably the best time to ask this type of question
I have a server to decomission that currently has 6 sc10 disk units connected to an fc60 controller.
In total there are 60 disks. Before I disconnect them all I need to get a little educated.
At the moment I can only see 24 including 2 universal Xport
I have checked power is on all the disks and each tray is set to its own unique id 0-5 inclusive
Why can't I see all the disks in the array ?
Should an ioscan not detect all the disks ?
Any pointers in what to look for would be great
Thanks in advance
Steve
I see there are a few kicking around so this is probably the best time to ask this type of question
I have a server to decomission that currently has 6 sc10 disk units connected to an fc60 controller.
In total there are 60 disks. Before I disconnect them all I need to get a little educated.
At the moment I can only see 24 including 2 universal Xport
I have checked power is on all the disks and each tray is set to its own unique id 0-5 inclusive
Why can't I see all the disks in the array ?
Should an ioscan not detect all the disks ?
Any pointers in what to look for would be great
Thanks in advance
Steve
take your time and think things through
3 REPLIES 3
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тАО06-05-2003 07:01 PM
тАО06-05-2003 07:01 PM
Re: education needed
Hi
When setting up the devices are they set at the controller level and zoned similar to SAN storage so that the host can only see assigned disks ?
Steve
When setting up the devices are they set at the controller level and zoned similar to SAN storage so that the host can only see assigned disks ?
Steve
take your time and think things through
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тАО06-05-2003 09:15 PM
тАО06-05-2003 09:15 PM
Re: education needed
Well
I'm confused. This server has 2 fibre connections to the fc60. I went through disconnecting the sc10 units checking to see which devices became NO_HW after getting the server to rescan the hardware. I got no change what so ever. After disconnecting all the paths to the disks from the controller the server still thought it could see all the disks, only until I went into a dirctory did the server hang.
With all the paths disconnected I rebooted the server. Upon return I could see most of the hardware NO_HW , the server however still thought it had some of the disks!!! (CLAIMED) (confusing)
I disconnected the fibre cables out of the back of the server, ioscan -fnC disk , the server lost all disk (NO_HW)
Why isn't there any consistency with regards to what the server can and can't see during periods of testing ?
Steve
I'm confused. This server has 2 fibre connections to the fc60. I went through disconnecting the sc10 units checking to see which devices became NO_HW after getting the server to rescan the hardware. I got no change what so ever. After disconnecting all the paths to the disks from the controller the server still thought it could see all the disks, only until I went into a dirctory did the server hang.
With all the paths disconnected I rebooted the server. Upon return I could see most of the hardware NO_HW , the server however still thought it had some of the disks!!! (CLAIMED) (confusing)
I disconnected the fibre cables out of the back of the server, ioscan -fnC disk , the server lost all disk (NO_HW)
Why isn't there any consistency with regards to what the server can and can't see during periods of testing ?
Steve
take your time and think things through
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тАО06-05-2003 10:42 PM
тАО06-05-2003 10:42 PM
Re: education needed
Hi,
did oyu do any access to the disk when you pull them off ?
If there is no data going throught the channel, ioscan won't recognize the failed (NO_HW) disks.
I think this can be the explanation to the no_hw disks..
For the number of luns:
i don't remember exactly, but the sc10 might support lun aggregation, so you have 24 lun striped across 60 disks.
How are they connected ? to a fiber switch ? in this case zoning may be the answer.
HTH,
Massimo
did oyu do any access to the disk when you pull them off ?
If there is no data going throught the channel, ioscan won't recognize the failed (NO_HW) disks.
I think this can be the explanation to the no_hw disks..
For the number of luns:
i don't remember exactly, but the sc10 might support lun aggregation, so you have 24 lun striped across 60 disks.
How are they connected ? to a fiber switch ? in this case zoning may be the answer.
HTH,
Massimo
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