Appendix B: Troubleshooting

Problems Finding a Wide-SCSI Hard Disk

The StorPoint CD is a narrow (8-bit) device. However, most hard disks are wide (16-bit) devices.

When you connect a wide-SCSI hard disk to your StorPoint CD, you will need an active converter in order to terminate the high data byte.

Important! ❏ Make sure the converter actively terminates the high byte. Do not use the converter on the last device in the SCSI chain. The last device should be a narrow device, e.g. a CD/DVD drive.

Low Transfer Rates when Using Disc Changers

Disc changer flutter can occur if a user requests access to a disc when another user is already reading data from another disc. The changer may then attempt to service both requests by repeatedly changing between the two discs and transferring a small amount of data each time. Because of the relatively long time needed to change discs, the data transfer rate to both users will become unacceptably low.

The JukeBox Lock Time parameter in the StorPoint CD configuration file specifies how long a user has exclusive access to a disc during a data read operation. This is to prevent disc change flutter in order to optimize access speed when many users are accessing different discs in the same changer.

The JukeBox Lock Time parameter will ensure that when there are simultaneous requests for access to different discs, a sizable block of data is transferred to each user before the access is changed.

•If the JukeBox Lock Time parameter is set too low, the data transfer rate will be unacceptably low.

•If the JukeBox Lock Time parameter is set too high, the disc drive will time- out on a second user’s request before the first user’s access is completed. This will result in users receiving a ‘CD-ROM not available’ notice.

The default setting is 0 seconds which disables this function.

Note: ❏ If you attach a hard disk drive to the StorPoint CD SCSI bus or IDE bus, you can benefit from the hard disk caching facility described in “Section 11

-Hard Disk Caching ” .

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Axis Communications CD E100 user manual Problems Finding a Wide-SCSI Hard Disk, Low Transfer Rates when Using Disc Changers
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CD E100 specifications

The Axis Communications CD E100 is a cutting-edge network video door station designed to enhance security and accessibility for residential and commercial properties. This innovative device combines video surveillance and intercom functionality, making it an essential component of modern security systems.

One of the standout features of the CD E100 is its high-definition video quality. The device is equipped with a 2 megapixel sensor that delivers crisp and clear video footage, ensuring that users can easily identify visitors at their doorstep. The wide-angle lens provides a 180-degree field of view, reducing blind spots and allowing for better overall surveillance coverage.

The CD E100 is also designed to withstand various environmental conditions, boasting an IP66 rating for weather resistance. This means it can operate effectively in rain, snow, and extreme temperatures, making it a reliable choice for outdoor installations. Additionally, the door station's robust materials protect it from vandalism and tampering, ensuring durability and longevity.

One of the key technologies integrated into the CD E100 is Power over Ethernet (PoE). This allows the device to receive power and data through a single network cable, simplifying installation and reducing clutter. PoE capability ensures that users can easily install the device in locations where standard power outlets may not be available.

The CD E100 also features two-way audio functionality, which allows users to communicate with visitors in real-time. This feature is particularly beneficial for enhanced security, as it enables property owners to speak to individuals at their door without needing to open it. The integrated microphone and speaker provide clear audio quality, ensuring effective communication.

Smart technology is also a highlight of the CD E100, supporting remote access via mobile devices. Users can monitor their entry points in real-time through the Axis Companion app or any compatible video management software. This feature not only enhances security but also provides convenience for users, as they can respond to visitors even when they are not home.

Overall, the Axis Communications CD E100 is a versatile and reliable video door station that combines advanced technology with user-friendly features. Its high-quality video, robust construction, and smart capabilities make it an excellent choice for those looking to enhance their security systems while maintaining ease of use.
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