An Overview of some NetApp Data ONTAP Tuning Options

Note: The commands below are Data ONTAP 7-Mode commands. They can be run in Clustered Data ONTAP by simply placing run -node nodename -command infront (the information actually comes from a Clustered Data ONTAP 8.1.X system.)

Listed in this post:

- maxfiles

- aggr options (all 13)

- vol options (all 41)

- options *.* (97 listed and includes disk.*, raid.*, and wafl.*)

Maxfiles (Inodes)

To query the number of inodes in a FlexVol:

maxfiles volumename

To increase the number of inodes in a FlexVol:

maxfiles volumename 10000000

IMPORTANT: “Increasing the maximum number of files consumes disk space, and the number can never be decreased. Configuring a large number of inodes can also result in less available memory after an upgrade, which means you might not be able to run WAFL_check.”

Aggregate Options (Complete Listing of all 13)

aggr options aggrname free_space_realloc {on | off | no_redirect}

  - enable/disable free space reallocation on aggregate aggrname along with redirect scanner

aggr options atvname fs_size_fixed {on | off}

  - do not grow filesystem for aggregate or traditional volume atvname

aggr options aggrname ha_policy {none | cfo | sfo}

  - set ha_policy on aggregate aggrname

aggr options aggrname [-f] hybrid_enabled {on | off}

  - allow mixing HDD and SSD groups in aggregate aggrname

aggr options aggrname lost_write_protect {on | off}

  - default is to enable lost write protection on the aggregate

aggr options atvname nosnap {on | off}

  - disable snapshots on aggregate or traditional volume atvname

aggr options aggrname percent_snapshot_space percent

  - change aggregate aggrname's percent_snapshot_space setting

aggr options atvname raidsize size

  - set RAID group size on aggregate or traditional volume atvname

aggr options atvname raidtype (new-type = {raid4 | raid_dp})

  - change aggregate or traditional volume atvname's RAID type to new-type

aggr options atvname resyncsnaptime minutes

  - set RAID mirror resync snapshot frequency for aggregate or traditional volume atvname

aggr options atvname root

  - aggregate or traditional volume atvname becomes root on reboot

aggr options atvname snapmirrored off

  - discontinue mirroring on aggregate or traditional volume atvname

aggr options aggrname snapshot_autodelete {on | off}

  - change aggregate aggrname's snapshot_autodelete setting

Volume Options (Complete Listing of all 41)

vol options volname acdirmax seconds

  - set timeout before verifying directories

vol options volname acdisconnected seconds

  - set the timeout to serve items after last verify when in disconnected mode

vol options volname acregmax seconds

  - set timeout before verifying regular files

vol options volname acsymmax seconds

  - set timeout before verifying symbolic links

vol options volname actimeo seconds

  - set timeout to verify items without an explicit timeout

vol options volname convert_ucode {on | off}

  - enable UNICODE conversion on volume volname (default: off)

vol options volname create_ucode {on | off}

  - enable UNICODE creation on volume volname (default: off)

vol options volname disconnected_mode {off | hard | soft}

  - set the disconnected operation mode for caching

vol options volname dlog_hole_reserve {on | off}

  - enable hole reservation of delete log on volume volname

vol options volname extent {on | space_optimized | off}

  - configure extents on volume volname

vol options volname flexcache_autogrow {on | off}

  - enable autogrow on FlexCache volume volname

vol options volname flexcache_min_reserve size[k|m|g|t]

  - set size to be guaranteed for caching by volume

vol options volname fractional_reserve percentage

  - default is to have 100% reserve

vol options volname fs_size_fixed {on | off}

  - do not grow filesystem for volume volname

vol options volname guarantee {none | file | volume}

  - set storage guarantee for volume volname

vol options volname maxdirsize size

  - set maximum directory size on volume volname (unit: Kbytes, default: 1% of total system memory in KB, minimum: 4KB, maximum: 4194303KB)

vol options volname minra {on | off}

  - enable minimum readahead on volume volname

vol options volname nbu_archival_snap {on | off} [-f]

  - enable/disable archival snapshots for SnapVault for NetBackup on volume volname

vol options volname no_atime_update {on | off}

  - disable atime updates on volume volname

vol options volname no_delete_log {on | off}

  - disable delete logging on volume volname

vol options volname no_i2p {on | off}

  - disable inode to path on volume volname

vol options volname nosnap {on | off}

  - disable snapshots on volume volname

vol options volname nosnapdir {on | off}

  - disable '.snapshot' directory on volume volname

vol options volname nvfail {on | off}

  - invalidate file handles on NVRAM failure on volume volname

vol options volname raidsize size

  - set RAID group size on traditional volume volname

vol options volname raidtype (new-type = {raid4 | raid_dp})

