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11
Figure 4. RAID 5 Configuration Example
R5 Fusion
TM
Technology significantly improves RAID 5
write performance
3ware’s R5 Fusion significantly improves RAID 5 write performance 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. This performance improvement is
applicable to only the first RAID 5 array on the RAID controller. Additional
RAID 5 arrays on the RAID controller will not benefit from the R5 Fusion
technology.
Note:
R5 Fusion is available only with Escalade 750x and 8508
ATA RAID Controllers.
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 mirrored arrays.
From the
3DM Disk Array Configuration Utility
, you can also specify hot
spares from available drives to be dynamically substituted for a failed drive in
a mirrored array. Refer to the
3ware Disk Array Configuration Utility
chapter.
S.M.A.R.T. Monitoring
(Self-Monitoring, Analysis and Reporting
Technology) adds monitoring and troubleshooting functionality by
automatically checking a disk drive's health and reporting potential problems.
It allows you to take proactive steps to prevent impending disk crashes.
SMART data is checked on all disk drives (array members, JBOD and Hot
Spares). Three SMART commands are issued: SMART RETURN STATUS
(B0h with a Feature register value of DAh), SMART READ LOG (B0h with
the content of the Features register equal to D5h), and SMART READ DATA
(B0h with the content of the Features register equal to D0h).
■
SMART RETURN STATUS - This command is issued 24 hours after the
Escalade controller is powered up. This 24 hour wait period is timed
RAID 5
A Blocks
0 parity
A4
A3
A2
A1
1 parity
B4
B3
B2
2 parity
C4
C3
C1
3 parity
D4
D2
D1
4 parity
E3
E2
E1
B0
C0
D0
E0
B Blocks
C Blocks
D Blocks
E Blocks
Summary of Contents for 8006-2LP - Escalade RAID Controller
Page 6: ...iv 3ware Escalade ATA RAID Controller User Guide ...
Page 14: ...Before You Begin 6 3ware Escalade ATA RAID Controller User Guide ...
Page 24: ...Quick Installation Guide 16 3ware Escalade ATA RAID Controller User Guide ...
Page 68: ...Windows Installation 60 3ware Escalade ATA RAID Controller User Guide ...
Page 86: ...FreeBSD Installation 78 3ware Escalade ATA RAID Controller User Guide ...
Page 104: ...3DM Disk Management Utility 96 3ware Escalade ATA RAID Controller User Guide ...
Page 116: ...Troubleshooting Problems and Solutions 108 3ware Escalade ATA RAID Controller User Guide ...
Page 126: ...Index 118 3ware Escalade ATA RAID Controller User Guide ...