HP StoreEver TapeAssure Software - Manual (Page 56)

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Environment
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Performance
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Usage
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History
Identity
This section shows the identification of both the drive and the interfaces. The Format entry also
indicates compatibility.
Health
This section is split into two main sections: Device Analysis and Write/Read margin data.
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The Device Analysis section shows the output of the device rules. This is the first place to look
for health information and advice on corrective action.
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The Write/Read margin data section shows the write and read margin of the last five tapes
(current and previous four tapes).
◦ The summary line (top line of this section) shows the average and worst margin values
found in the available history. The Current tape and four Previous tape lines show margin
information for the last five tapes used. If there is a margin warning for one tape, then
that suggests a suspect tape. Cross check with the cartridge history below or try the tape
in another drive. If there is a margin warning for all tapes then the drive itself is suspect.
Try cleaning the drive and run the Drive Assessment test to check the drive.
◦ The Head life, Reposition life, and Load/unload life lines show life figures for the drive.
Configuration
This section shows configuration information for the drive and its associated interface controller.
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In the Drive section, useful configuration information is listed which can assist with
troubleshooting potential drive problems. For example, the report records the current data
compression setting of the drive, and whether the backup application has prevented media
removal.
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In the Interface section, verify that the negotiated burst rate is as expected. This value should
match the data shown for the interface controller in the Drive Identity section (the name of the
controller generally indicates the maximum speed that the interface can handle).
Environment
This section shows temperature data for the drive. Verify that all temperatures shown are within
normal limits.
Performance
This section shows burst performance figures for the drive, and estimated native performance
figures for the last four tapes.
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Maximum data rates show the highest rate that the data compression engine has seen. Figures
are high because of buffering. These values show the maximum possible rates with very high
compression ratios.
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Average data rates before compression are what the host has seen. Average rates after
compression are the native rates for the tape.
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Write and read compression ratios are calculated over the same data. These figures are reset
on tape load, in which case Unknown is shown.
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Performance figures are estimated from various drive logs.
56 Installing and using L&TT on Windows