DISK

Disks

Disk name 

Normally the disk will reside in a disk enclosure, In dish self disk should be like 2a.17 depending on the type of disk enclosure.

• 2a = SCSI adapter 
• 17 = 17th disk in the row

Disk Types

Data      : Holds data stored within the RAID group

Spare    : Does not hold usable data but is available to be added to a RAID group in an aggregate,

                also known as a hot spare

Parity    : Store data reconstruction information within the RAID group

dParity  : Stores double-parity information within the RAID group, if RAID-DP is enabled

These are type of disks in filler

DISK TYPE	RAID-DP	RAID4
ATA/BSAS/SATA                        Maximum	16	7
FC/SAS                         Maximum	28	14
ATA/BSAS/SATA                             Default	14	4
FC/SAS                          Default	16	7
ATA/BSAS/SATA                         Minimum	3	2
FC/SAS                       Minimum	3	2

Disk Commands 

Display 

> disk show
> disk show <disk_name>

disk_list

> sysconfig -r
> sysconfig -d


//  list all unnassigned/assigned disks
disk show -n
disk show -a

Adding (assigning) 

Add a specific disk to pool1 the mirror pool
disk assign <disk_name> -p 1

// Assign all disk to pool 0, by default they are assigned to pool 0 if the "-p"
// option is not specified
> disk assign all -p 0

Remove (spin down disk)

> disk remove <disk_name> 

Reassign 

> disk reassign -d <new_sysid>

Replace

> disk replace start <disk_name> <spare_disk_name>
> disk replace stop <disk_name>

Note: when data copying from the one disk to another disk (like failed disk to spare disk), you can stop this process using the stop command

Zero spare disks 

> disk zero spares

fail a disk 

> disk fail <disk_name>

Scrub a disk 

> disk scrub start
> disk scrub stop

Sanitize 
Note: the release modifies the state of the disk from sanitize to spare.
Sanitize requires a license.

> disk sanitize start <disk list>
> disk sanitize abort <disk_list>
> disk sanitize status
> disk sanitize release <disk_list>

Maintanence 

> disk maint start -d <disk_list>
> disk maint abort <disk_list>
> disk maint list
> disk maint status

Note: you can test the disk using maintain mode 

swap a disk 

> disk swap
> disk unswap

Note: it stalls all SCSI I/O until you physically replace or add a disk,
can used on SCSI disk only.

Statisics 

disk_stat <disk_name>

Simulate a pulled disk 

disk simpull <disk_name>

Simulate a pushed disk

disk simpush -l
disk simpush <complete path of disk obtained from above command>

Example
> disk simpush -l
The following pulled disks are available for pushing:
v0.16:NETAPP__:VD-1000MB-FZ-520:14161400:2104448

> disk simpush v0.16:NETAPP__:VD-1000MB-FZ-520:14161400:2104448