Hp StorageWorks All-in-One SB600c Storage Blade Manual do Utilizador descarregar pdf (Página 30)

RAID level

Description

performance is lower than RAID 5 due to parity data updating on

multiple drive

s. It uses two disk for parity; its fault tolerance allows

two disks to fa

il simultaneously. Usable capacity is N-2 where N is

the number of p

hysical drives in the logical array.

Setting a percent full warning threshold

To receive a warning alert when storage capacity reaches a speciﬁed limit, set the percent full warning

threshold. You can set a warning threshold for any application component, user-deﬁned application,

and shared folder that ASM manages.

By default, the warning threshold is set to 80%. To change it, enter a new percent value on the Advanced

window .

After you set a warning threshold, ASM changes the status indicator for the application component,

user-deﬁned application, or shared folder when this threshold has been surpassed. This is a warning

only; no hard limits are enforced on storage capacity as a result of setting this value. The warning is

visible in these places:

• A yellow warning icon appears on the application component, user-deﬁned application, or

shared folder icon in the content pane.

• As an alert in the Properties window.

NOTE:

For shared folders, you can set an enforceable limit (or quota) for allocated storage, as well as a warning

threshold. For more information, see Enforcing an allocated storage limit for shared folders.

Enforcing an allocated storage limit for shared folders

ASMprovidesawaytoenforceanallocatedstoragelimitforasharedfolder. Ifenforced,thesystem

does not allow the amount of allocated space for the shared folder to b e exceeded.

If the capacity of the shared folder surpasses the percent full warning threshold and reaches the allocated

space limit, the ﬁle folder status changes from Warning to Critical in the content pane, and users are

blockedfromaddingdatatothissharedfolder.

NOTE:

If you do not choose to enforce an allocated storage limit for a shared folder, the ASM status ind icator

still goes from

Warning

Critical

in the content pane; however, users are not blocked from adding data

to the shared folder as long as there is still unallocated storage sp ace on the logical disk where the

sharedfolderresides.Datacanbewrittentothesharedfolderuntilthelogicaldiskisfull.

By default, the Enforce Allocated Limit (Quota) is set to No for all shared folders. To change this setting,

do one of the following:

• Using the Create a Shared Folder Wizard, change the Enforce Allocated Limit (Quota) setting

on the Advanced window to Yes.

• Select the s hared folder in the content pane, click Properties in the Actions pane, click the

Warning Threshold tab, and then select the Enforce Allocated Limit (Quota).

• Select the shared folder in the content pane, click Allocate Space in the Actions pane, click

Advanced, and then change the Enforce Allocated Limit (Q uota) setting to Yes.

Hosting storage for applications and shared folders

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