Inspur 3408 Series, Configuration Manual

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Fast initialization for quick array setup
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Continuous check on background data integrity
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SSD support enabled by SSD Guard™ technology
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Patrol read for media scanning and repairing
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32 logical drives
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DDF compliant configuration on disk (COD)
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S.M.A.R.T
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Global and dedicated HS with revertible HS support
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Automatic rebuilding
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Enclosure affinity
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Emergency SATA HS for SAS arrays
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Enclosure management - SES (in-band) - SGPIO (sideband)
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Databolt™ bandwidth optimizer technology support for compatible
expander-based enclosures
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Shielded state drive diagnostic technology
The built-in cache of Inspur SAS3508MR series plays an important role in improving
the performance of RAID controller cards. Data is directly written to the cache. The
RAID controller card then updates accumulated cache data to drives in batches.
The overall data write speed is higher since writing to the cache is faster than
writing to the drive. During data reading, if the user can directly retrieve data in the
cache, the disk seeking operation will be reduced and the response time will be
reduced from more than 6 ms to less than 1 ms, thereby enabling faster data
reading.
The following table lists the drive number limits and redundancies of different RAID
levels of Inspur SAS3508MR RAID controller card.
Table 2-2 Drive Number Limits and Redundancies of Different RAID Levels
RAID Level
Number of Drives
Supported
Number of Failed Drives Allowed
RAID 0 1 - 32 0
RAID 1 2 - 32 Number of drives/2
RAID 5 3 - 32 1
RAID 6 3 - 32 2
RAID 10 4 - 32 Number of spans
RAID 50 6 - 32 (2 - 8 for RAID 5) Number of spans