{"id":2413,"date":"2015-11-03T11:03:12","date_gmt":"2015-11-03T11:03:12","guid":{"rendered":"https:\/\/unihost.com\/help\/?p=2413"},"modified":"2025-05-21T16:36:30","modified_gmt":"2025-05-21T13:36:30","slug":"adaptec-raid-controller-how-to-create","status":"publish","type":"post","link":"https:\/\/unihost.com\/help\/adaptec-raid-controller-how-to-create\/","title":{"rendered":"Adaptec RAID controller: how to create it?"},"content":{"rendered":"

Adaptec RAID controller <\/span><\/h2>\n

The arcconf<\/b> tool is used for managing the controller on the command-line interface. <\/span><\/p>\n

asm<\/b> (Adaptec Storage Manager) is a graphical tool. <\/span><\/p>\n

How to check the status of the hardware-based RAID <\/span><\/h2>\n

To check the status of the Adaptec RAID Controller, the Adaptec command-line tool arcconf<\/b> must be installed.<\/span><\/p>\n

The actual status of the RAID may be obtained by using the following command: <\/span><\/p>\n

arcconf GETCONFIG 1 LD<\/span><\/pre>\n
Example for RAID 1:<\/span><\/p>\n
Controllers found: 1\n----------------------------------------------------------------------\nLogical device information\n----------------------------------------------------------------------\nLogical device number 0\n   Logical device name                      :\n   RAID level                               : 1\n   Status of logical device                 : Optimal\n   Size                                     : 714742 MB\n   Read-cache mode                          : Enabled\n   MaxIQ preferred cache setting            : Enabled\n   MaxIQ cache setting                      : Disabled\n   Write-cache mode                         : Enabled (write-back)\n   Write-cache setting                      : Enabled (write-back)\n   Partitioned                              : Yes\n   Protected by Hot-Spare                   : No\n   Bootable                                 : Yes\n   Failed stripes                           : No\n   Power settings                           : Disabled\n   --------------------------------------------------------\n   Logical device segment information\n   --------------------------------------------------------\n   Segment 0                                : Present (0,0) S13UJ1DPB05048\n   Segment 1                                : Present (0,1) S13UJ1DQ201027<\/span><\/pre>\n
The status of the drives may be obtained by using the following command: <\/span><\/p>\n
arcconf GETCONFIG 1 PD<\/span><\/pre>\n
As this command also generates a quantity of useless information, it is advisable to filter the output, eg. using: <\/span><\/p>\n
arcconf getconfig 1 pd|egrep \"Device #|State\\>|Reported Location|Reported Channel|S.M.A.R.T. warnings\"<\/span><\/pre>\n
How to set up a hardware-based RAID?<\/span><\/h2>\n
Regardless of whether changes to the mode of an existing RAID are required or if a new RAID (after installing a controller) is to be set up, the first thing to do is to delete the drives from their logical drives:<\/span><\/p>\n
arcconf DELETE <Controller#> LOGICALDRIVE <ld#><\/span><\/pre>\n
For example:<\/span><\/p>\n
arcconf DELETE 1 LOGICALDRIVE 0<\/span><\/pre>\n
or (for all discs):<\/span><\/p>\n
arcconf DELETE 1 LOGICALDRIVE ALL<\/span><\/pre>\n
Now it is possible to set up a new RAID:<\/span><\/p>\n
arcconf CREATE <Controller#> LOGICALDRIVE [Options] <Size> <RAID#> <Channel# ID#> [Channel# ID#]<\/span><\/pre>\n
RAID 0 setup (maximum size, drives on Channel 0, Port 0 and 1, no confirmation):<\/span><\/p>\n
arcconf CREATE 1 LOGICALDRIVE MAX 0 0 0 0 1 noprompt<\/span><\/pre>\n
RAID 1 setup (maximum size, drives on Channel 0, Port 0 and 1, no confirmation):<\/span><\/p>\n
arcconf CREATE 1 LOGICALDRIVE MAX 1 0 0 0 1 noprompt<\/span><\/pre>\n
RAID 5 setup (maximum size, drives on Channel 0, Port 0 and 1, no confirmation): <\/span><\/p>\n
arcconf CREATE 1 LOGICALDRIVE MAX 5 0 0 0 1 0 2 noprompt<\/span><\/pre>\n
RAID 10 setup (maximum size, drives on Channel 0, Port 0 and 1, no confirmation): <\/span><\/p>\n
arcconf CREATE 1 LOGICALDRIVE MAX 10 0 0 0 1 0 2 0 3 noprompt<\/span><\/pre>\n
JBOD (single drive on Channel 0, Port 2): <\/span><\/p>\n
arcconf CREATE 1 JBOD 0 2 noprompt<\/span><\/pre>\n
How to start a REBUILD using arcconf with a DEGRADED RAID <\/span><\/h2>\n
