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functional_diagram [2021/05/03 14:43] brandonm [25-GbE Network] Word, case, hyphenation, spacing, and phrasing fixes |
functional_diagram [2021/05/03 14:47] (current) brandonm [Cooling Fans] Spelling, phrasing, and word fixes |
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On Data Analytics (Hadoop/ | On Data Analytics (Hadoop/ | ||
- | The Data Analytics drives are removable and are located in the front of the case. Each Limulus system has eight front-facing, removable drive slots (Double-wide systems have sixteen). Each blade provides two SATA connections that are routed to the removable drive cage. At a minimum, each motherboard (including the main motherboard) has one of the drive slots occupied (for a total of four SSDs and eight SSDs for double-wide systems). Users can expand the HDFS storage (using the second drive slot) by adding additional SSD drives (either at time of purchase or in the future). | + | The Data Analytics drives are removable and are located in the front of the case. Each Limulus system has eight front-facing removable drive slots (double-wide systems have sixteen). Each blade provides two SATA connections that are routed to the removable drive cage. At minimum, each motherboard (including the main motherboard) has one of the drive slots occupied (for a total of four SSDs and eight SSDs for double-wide systems). Users can expand the HDFS storage (using the second drive slot) by adding additional SSD drives (either at time of purchase or in the future). |
====Cooling Fans==== | ====Cooling Fans==== | ||
- | There are seven cooling fans in each case (eleven in the double-wide systems). Four of these fans are on the processor cooler (heat-sync). These fans are controlled by the motherboard on which they are housed (i.e. as the processor temperature increases, so does the fan speed). | + | There are seven cooling fans in each case (eleven in the double-wide systems). Four of these fans are on the processor cooler (heat sink). These fans are controlled by the motherboard on which they are housed (i.e. as the processor temperature increases, so does the fan speed). |
- | There are two large fans on the bottom of the case. These fans pull air from underneath the case and push it into the three worker blades. The fans, using a " | + | There are two large fans on the bottom of the case. These fans pull air from underneath the case and push it into the three worker blades. The fans are attached to an auxiliary fan port on the main motherboard |
The remaining fan is on the back of the case and runs at constant speed. This fan is used to help move air through the case. | The remaining fan is on the back of the case and runs at constant speed. This fan is used to help move air through the case. | ||