Acopia Networks 810-0044-00 Manual de instalación descargar pdf (Pagina 433)

100

101

Migrating Filesets

Directing File Placement

CLI Storage-Management Guide 14-15

bstnA6k(gbl-ns-vol-plc[wwmed~/acct~distributeFiles])# ...

Balancing Capacity in a Target Share Farm

When a share farm is a file-placement target, the first configured share in the farm is

the default share for placed files. Most files are placed on the same share as their

parent directory, but a file defaults to the first share if its parent directory is outside

the share farm. The first share in the farm can therefore take a heavier file burden over

time.

To migrate files off of any share that is running low on free space, you can configure

auto migration for the share farm. Refer back to “Auto Migrating Existing Files” on

page 12-18 to configure auto migration.

Limiting Each Migration (optional)

You can use the limit-migrate command to put a ceiling on the amount of data

migrated. The policy engine migrates files until it meets this limit; it stops migrating

as soon as it discovers that the next file would exceed the limit.

limit-migrate size[k|m|g|t]

where

size (1-18,446,744,073,709,551,615) is the size, and

k|m|g|t (optional) is the units; kilobytes (1024 bytes), megabytes

(1024*1024 bytes), gigabytes (1024*1024*1024), or terabytes

(1024*1024*1024*1024). The default is bytes.

This limit applies to every run of the placement rule, so you can use it in conjunction

with a schedule to migrate a limited amount of data during off-hours. For example,

you can allow a limit of 10 Gigabytes and a daily schedule that runs at midnight. If the

source fileset contains 50 Gigabytes of data, it would migrate over five nights, 10G

per night.

This limit has no effect on a placement rule that matches directories only. The

from

fileset

command determines whether files, directories, or both are matched. This

command is described above.

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