First, check to see if all drives are recognized: <\/span><\/p>\n
arcconf GETCONFIG 1 PD<\/span><\/pre>\n
If they are not, start a manual rescan: <\/span><\/p>\n
arcconf RESCAN 1<\/span><\/pre>\n
The status of the RAID should then be shown as DEGRADED: <\/span><\/p>\n
root@rescue ~ # arcconf getconfig 1 ld\nControllers found: 1\n----------------------------------------------------------------------\nLogical device information\n----------------------------------------------------------------------\nLogical device number 0\n   Logical device name                      : Device 0\n   RAID level                               : 1\n   Status of logical device                 : Degraded\n   Size                                     : 1428470 MB\n   Read-cache mode                          : Enabled\n   Write-cache mode                         : Enabled (write-back)\n   Write-cache setting                      : Enabled (write-back)\n   Partitioned                              : No\n   Protected by Hot-Spare                   : No\n   Bootable                                 : Yes\n   Failed stripes                           : No\n   Power settings                           : Disabled\n   --------------------------------------------------------\n   Logical device segment information\n   --------------------------------------------------------\n   Segment 0                                : Inconsistent (0,0)  9VS38R1D\n   Segment 1                                : Present (0,1)       9VS38RKE<\/span><\/pre>\n
Now it may be necessary to delete the metadata: <\/span><\/p>\n
arcconf TASK START 1 DEVICE 0 0 CLEAR<\/span><\/pre>\n
Since “automatic failover” mode is enabled, the rebuild should have already started. If it has not, the drive is manually added to the RAID as a hot spare. The rebuild starts automatically: <\/span><\/p>\n
arcconf SETSTATE 1 DEVICE 0 0 HSP LOGICALDRIVE 0<\/span><\/pre>\n
After a RAID rebuild on a Hot-Spare drive, the drive remains as a hot spare. After replacing the defective drive, data automatically migrates back. It is also possible to remove a hot spare designation via arcconf and to mark the new replacement drive as a new Hot-Spare.<\/span><\/p>\n
For ex., how to setup Device 0;0 on Controller 1: change ‘Hot-Spare’ to ‘Ready’:<\/span><\/p>\n
arcconf setstate 1 device 0 0 rdy<\/span><\/pre>\n
How to read the SMART values of the drive in RAID <\/span><\/h2>\n
Using the sg module it is possible to access the physical drives behind the controller. An exanple for the first drive: <\/span><\/p>\n
smartctl -d sat -a \/dev\/sg1<\/span><\/pre>\n
Depending on the operating system, you may have to upgrade the smartmontools or the kernel. <\/span><\/p>\n
How to restore a faulty array <\/span><\/h2>\n
If an array is detected as failed or offline, there is a chance to force its activation or to create a new one without losing data. There is however, no guarantee that a recovery is possible. Data loss can not be excluded.<\/span><\/p>\n
Detailed information: Ask Adaptec<\/a><\/span><\/p>\n
It is possible in some circumstances to bring an array back online using the following command: <\/span><\/p>\n
arcconf SETSTATE <Controller#> LOGICALDRIVE <LD#> OPTIMAL [ADVANCED <option>] [noprompt]<\/span><\/pre>\n
An example for the first array on the first controller would be: <\/span><\/p>\n
arcconf SETSTATE 1 LOGICALDRIVE 0 OPTIMAL ADVANCED nocheck noprompt<\/span><\/pre>\n","protected":false},"excerpt":{"rendered":"
Adaptec RAID controller The arcconf tool is used for managing the controller on the command-line interface. asm (Adaptec Storage Manager) is a graphical tool. How to check the status of the hardware-based RAID To check the status of the Adaptec RAID Controller, the Adaptec command-line tool arcconf must be installed. The actual status of the […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[158,165],"tags":[],"class_list":["post-2413","post","type-post","status-publish","format-standard","hentry","category-dedicated-servers","category-servers-in-germany"],"yoast_head":"\nAdaptec RAID controller: how to create it? - Unihost.FAQ<\/title>\n<meta name=\"description\" content=\"Step by step instructions how to create Adaptec RAID controller. 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