Hp Storage Mirroring V5.1 Software User Manual download pdf (Page 13)

4 - 1

Finding a Compatible

Target

In a high availability protection solution, the target you select must be suitable for becoming the

source, in the event the source fails. Full-Server Failover will validate the target you select and

identify any incompatibilities. Errors will disqualify the target as a suitable server. To find a

compatible target, check the table below for each of the requirements.

Target Compatibility

Requirement Configuration

Operating system

version

The source and the target must have the same operating system. For

example, you cannot have Windows 2003 on the source and Windows 2008

on the target. The two servers do not have to have the same level of service

pack or hotfix.

Domain The domain of the source should be the same as the domain of the target.

Server role The target cannot be a domain controller. Ideally, the target should not host

any functionality (file server, application server, and so on) because the

functionality will be removed when failover occurs.

If your source is a domain controller, it will start in a non-authoritative restore

mode after failover. This means that if the source was communicating with

other domain controllers before failover, it will require one of those domain

controllers to be reachable after failover so it can request updates. If this

communication is not available, the domain controller will not function after

failover. If the source is the only domain controller, this is not an issue.

Architecture The source and the target must have the same architecture. For example, you

cannot failover a 32-bit server to a 64-bit server.

Processors There are no limits on the number or speed of the processors, but the source

and the target should have at least the same number of processors. If the

target has fewer processors or slower speeds than the source, there will be

performance impacts for the users after failover.

Memory The target memory should be within 25% (plus or minus) of the source. If the

target has much less memory than the source, there will be performance

impacts for the users after failover.

Network adapters You must map at least one NIC from the source to one NIC on the target. If

the source has more NICs than the target, some of the source NICs will not

be mapped to the target. Therefore, the IP addresses associated with those

NICs will not be available after failover, unless you configure the advanced

options. If there are more NICs on the target than the source, the additional

NICs will still be available after failover.

File system format The source and the target must have the same file system format. For

example, an NTFS volume cannot be sent to a FAT volume.

HAL type and

version

The Windows hardware abstraction layer (HAL) refers to a layer of software

that deals directly with your computer hardware. The HAL type and version do

not have to be identical, but they must be compatible between the source and

the target. If the two are incompatible, Full-Server Failover will warn you. In

that case, you must upgrade or downgrade the target.

Administrative

The Full-Server Failover Manager must be able to access administrative

shares on the source and the target.

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 26 27

Comments to this Manuals

No comments

Hp Storage Mirroring V5.1 Software User Manual Page 13

Comments to this Manuals

Related products and manuals for Storage Hp Storage Mirroring V5.1 Software