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UserGuide for Cisco Digital Media Manager5.4.x
OL-15762-05
Chapter19 Content Distribution and Delivery
Reference
Is the ACNS channel quota misconfigured?
Consider the following points when you configure the channel quota for DMS in CDM.
On each Content Engine, the total disk space for the channel must not exceed the CDNFS
disk space allocation.
The combined size of all content files in a channel must not exceed the amount of disk
space that you allocated for the channel in the Channel Quota field at Contents>
Channels> Definition.
Worksheet
Due to overhead, a file uses more disk space than its own size. You can anticipate how
much space to reserve for a file.
1.
What is the actual file size in kilobytes (KB)?
File size in KB =
2.
Divide the file size in KB by the file system’s fixed block size in bytes—a 4096-byte unit.
File size in KB / 4096 =
3.
Round up the quotient to the nearest integer. The result counts exactly how many 4KB
blocks the file has filled—or partially filled.
Used file system blocks =
4.
Multiply the total number of used file system blocks by 4096 bytes. The result measures
actual disk space consumption in bytes.
Total disk usage in bytes =
Note 4096bytes x 4 = 16384.
The integer 4 represents disk space that is reserved for internal system usage.
5.
Add 16384 to the total disk space consumption in bytes.
Minimum disk space to reserve =
Tip We recommend that you reserve 10 percent more space than you estimate the file will consume.
This
cushion ensures that space remains available to other internal system functions.