User`s manual

Hard Disk Caching
AXIS StorPoint CD E100 User’s Guide 37
Hard Disk Caching
The StorPoint CD supports hard disk caching. This function has two main purposes:
• Improving performance - This is especially desirable if many clients are accessing a single disc,
or when using changers because of the relatively long time needed to change discs in a changer.
The hard disk will contain either the directory structure of the disc to allow faster file browsing
(Partial) or a complete copy of the mirrored disc to allow faster user access (Mirror). For these
cache modes, the cached data is only accessible when the disc is inserted. See “Using Hard Disk
Caching for Increased Performance ” on page 38.
• Archiving discs - The hard disk will contain a complete copy of the archived disc. Users can
access the cached data even if the original disc is ejected from the drive. See “Using Hard Disk
Caching for Archiving Discs ” on page 38.
Notes:
Verifying the Hard Disk
To verify that a valid hard disk is connected to your StorPoint CD, follow these steps:
1. Start your Web browser and enter the name or IP address of the StorPoint CD in the
location/address field.
2. Click admin. You will be prompted for the Server username and password. By default, these
are set to
root and pass.
3. On the This StorPoint page, click the hard disk icon to verify that the StorPoint CD has
detected one or several hard disks.
Information about the hard disk will be displayed to the right. The StorPoint CD will auto-
matically format the hard disks detected and use them for hard disk caching. You can attach up
to 6 hard disks to the SCSI bus, or if you are using an IDE server, 7 hard disks to the IDE bus.
Note:
• At least one hard disk must be connected to the SCSI/IDE bus.
• You manage hard disk caching via the StorPoint CD Web interface.
• For more information, refer to the “AXIS StorPoint CD E100 User’s Manual, Section 11 -
Hard Disk Caching”.
If a hard disk has been used before and includes a partition table, it must be formatted before it
can be used for hard disk caching. Click Format to do that. The formatting will remove all the
data currently stored on the disk. This is not something you would normally want to do.