|
Hours in use
|
The total number of hours that this media has been in use.
|
|
Used capacity
|
The amount of raw capacity on the media that has been used. Used
Capacity is calculated by subtracting Available Capacity from Total
Capacity.
Used Capacity may or may not equal Bytes Written.
|
|
Available capacity
|
The amount of expected raw capacity on the media that remains
unused. Some tape devices support the ability to read the amount of
remaining capacity of the media that is currently loaded in the
device. If a tape device supports reading of the remaining capacity
amount, then Available Capacity is derived from the remaining
capacity amount. Otherwise, Available Capacity is calculated by
subtracting Bytes Written from Total Capacity.
Because Free Space is reported in terms of unused raw capacity,
review Bytes Written and Compression Ratio to better estimate if
there is enough free space to accommodate a specific job.
|
|
Total capacity
|
The amount of expected total raw capacity of the media. Some
tape devices support the ability to read the amount of total
capacity of the media that is currently loaded in the device. If a
tape device supports reading of the total capacity amount, then
Total Capacity is derived from the total capacity amount.
Otherwise, Total Capacity is estimated based on past usage of the
media.
|
|
Compression ratio
|
The ratio of Bytes Written to Used Capacity. Compression ratio
will show the overall effect that data compression and media flaws
are having on the amount of data that is being stored on the
media.
|
|
Bytes written
|
The amount of data that has been written into blocks on the
media. Bytes Written may differ from Used Capacity due to the
effects of data compression and media flaws. Data compression will
tend to increase Bytes Written when compared to Used Capacity.
Media flaws will decrease Bytes Written when compared to Used
Capacity.
|
|
Bytes read
|
Number of bytes that have been read from this media.
|
|
Mounts
|
Number of times this media has been mounted.
|
|
Seeks
|
The total number of seek operations (performed when a specific
piece of information is being located) that have been performed on
this media.
|
|
Seek errors
|
The number of errors encountered while trying to locate
data.
|
|
Soft write errors
|
The number of recoverable write errors encountered. If you
receive soft errors, it may indicate the beginning of a problem. If
you receive excessive errors for your environment, check the media
for damage.
|
|
Hard write errors
|
The number of unrecoverable write errors encountered. If you
receive hard errors, check the media for damage.
|
|
Soft read errors
|
The number of recoverable read errors encountered. If you
receive soft errors, it may indicate the beginning of a problem. If
you receive excessive errors for your environment, check the media
for damage.
|
|
Hard read errors
|
The number of unrecoverable read errors encountered. If you
receive hard errors, check the media for damage.
|
