Recommended applications according to hdd type – HP XP P9500 Storage User Manual

Page 33

•

Make sure that an external volume is accessed only from the local storage system side once
the external volume is mapped.

◦

Make sure that the external volume, which has been mapped as an internal virtual volume,
is not accessed from a host that is connected to the external storage system.

◦

Make sure that the external volume, which has been mapped as an internal virtual volume,
is not manipulated by a copy function or some other functions of the external storage
system.

◦

If you need to access the mapped external volumes from the external storage system,
perform the operation explained in

“Disconnecting external storage system or external

volume” (page 50)

Hosts can access the external storage system volumes that have not been mapped as the
internal volumes.

•

Do not map multiplatform volumes of external storage systems as internal volumes.

•

When an external storage system that has an ownership is connected to the P9500 storage
system, configure the external path to the primary controller in the external storage system as
primary path.

Ownership is an exclusive right to control volumes. A controller that has an ownership is called
a primary controller. If a external path to a controller without ownership is configured as
primary path, the ownership will be transferred and it may affect performance.

Recommended applications according to HDD type

Table 2 (page 33)

and

Table 3 (page 33)

show the recommended level of the application of

mapped external volume according to the hard disk drive (HDD) type of the external volume.

Table 2 When the emulation type of the external volume is for OPEN

HDD type

Application

SATA**

SAS/FC*/Flash Drive

Not Recommended

Database

Online Transaction Processing (OLTP)

Not Recommended

File Operation from Host

(Both of Read and Write)

File Operation from Host

(Mainly Read)

Recommended

Backup

Recommended