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Full Discussion: raidctl performance issues
Operating Systems Solaris raidctl performance issues Post 302322463 by incredible on Wednesday 3rd of June 2009 11:12:18 PM
Old 06-04-2009
Quote:
Originally Posted by skamal4u
sometime when one drive fails we dont face any issue & we replace the drive with out any problem . but sometimes when one drive fails , system becomes unresponsive and doesnot allow us to login
Why is that so? Definitely the systems you have at large are of different models and architecture.
You must check if there's any firmware bug with with and if your's is updated to the latest.
Slot 0 and slot 1 can be used for the OS disks.you can even RAID slot 0 with 2 or 3. It doesn't really matter as long as you raidctl the correct controller/target

-----Post Update-----

And how do you usually confirm if a drive fails, in a h/w raid?
 

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MLXCTL(8)						    BSD System Manager's Manual 						 MLXCTL(8)

NAME
mlxctl -- Mylex DAC960 family management utility SYNOPSIS
mlxctl [-f dev] [-v] [-a] status [drive] [...] mlxctl [-f dev] [-a] detach [drive] [...] mlxctl [-f dev] [-a] check [drive] [...] mlxctl [-f dev] rebuild channel:target mlxctl [-f dev] cstatus mlxctl [-f dev] rescan mlxctl [-f dev] config DESCRIPTION
The mlxctl utility performs status monitoring and management functions for Mylex DAC960 RAID controllers and attached devices. The following options are available: -a Apply the action to all drives attached to the controller. -f dev Specify the control device to use. The default is /dev/mlx0. -v Increased verbosity. The following commands are available: cstatus Display the controller's current status. status Display the status of the specified drives. This command returns 0 if all drives tested are online, 1 if one or more drives are critical and 2 if one or more are offline. rescan Re-scan the logical drive table, and attach or detach devices from the system as necessary. detach Detach the specified drives. Drives must be unmounted and unopened for this command to succeed. check Initiate a consistency check and repair pass on a drive that provides redundancy (e.g., RAID1 or RAID5). This command returns imme- diately. The status command can be used to monitor the progress of the check. rebuild Rebuild onto the specified physical drive. Note that there can be only one running rebuild operation per controller at any given time. This command returns immediately. The cstatus command can be used to monitor the progress of the rebuild. config Write the current system drive configuration to stdout. EXAMPLES
Display the status of drive ld3 attached to the controller mlx1: mlxctl -f /dev/mlx1 -v status ld3 SEE ALSO
ld(4), mlx(4) HISTORY
The mlxctl command first appeared in NetBSD 1.5.3, and was based on the mlxcontrol utility found in FreeBSD. BUGS
Modifying drive configuration is not yet supported. Some commands do not work with older firmware revisions. Error log extraction is not yet supported. BSD
April 10, 2000 BSD
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