Hp Storage Mirroring Software User Manual download pdf (Page 27)

Storage Mirroring Replicate requirements Page 26 of 214

Replication capabilities

Storage Mirroring Replicate replicates file and directory data stored on any Windows file

system (FAT, FAT32, NTFS4, and NTFS5). Replicated items also include Macintosh

files, compressed files, NTFS attributes and ACLs (access control list), dynamic

volumes, files with alternate data streams, sparse files, and encrypted files. Files can be

replicated across mount points, even though mount points are not created on the target.

Some reparse points are replicated, including CommVault Data Migrator and

BridgeHead Software HT FileStore.

Storage Mirroring Replicate does not replicate items that are not stored on the file

system, such as physical volume data and registry based data. Additionally, Storage

Mirroring Replicate does not replicate NTFS extended attributes, registry hive files,

Windows or any system or driver pagefile, system metadata files ($LogFile, $Mft,

$BitMap, $Extend\\$UsnJrnl, $Extend\\$Quota, $Extend\\$ObjId, and

$Extend\\$Reparse), hard links, or the Storage Mirroring Replicate disk-based queue

logs. The only exception to these exclusions is for system state protection. If you are

protecting your system state, Storage Mirroring Replicate will automatically gather and

replicate all necessary system state data, including files for the operating system and

applications.

Note the following replication caveats.

1. If you have mixed file systems, keep in the mind the following.

a. If, on your source, you have a FAT volume mounted on a directory which

resides on an NTFS volume, these files will not be mirrored, regardless of the

target file system. Replication will work correctly. To work around this issue,

make sure both volumes are NTFS.

b. If you are mirroring/replicating from an NTFS source to a FAT target, you may

see additional error messages in your Storage Mirroring Replicate log file

because the target file system cannot handle the NTFS attributes or file

permissions. For example, if your replication set contains files with alternate

data streams, you will see messages indicating that there are unfinished

operations because the FAT file system cannot store the alternate data

stream information.

c. If you select a compressed file or folder from an NTFS partition and replicate

it to a FAT target, the attributes are lost, but the data is maintained.

2. If any directory or file contained in your replication set specifically denies

permission to the system account or the account running the Storage Mirroring

service, the attributes of the file on the target will not be updated because of the

lack of access. This also includes denying permission to the Everyone group

because this group contains the system account.

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Hp Storage Mirroring Software User Manual Page 27