HP StorageWorks X1600 12TB SATA Network Storage System User's Guide download pdf (Page 45)

SIS consists of two primary components that together maintain a database of file signatures. These

components include:

• Groveler service - The Groveler service scans the hard-disk volumes on a server for duplicate

copies of files. If the service locates duplicate copies of files, the information about the duplicates

is sent to the Single Instance Storage Filter. The Groveler service runs as a user-level service.

• Single Instance Storage Filter - The Single Instance Storage Filter is a file system filter service that

manages duplicate copies of files on hard-disk volumes. When notified by the Groveler service

of duplicate copies of files, this component copies one instance of a duplicate file into a central

folder. The duplicate is then replaced by a link (a reparse point) to the central copy. The link file

contains information about the original file, such as its current location, size, and attributes. The

Single Instance Storage Filter runs in kernel mode.

The Single Instance Storage Filter service cannot be stopped. If this service is disabled, the linked files

are not accessible. If the central folder is deleted, the linked files can become permanently inaccessible.

If you stop the Groveler service, the files cannot be automatically linked, but the existing linked files

can still be accessible.

You can enable SIS on a maximum of 20 volumes per computer. SIS cannot act upon any files that

are referenced through junction points, and it cannot be used with any file system except the NTFS

file system. SIS will not process files that are 32 kilobytes or less in size.

If you need to access data that is stored on a SIS volume, which might be required for backup and

recovery operations, you must either run or have installed Single Instance Storage Filter on your

computer.

Backup and recovery by using SIS has the following requirements:

• The backup software used must support SIS-enabled volumes.

• The SIS volume, SIS Common Store folder, and reparse points (links) to the files must be restored

to a Windows 2000 NTFS version 5.0 (or later) file system or partition that supports reparse points

or junction points.

• The Single Instance Storage Filter must be installed or enabled to access the data in the SIS volume.

• The backup program must be capable and configured to backup and restore the reparse points

or junction points (links) to the files, and the SIS volume and the SIS Common Store folder must

be selected.

To enable Single Instance Storage on a volume:

1. In Server Manager, select Roles > File Services > Share and Storage Management.

2. Select the Volumes tab.

3. Right-click a volume and select Properties.

4. Select the Advanced tab.

5. Select the Enable SIS on this volume check box.

6. Click OK.

For more information, see the Windows Storage Server 2008 Help.

Print Management

Print Management is an MMC snap-in that you can use to view and manage printers and print servers

in your organization. You can use Print Management from any computer running Windows Storage

Server 2008, and you can manage all network printers on print servers running Windows 2000

Server, Windows Server 2003, Windows Storage Server 2003, Windows Storage Server 2003 R2,

or Windows Storage Server 2008.

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