3Ware 3W-6800 User Guide - Page 42

Select striping size, Select write cache properties, BIOS Initialization Screen for RAID 5

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3ware Escalade Storage Switch User Guide a single disk, to avoid throughput loss due to corrections for the parity drive. RAID 5 arrays requires a minimum of three drives. Configurations consist of 3, 4, 5, 6, 7 or 8 drives. 3ware Disk Array Configuration Available Drives: Port 0 - QUANTUM FIREBALLP KX27.3 512 M Disk Arrays: Array Unit 1 - 3 drive 64K RAID 5 Port 1 - IBM-DTLAI-n3i8t78R1A5ID5 Array Unit Port 2 - IBM-DTLA-387815 Port 3 - IBM-DTLA-387815 1.0GB 5112 M 512 M 512 M Percentage done : 25% Create Array Delete Array Maintain Array Rebuild Array Alt-F1 Help Previous/Next $ Toggle Hot Spare EnterSelect/Deselect F6 Restore Initial Values Esc Cancel F8 Done Figure 12. BIOS Initialization Screen for RAID 5 Select striping size For a RAID 1 or RAID 10 configuration select the striping size. Sizes of 64K, 128K, 256K, 512K or 1M are selected using the Stripe Size box shown in Figure 10. RAID 5 only allows a 64K stripe size. Select write cache properties The Escalade Storage Switch gives you a choice of disabling the write cache for your disk arrays. Write cache is used to store data locally on the drive before it is written to the disk, allowing the computer to continue with its next task. Enabling the write cache results in the most efficient access times for your computer system. 32 www.3ware.com

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3ware Escalade Storage Switch
User Guide
32
www.3ware.com
a single disk, to avoid throughput loss due to corrections for the
parity drive.
RAID 5 arrays requires a minimum of three
drives.
Configurations consist of 3, 4, 5, 6, 7 or 8 drives.
Figure 12.
BIOS Initialization Screen for RAID 5
Select striping size
For a RAID 1 or RAID 10 configuration select the striping size.
Sizes of 64K, 128K, 256K, 512K or 1M are selected using the
Stripe Size
box shown in Figure 10. RAID 5 only allows a 64K
stripe size.
Select write cache properties
The Escalade Storage Switch gives you a choice of disabling the
write cache for your disk arrays. Write cache is used to store data
locally on the drive before it is written to the disk, allowing the
computer to continue with its next task. Enabling the write cache
results in the most efficient access times for your computer system.
Restore Initial Values
Previous/Next
Toggle Hot Spare
Cancel
Select/Deselect
Done
Alt-F1
F6
Enter
F8
$
Esc
Help
3ware Disk Array Configuration
Create Array
Delete Array
Maintain Array
Rebuild Array
Available Drives:
Port 0 - QUANTUM FIREBALLP KX27.3
512 M
Disk Arrays:
Array Unit 1 - 3 drive
64K RAID 5
1.0GB
Port 1 - IBM-DTLA-387815
Port 2 - IBM-DTLA-387815
Port 3 - IBM-DTLA-387815
Init RAID5 Array Unit
1
Percentage done :
25
%