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Media Flow Controller and Media Flow Manager Installation Guide
Media Flow Controller also attempts to identify the HDD type: SAS, SATA, or SSD. With this
information, Media Flow Controller assigns a cache tier to each cache. Cache tiers are the
way Media Flow Controller divides the storage of "hot content" (frequently accessed) from
"long-tail content" (infrequently accessed).
Important!
number, or type.
Choosing a Controller for Your Media Flow Controller
Media Flow Controller has been tested with, and supports, a wide range of Host Bus Adapters
(HBAs) including those made by Intel™, 3ware™, LSI™, Adaptec™ as well as OEM (original
equipment manufacturer) cards by IBM™, HP™ (SmartArray™), Dell™ (Perc™), Sun™, and
the controllers typically found in SuperMicro™ based systems.
The best controller for your Media Flow Controller depends upon the number and type of
HDDs in your system, as well as factors such as connecting to an external JBOD. Generically,
Media Flow Controller is most compatible with HBAs that support standard SCSI pass-
through, assign standard Linux device names (that is, /dev/sda, /dev/sdb, and so forth), and
allow arrays of one physical disk to be created.
Configuring the Controller and Arrays for Optimum Performance
For controllers that require arrays or virtual disks to be defined before physical disks are
presented to the BIOS, and so to the operating system, and be set as bootable, you must
configure the Controller BIOS to prepare the hard drives to be caches. To do this:
•
Set up each physical HDD as an individual array or virtual disk (sometimes you must set
up a RAID 0 of one drive).
•
Disable write-cache.
For controllers that do not require arrays or virtual disks to be defined (that is, LSI 1068e with
Software RAID disabled), no explicit configuration is required.
Related Topics
•
"Accessing the Console Port" on page
•
"System Requirements" on page 16
•
"Example: Machine Setup" on page 16
Accessing the Console Port
We recommend you use the Serial Console for first-time access and installation. To access
the console port:
•
Set your initial console terminal settings to match the default console settings on Juniper
Networks Media Flow Controller:
•
9600 baud rate
•
No parity
•
8 data bits
•
1 stop bit
•
No flow control (console port only)
With RAID enabled, Media Flow Controller cannot determine HDD's serial
15.
Accessing the Console Port
CHAPTER 2 Getting Started
15
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