HP P6000 manual Disk types, Disk group types, General guidelines

Models: P6000

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Disk types

The disk type specifies the type of physical disk drives that can be included in a disk group. The types are:

Online disk type. All physical drives must be Fibre Channel or enterprise SAS drives. This disk type provides first tier performance and reliability.

Near-online disk type. All physical drives are lower cost, lower performance hybrid Fibre Channel or midline SAS disk drives. Hybrid drives are dual ported, Fibre Attached Technology Adapted (FATA) drives. This disk type provides second tier performance and reliability.

Solid state drive disk type. All physical drives must be solid state drives (SSD). This disk type provides first tier, very high performance and reliability.

Disk type support varies with HP XCS controller software versions. The following table summarizes support and typical uses.

Feature

Online

Near-online

Solid state drive

XCS support

All versions

All versions

XCS 09500000 or later

Physical disks

Fibre Channel/SAS drives

FATA/SAS drives

Solid state drives

Typical uses

 

 

 

Disaster tolerance

Preferred usage

Preferred usage

Preferred usage

Disk-to-disk backup

 

Preferred usage

 

Disk-to-tape backup

 

Preferred usage

 

Frequent file access

Preferred usage

 

Preferred usage

Infrequent file access

 

Preferred usage

 

High performance

Preferred usage

 

Preferred usage

Virus attack recovery

 

Preferred usage

 

Disk group types

When a disk group is created, it is assigned a disk group type: basic or enhanced (default).

Disk group type

Supported Vraid levels

EVA support

Basic

Vraid0, Vraid1, and Vraid 5

EVA4000/4100/4400/6000/

 

 

6100/6400/8000/8100/8400

Enhanced

Vraid0, Vraid1, Vraid5, and Vraid6

EVA4400/6400/8400 P6300/P6500 EVA

General guidelines

One disk group (the default) is created when the system is initialized. You can add disk groups as needed.

Each physical disk drive can belong to only one disk group.

A single disk group may contain all the physical disk drives in the storage system.

Multiple virtual disks can be created in a disk group, up to the disk group's capacity.

Each virtual disk exists entirely within one disk group.

Disk groups 27

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HP P6000 manual Disk types, Disk group types, General guidelines