American Megatrends ManageTrends 2.7, Руководство пользователя

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StorTrends® 1300 User’s Guide (StorTrends iTX version 2.7) 194
Performance Trending
Performance data at various levels of the I/O stack is collected and presented for both
immediate analysis and statistical review. A few items worth special mention are as
follows:
•
Read and write performances of the volumes. This information is collected.
•
In-depth analysis of the instantaneous read and writes performance values. It gives
the user information about the contributions of different I/O sizes towards the total
I/O activity going on at the moment. The I/O sizes chosen are 512 byte, 4K, 8K and
64K reads or writes.
•
I/O latency monitoring and analysis. Today with so many SATA drives populating a
single 2U or 3U enclosure, vibration stability becomes an issue. SATA drives, with
their dense track densities, are very intolerant to vibrations, which can result in long
recovery cycles and ultimately result in the RAID controller reporting the drive as
FAILED . Tracking I/O latencies is a very key attribute to detecting any such looming
failures.
•
Hardware health monitoring and tracking S.M.A.R.T. indications. Various key
parameters like enclosure temperature, Power supply, Fans and so on are
continuously monitored.