Raid identified in Linux

[Bhautik karkar]

I have configure hardware raid How to identified which raid is configure

without server restart and third party tool

Thanks & Regards,

Bhautik Karkar 

9920343224

[tid]

Hi,

You'll need to help us to help you. You need to provide a little more
information on your
hardware setup. What have you done so far? Have you read any of the
Howtos out there such
as

https://raid.wiki.kernel.org/index.php/RAID_setup

regards

Tid

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[Bryan Smith]

Hey,

It depends on your server manufacturer and raid controller, but there are a few ways that you  "might"be able to get some useful information.

You can cat /proc/scsi/scsi or cat /proc/driver/cciss/cciss[0-9]* and get results like what is below. The cciss driver is an HP/Comaq thing so if you have neither use /proc/scsi/scsi. You can sift through the output dmidecode and hope to find things there.

This server has 5 drives and they are all setup as Raid 0 in the controller. I use softraid hence all Raid 0 devices.:

root@netserv0:~# cat /proc/scsi/scsi 

Attached devices:

Host: scsi0 Channel: 00 Id: 32 Lun: 00

  Vendor: DP       Model: BACKPLANE        Rev: 1.05

  Type:   Enclosure                        ANSI  SCSI revision: 05

Host: scsi0 Channel: 02 Id: 00 Lun: 00

  Vendor: DELL     Model: PERC 6/i         Rev: 1.11

  Type:   Direct-Access                    ANSI  SCSI revision: 05

Host: scsi0 Channel: 02 Id: 01 Lun: 00

  Vendor: DELL     Model: PERC 6/i         Rev: 1.11

  Type:   Direct-Access                    ANSI  SCSI revision: 05

Host: scsi0 Channel: 02 Id: 02 Lun: 00

  Vendor: DELL     Model: PERC 6/i         Rev: 1.11

  Type:   Direct-Access                    ANSI  SCSI revision: 05

Host: scsi0 Channel: 02 Id: 03 Lun: 00

  Vendor: DELL     Model: PERC 6/i         Rev: 1.11

  Type:   Direct-Access                    ANSI  SCSI revision: 05

Host: scsi0 Channel: 02 Id: 04 Lun: 00

  Vendor: DELL     Model: PERC 6/i         Rev: 1.11

  Type:   Direct-Access                    ANSI  SCSI revision: 05

Host: scsi2 Channel: 00 Id: 00 Lun: 00

  Vendor: HL-DT-ST Model: CDRW/DVD GCCT10N Rev: A102

  Type:   CD-ROM                           ANSI  SCSI revision: 05

If you have an HP it's much easier, but Dells vary. You can install Dell's Open Manage (assuming it's a Dell) and it'll give you every scrap of information that you need to know about the server. You said no 3rd party tools which I interpret to mean that you don't want to install anything further to get the information. 

Bryan

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