  - change traditional volume volname's RAID type to new-type

vol options volname read_realloc {on | space_optimized | off}

  - configure read reallocation on volume volname

vol options volname resyncsnaptime minutes

  - set RAID mirror resync snapshot frequency for traditional volume volname

vol options volname [-f] root

  - volume volname becomes root on reboot

vol options volname schedsnapname {create_time | ordinal}

  - set scheduled snapshot names to include creation time or ordinal on volume volname

vol options volname snaplock_autocommit_period {none|(count){h|d|m|y}}

 - configure SnapLock autocommit period

vol options volname snaplock_default_period {(count){s|h|d|m|y}}|min|max|infinite

 - configure default SnapLock retention period

vol options volname snaplock_maximum_period {(count){s|h|d|m|y}}|infinite

 - configure maximum SnapLock retention period

vol options volname snaplock_minimum_period {(count){s|h|d|m|y}}|infinite

 - configure minimum SnapLock retention period

vol options volname snapmirrored off

  - discontinue mirroring on volume volname

vol options volname snapshot_clone_dependency {on | off}

  - enable option to remove dependency of backing snapshot on other snapshots for volume vol-name (default: off)

vol options volname svo_allow_rman {on|off}

  - set SnapValidator to correctly check RMAN backup data

vol options volname svo_checksum {on|off}

  - enable SnapValidator data checksumming on volume volname

vol options volname svo_enable {on|off}

  - enable SnapValidator for volume volname

vol options volname svo_reject_errors {on|off}

  - set SnapValidator to prevent all invalid operations default is to only log the errors

vol options volname try_first {volume_grow | snap_delete}

  - set volume to autogrow or delete snapshots first

Options (Listing of 97*)

*This is the complete list from the 8.1.2 C-Mode SIM, and is missing some options you would find on a production FAS/V-series controller!

options acp.domain

options acp.enabled

options acp.netmask

options acp.port

options autosupport.doit

options cdpd.enable

options cdpd.holdtime

options cdpd.interval

options cf.giveback.auto.after.panic.takeover

options cf.giveback.auto.cancel.on_network_failure

options cf.giveback.auto.cifs.terminate.minutes

options cf.giveback.auto.delay.seconds

options cf.giveback.auto.enable

options cf.giveback.auto.terminate.bigjobs

options cf.giveback.check.partner

options cf.hw_assist.enable

options cf.hw_assist.partner.address

options cf.hw_assist.partner.port

options cf.takeover.change_fsid

options cf.takeover.detection.seconds

options cf.takeover.on_disk_shelf_miscompare

options cf.takeover.on_failure

options cf.takeover.on_network_interface_failure

options cf.takeover.on_network_interface_failure.policy all_nics

options cf.takeover.on_panic

options cf.takeover.on_reboot

options cf.takeover.on_short_uptime

options cf.takeover.use_mcrc_file

options disk.asup_on_mp_loss

options disk.auto_assign

options disk.latency_check.enable

options disk.maint_center.allowed_entries

options disk.maint_center.enable

options disk.maint_center.max_disks

options disk.maint_center.rec_allowed_entries

options disk.maint_center.spares_check

options disk.powercycle.enable

options disk.recovery_needed.count

options ems.autosuppress.enable

options flexcache.access

options flexcache.deleg.high_water

options flexcache.deleg.low_water

options flexcache.enable

options flexcache.per_client_stats

options flexscale.enable

options flexscale.lopri_blocks

options flexscale.normal_data_blocks

options flexscale.pcs_high_res

options flexscale.pcs_size

options flexscale.rewarm

options locking.grace_lease_seconds

options qos.classify.count_all_matches

options raid.background_disk_fw_update.enable

options raid.disk.background_fw_update.raid4.enable

options raid.disk.copy.auto.enable

options raid.disktype.enable

options raid.media_scrub.enable

options raid.media_scrub.rate

options raid.media_scrub.spares.enable

options raid.min_spare_count

options raid.mirror_read_plex_pref

options raid.reconstruct.perf_impact

options raid.reconstruct.wafliron.enable

options raid.resync.perf_impact

options raid.rpm.ata.enable

options raid.rpm.fcal.enable

options raid.scrub.duration

options raid.scrub.enable

options raid.scrub.perf_impact

options raid.scrub.schedule

options raid.timeout

options raid.verify.perf_impact

options shelf.atfcx.auto.reset.enable

options shelf.esh4.auto.reset.enable

options shelf.fw.ndu.enable

options snapmirror.access

options snapmirror.checkip.enable

options snapmirror.delayed_acks.enable

options snapmirror.enable

options snapmirror.log.enable

options snapmirror.vbn_log_enable

options snapmirror.volume.local_nwk_bypass.enable

options snapmirror.vsm.volread.smtape_enable

options stats.archive.enable

options tape.reservations

options wafl.default_nt_user

options wafl.default_qtree_mode

options wafl.default_security_style

options wafl.default_unix_user

options wafl.group_cp

options wafl.inconsistent.asup_frequency.blks

options wafl.inconsistent.asup_frequency.time

options wafl.inconsistent.ems_suppress

options wafl.maxdirsize

options wafl.nt_admin_priv_map_to_root

options wafl.root_only_chown

options wafl.wcc_minutes_valid