Download Mylex AcceleRAID 250 Technical information

Glossary
Megabit
A million bits, used as a common unit of measure relative to time in seconds
as an expression of a transmission technology's bandwidth or information
flow capacity. Megabits per second (Mbps) is a frequent measure of
bandwidth on a transmission medium.
Megabyte (Mbyte)
1,000,000 (106) bytes, assuming 1K = 1000 bytes
1,048,576 bytes, assuming 1K = 1024 bytes
Mirrored Cache
A cache memory that has duplicate data from another controller. In the event
of failure of the original controller, the second controller can take the cached
data and place it on the disk array.
Mirroring
Refers to the complete duplication of data on one disk drive to another disk
drive, this duplication occurring simultaneously with each read and write
operation. Each disk will be the mirror image of the other This is also know
as RAID level 1. All Mylex RAID controllers support mirroring.
MTBF
Mean Time Between Failures, the average time from start of use to failure in
a large population of identical systems, computers, or devices.
MTDL
Mean Time until Data Loss, the average time from startup until a component
failure causes a permanent loss of user data in a large population of disk
arrays.
Narrow SCSI
8-bit wide standard SCSI.
Manual No. 775029
G-17