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RLL

   Also found in: Medical, Acronyms, Wikipedia 0.01 sec.

(Run Length Limited) An encoding method commonly used on magnetic disks, including RLL, IDE, SCSI, ESDI, SMD and IPI interfaces. The actual number of bits recorded on the disk is greater than the data bits. Earlier drives inserted extra bits into the data stream so there was more space between signals when reading the data back. As electronics improve, fewer extra bits are inserted, and the ratio of data bits to recorded bits becomes greater.

The "run length" is the number of consecutive 0s before a 1 bit is recorded. For example, RLL 1,7 means there must be at least one 0 between every 1, and the 7 means a maximum of eight time periods between flux transitions. See hard disk.

1.(language)RLL - Representation Language Language.
2.(storage)RLL - Run Length Limited.


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RLL encoding typically achieves about 67% efficiency.
LTO & SDLT: built SAN tough by Brinkman, Peter N. / Computer Technology Review
Ordonez, 31, owner of RLL Services, made fraudulent claims of the amount of Child and Dependent Care Credits his clients were eligible for, allowing his clients to get larger tax returns, officials said.
BRIEFLY by Daily News (Los Angeles, CA)
A second controller technology, RLL (Run Length Limited) provided higher capacities--a drive that would provide 20MB of capacity as an MFM drive can store 30MB if configured for RLL.
Serial ATA Will Implement Next Generation Performance By ... by Brownstein, Mark / Computer Technology Review
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