3Ware 3W-6800 - Escalade 6800 RAID Controller, User Manual

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Introduction
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R5 Fusion
TM
Technology significantly improves RAID 5 write
performance
3ware’s R5 Fusion significantly improves RAID 5 write perfor-
mance for both large sequential and small random transactions.
This advanced block caching firmware technology is combined
with StorSwitch to deliver extremely high performance for RAID 5
write operations.
Note:
R5 Fusion is available only with Escalade 7450
and 7850 storage switches.
Background Media Scan and Dynamic Sector Repair enhance
data integrity
Background Media Scan is an embedded feature that performs a
read-scan of all disks in an array. An error notification is posted for
each read error detected (see “Screen Display Messages” on
page 145). If the array is redundant (i.e., RAID 1, 10 and 5)
Dynamic Sector Repair automatically recovers the redundant data
and rewrites it to the logical defective location. The drive reallo-
cates the sector where the read error occurred and a notification of
repair is posted. This results in the restoration of drive and data
integrity; the primary and redundant data are again both valid.
Configure and manage your disk arrays
The 3ware Disk Array Configuration Utility is a BIOS level tool
for creating, deleting, maintaining disk arrays and rebuilding mir-
rored arrays. From the 3DM Disk Array Configuration Utility,
you can also specify hot spares from available drives to be dynami-
cally substituted for a failed drive in a mirrored array. Refer to the
3ware Disk Array Configuration Utility chapter.
SMART Monitoring (Self-Monitoring, Analysis and Reporting
Technology) adds monitoring and troubleshooting functionality by