Data ONTAP 8: How does disk ownership of NetApp Shared Storage work and what are the requirements?
Applies to
- Clustered Data ONTAP 8
- Data ONTAP 8 7-Mode
Answer
Disk ownership of NetApp Shared Storage
Assign or show disk ownership of a NetApp Shared Storage
Disks need to be assigned after being replaced
What are the requirements for enabling sanown / software disk-based ownership?
NetApp Shared Storage follows the software-based ownership model. The basics of the ownership model are:
- Disks are explicitly assigned to a storage system
- Ownership information is written to the disk
- Once assigned, storage systems use reservations to keep other storage systems from touching the disk
- Some disks may stay unowned. Unowned disks will not have new firmware downloaded
- Disks must be assigned to be used as a spare
The requirements for enabling software ownership (sanown) are:
- A Data ONTAP version that supports sanown
- CompactFlash boot based filer
- DS14, DS14mk2 shelf
To assign disk ownership of a NetApp Shared Storage:
- Data ONTAP 8 7-Mode:
disk assign <diskname> [-f] [-p ] [- o <ownername>] [-s <sysid>]
-
- Normal usage is to assign ownership of unowned disks to local storage system:
disk assign 0b.16
disk assign 0b.17 -p 1
-
- To assign disk owned by local storage system back to unowned:
disk assign 0b.16 -s unowned -f
-
- To assign ownership to another storage system:
disk assign 0b.16 -o otherguy -f
Should use higher-level functionality (vFiler migrate) to do this, unless disk is a spare
-
- If receiving storage system is unable to communicate with the donor storage system, there will be warnings about rescan messages.
- If receiving storage system is unable to communicate with the donor storage system, there will be warnings about rescan messages.
- Data ONTAP 8 Cluster-Mode:
'disk reassign' is an advanced command.
::> set adv
::*> disk reassign ?
(storage disk reassign)
[[-home] <text>] Current Home Name
[ -newhome <nodename> ] New Home Name
[ -homeid <nvramid> ] Current Home ID
[ -newhomeid <nvramid> ] New Home ID
[ -force [{true|false}] ] Force
To display the disk ownership of a NetApp Shared Storage:
- Data ONTAP 8 7-Mode:
disk show [-o <hostname> | -s <sysid> | -n | -v | -a ]
Display information for disks:
- with matching owner name
- with matching system id
- not owned by any system
- verbose listing of all disks
- owned by any storage system
For example, seeing every disk's ownership:
cfo-u37> disk show -v
DISK OWNER POOL SERIAL NUMBER
------------ ------------- ----- -------------
9b.19 cfo-u37 (50408384) Pool0 3HZ6RA1B00007426SWC9
8b.107 cfo-u39 (50408359) Pool0 3HZ6SF3L000074289QWS
2b.49 cfo-u38 (50408371) Pool0 3HZ6SD55000074289R4R
3a.22 cfo-u37 (50408384) Pool0 3HZ6YDGM000074310Z3A
9b.68 cfo-u39 (50408359) Pool0 3HZ6SEGL00007428B70G
8a.20 cfo-u39 (50408359) Pool0 3HZ6P9PG0000740529DS
3b.99 cfo-u36 (50408412) Pool0 414R6372
3b.108 cfo-u36 (50408412) Pool0 414W6158
3b.98 cfo-u36 (50408412) Pool0 414W5818
3b.49 cfo-u36 (50408412) Pool0 413M5089
- Data ONTAP 8 Cluster-Mode:
::> disk show
Available options are :
(storage disk show)
[ -classic | -instance | -longop | -physical | -port | -raid | -sanown |
-v | -fields <fieldname>, ... ]
[[-disk] <disk path name>] Disk
[ -physicalsize <integer> ] Physical Size (MB)
[ -usedsize <integer> ] Used Size (MB)
[ -type <disk type> ] Type
[ -vendor <text>] Vendor
[ -serialnumber <text> ] Serial Number
[ -model <text> ] Model
[ -revision <text> ] Firmware Revision
[ -rpm <integer> ] RPM
[ -bps <integer> ] Bytes Per Sector
[ -checksum <text> ] Checksum Compatibility
[ -shelf <integer> ] Shelf
[ -bay <integer> ] Bay
[ -state <disk state> ] State
[ -detailstate <text>] Detail State
[ -raidtype {pending|parity|dparity|data} ] Raid Type
[ -raidgroup <text> ] Raid Group
[ -plex <text> ] Plex
[ -aggregate <aggregate name> ] Aggregate
[ -home <nodename> ] Home
Additional Information
N/A