Storix-software SBAdmin User Guide Instrukcja Użytkownika Pobierz pdf (Strona 160)

4. Pad missing data blocks with nulls?: When a data sync error occurs, assuming the reading is setup

to continue, the missing data will be padded with NULL bytes by default (the field is set to yes). This is

to ensure that, although the data has been altered, it remains in the correct alignment.

It is very important for the data to remain in the correct alignment when restoring

raw device backups (logical/ZFS volumes, slices or meta-disks). If you do not pad

sync errors with NULL bytes, all of the data following the error would be restored to

a different location than expected. Volume Group, Zpool, Filesystem and

File/Directory backups use an underlying restore command that is capable of re-

synchronizing when there is missing data in the data stream. Therefore, the value of

this field is less relevant when restoring from these backup types. However, the

restore command may sometimes fail when it encounters too large of a stream of

NULL bytes. In this case, it may be advisable to change this value to "no".

When all changes have been made, press the Save button to save changes and exit this function. If you are

unsure of your changes and want to return to the system defaults, press the Defaults button. After doing so, all

data in the fields will be replaced with the defaults and you must then press Save to save them.

Change Access Permission of a Disk Backup

This option is not available when using Workstation Edition.

When a backup is performed, one of the options of the backup profile allows you to specify the read permission

of backups written to disk. This is because a disk file is, by default, readable by any user, local or remote. Since

the disk backup files may contain confidential information, this is often not advisable.

The Backup Administrator automatically makes the contents of the file readable only by the root user of the

local or remote system, whether the file itself is readable or not. In the

backup profile, you may also specify

whether only the original client that wrote the backup may read the contents, or any client with access to the

directory on the backup server. If you plan to allow the backup of one client to be restored or installed onto

another client system, you must permit other clients access to the backup. If you did not do so when the backup

was created, this option will allow you to change your mind.

To change the client access to a backup, select Utilities!Change Access Permission of a Disk Backup. A

screen similar to the following will appear:

You will be asked to select the Server name and the Backup Device to which the desired backup was written.

The directory or directories specified by the device will be searched and a list of backups will be displayed.

Some of the backups may be part of the same Backup ID if there were multiple clients included in the same

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Storix-software SBAdmin User Guide Instrukcja Użytkownika Strona 160