Learn Cycle Completion Time Frame

The time frame for completion of a learn cycle is a function of the battery charge capacity and the discharge/charge currents used. For PERC 6, the expected time frame for completion of a learn cycle is approximately seven hours and consists of the following parts:

•Learn cycle discharge cycle: approximately three hours

•Learn cycle charge cycle: approximately four hours

Learn cycles shorten as the battery capacity deteriorates over time.

NOTE: For additional information, see the OpenManage storage management application.

During the discharge phase of a learn cycle, the PERC 6 battery charger is disabled and remains disabled until the battery is discharged. After the battery is discharged, the charger is re-enabled.

Virtual Disk Write Cache Policies

The write cache policy of a virtual disk determines how the controller handles writes to that virtual disk. Write-Backand Write-Throughare the two write cache policies and can be set on a virtual disk basis.

Write-Back and Write-Through

In Write-Throughcaching, the controller sends a data transfer completion signal to the host system when the disk subsystem has received all the data in a transaction.

In Write-Backcaching, the controller sends a data transfer completion signal to the host when the controller cache has received all the data in a transaction. The controller then writes the cached data to the storage device in the background.

The risk of using Write-Backcache is that the cached data can be lost if there is a power failure before it is written to the storage device. This risk is mitigated by using a BBU on selected PERC 6 controllers. For information on which controllers support a BBU, see Table 3-1.

Write-Back caching has a performance advantage over Write-Through caching.

NOTE: The default cache setting for virtual disks is Write-Back caching.

NOTE: Certain data patterns and configurations perform better with a Write-Through cache policy.

32

About PERC 6 and CERC 6i Controllers

Page 31 Page 33
Page 32
Image 32
Dell UCP-60, UCP-61, UCC-60 manual Virtual Disk Write Cache Policies, Write-Back and Write-Through
Page 31 Page 33

UCP-61, UCP-60, UCC-60 specifications

The Dell UCC-60, UCP-60, and UCP-61 are innovative solutions that enhance collaborative experiences in modern workplaces. These products integrate cutting-edge technologies to facilitate seamless communication and create a dynamic meeting environment.

The Dell UCC-60 is a comprehensive conference camera system designed to optimize video conferencing. It features a 4K ultra-high-definition camera that ensures crystal-clear video quality, promoting a more immersive meeting experience. With a wide-angle lens, the UCC-60 captures all meeting participants, making it ideal for larger teams. The camera’s automatic framing technology intelligently adjusts the view to focus on speakers, enhancing engagement. The UCC-60 also incorporates advanced noise-cancellation microphones that filter out background noise, ensuring that distant participants can hear every word clearly.

On the other hand, the Dell UCP-60 and UCP-61 are designed to complement the UCC-60, focusing on audio solutions and collaboration tools. The UCP-60 offers an all-in-one speakerphone and microphone system that allows for hands-free communication. Its omnidirectional microphone captures audio from all directions, while high-fidelity speakers deliver clear sound. This device is perfect for huddle rooms, as it easily connects to laptops and mobile devices, allowing users to join meetings effortlessly.

The UCP-61 takes audio conferencing a step further with additional features. It supports wireless connectivity, allowing users to connect without the hassle of cables. The UCP-61 is also equipped with touch controls, enabling users to manage calls and adjust volume intuitively. Moreover, both UCP models are designed with portability in mind, making them easily transferable between different meeting spaces within an organization.

In terms of connectivity, these devices support USB-C, USB-A, and Bluetooth, making them compatible with a wide range of devices. Their user-friendly interface ensures that setup is straightforward, minimizing downtime and maximizing productivity.

Overall, Dell's UCC-60, UCP-60, and UCP-61 reflect the company’s commitment to fostering an effective, collaborative environment. Their integration of high-quality video, superior audio technology, and ease of use make them essential tools for any modern workspace, whether in-person or remote. As organizations continue adapting to hybrid work models, these solutions will play a crucial role in keeping teams connected and engaged.
Top Page Image Contents