Hp StorageWorks All-in-One SB600c Storage Blade Uživatelský manuál stáhnout pdf (Strana 28)

NotesDescriptionItem

For more information about RAID

levels, see “Customizing RAID

levels” on page 29.*

Hard drive formatting that provides different

levels of performance, capacity, and data

protection.

RAID Level

ASM provides the following general

values: small (8 kB), medium (16

kB), and large (64 kB).*

The number of bytes or kilobytes of data in each

RAID stripe (block of data). The RAID stripe size

selected affects performance. For the best

performance, select the stripe size closest to the

size of the files being saved.

RAID Stripe Size

The percent full warning threshold

is set by default to 80%. Percent full

The percent full value that when reached

changes the storage status to Warning and

Percent Full Warning

Threshold

warning threshold values areissues a warning alert. The warning indicates

ASM-specific; percent full warningthat storage use has surpassed the percentage

threshold values selected in thefull value. For example, if you enter 75%, you

see a warning (yellow asterisk) in the content

pane when storage is at 75 percent full.

Quota Management MMC snap-in

are not adopted by ASM. However,

all other Quota Management MMC

snap-in settings are adopted by

ASM. See “Setting a percent full

warning threshold” on page 30.

For Exchange and SQL Server,

ASM default values specify

Data is stored on hard drives dedicated to

storing only the data for the application

Exclusive Storage

exclusive storage for log files, whichcomponent, user-defined application, or shared

according to storage best practices,

should be isolated from other

application storage areas.*

folder you are configuring. The number of hard

drives dedicated depends on the allocated

space size and other advanced storage

configuration settings selected for the item you

are configuring. Exclusive storage is required

by some applications for the storage of specific

types of data.

This item is available for shared

folders only. See “Enforcing an

allocated storage limit for shared

folders” on page 30.

Sets an enforced quota for the amount of storage

available to a shared folder. When the storage

space allocated to a shared folder is full, no

further data can be saved to the shared folder.

Enforce Allocated

Limit (Quota)

A hot spare is assigned at the array

level. A LUN that does not require

A hot spare is a hard drive reserved as a spare

for storage space configured as RAID 1, 1+0,

Hot Spare Required

a hot spare may be assigned one

anyway if another LUN on the same

array requires a hot spare.

5, or 6. A hot spare automatically replaces a

hard drive when it fails. When the failed hard

drive is replaced, its replacement becomes the

new hot spare.

You are able to choose SAS, (Serial

Attached SCSI) SATA, (Serial

Type of physical disk to add for the hot sparePhysical Disk Type

Advanced Technology Attachment)

or SCSI (Small Computer System

Interface) for a physical disk type.

*After you have allocated and configured storage for an application component, user-defined application,

or shared folder using a wizard, you can change the allocated space size, change the percent full warning

threshold, and change the enforced allocated limit (shared folders only). However, you cannot change the

RAID level, RAID stripe size, Hot Spares, or Exclusive Storage settings. This is due to the nature of how hard

drives work.

Hosting storage for applications and shared folders28

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