Configuring Your Server 4-39
Virtual Disk
Virtual disk is a logical drive defined in disk group. It is recognized as a physical drive by OS. The
allowable number of virtual disks is up to 16 per disk group, or up to 64 per controller.
The figure below shows a sample configuration in which the Onboard RAID Controller (LSI
Embedded MegaRAID
™
) or Optional RAID Controller is connected with three hard disk drives,
creating one Disk Group. Two RAID0 virtual disks (VD) are defined in the Disk Group.
HDD 1
(36 GB)
HDD 2
(36 GB)
HDD 3
(36 GB)
RAID Controller
DG0 108GB
VD0 (RAID0)
60GB
VD1 (RAID0)
48GB
VD0-1
20GB
VD0-2
20GB
VD0-3
20GB
VD1-1
16GB
VD1-2
16GB
VD1-3
16GB
Parity
The parity means redundant data. A single set of redundant data is created from the data saved in
more than one hard disk drive.
The created redundant data is used for data recovery when a hard disk drive is defected.
Hot-Swap
The hot-swap enables a hard disk drive to be removed (or replaced) under system operation.
Hot-Spare
The hot-spare is prepared as an auxiliary hard disk drive substituting for a defected hard disk drive
included in a logical drive which is configured at a redundant RAID level. Detecting a hard disk
drive fault, the system disconnects the hard disk drive (or makes it offline) and starts rebuild using
the hot-spare.
Summary of Contents for Express5800/R120b-1
Page 20: ...Notes on Using Your Server 1 3 3 5 inch disk model...
Page 87: ...3 24 Setting Up Your Server This page is intentionally left blank...
Page 268: ...6 14 Installing and Using Utilities Windows Server 2003...
Page 296: ...7 14 Maintenance This page is intentionally left blank...
Page 350: ...8 54 Troubleshooting When you use a remote console 6 Each tool is selected and it starts...
Page 438: ...9 82 Upgrading Your Server This page is intentionally left blank...
Page 450: ...C 2 IRQ This page is intentionally left blank...
Page 474: ...D 24 Installing Windows Server 2008 R2 4 Activate Windows The Windows activation is complete...
Page 504: ...E 28 Installing Windows Server 2008 4 Activate Windows The Windows activation is complete...
Page 564: ......
Page 566: ...H 2 Using a Client Computer Which Has a CD Drive This page is intentionally left blank...
Page 576: ...I 10 Accessing Power and Performance Data This page is intentionally left blank...
Page 580: ...J 4 Product Configuration Record Table This page is intentionally left blank...