Sun Microsystems Netra X4200 M2, Руководство по обслуживанию

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Appendix E Serial Attached SCSI BIOS Configuration Utility 195
Performing RAID Configuration Tasks
This section contains the following information and instructions for using the
Configuration Utility to set up RAID:
■
“Creating a RAID 0 Volume” on page 195
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“Creating a RAID 1 Volume” on page 196
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“Creating a Second RAID Volume” on page 198
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“Viewing RAID Volume Properties” on page 198
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“Managing Hot-Spares” on page 197
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“Synchronizing an Array” on page 199
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“Activating an Array” on page 199
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“Deleting an Array” on page 199
■
“Locating a Disk Drive” on page 200
Note – The RAID firmware needs at least 64 Mbytes of unused disk space at the end
of each drive to store metadata.
Creating a RAID 0 Volume
A RAID 0 volume, also referred to as Integrated Striping (IS), offers the ability to
stripe data across multiple hard disks. This can increase storage capacity and
performance by combining multiple disks into one logical volume.
Note – Use RAID 0 with caution. The only advantage of RAID 0 is to improve the
overall disk performance by striping data over several disk drives. By doing this, it
decreases reliability because the failure of any drive within the striped volume
results in a complete loss of data. In addition, any disk drive included in a RAID 0
volume becomes non-hot-swappable.
Follow these steps to create a RAID 0 volume on an adapter that does not currently
have a volume configured.
1. In the Configuration Utility, select an adapter from the Adapter List screen.
2. Select the RAID Properties option.
3. When you are prompted to create either an IS volume or an IM volume, select
Create IS Volume.
The next screen shows a list of disks that can be added to a volume.