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Software Installation and User’s Guide
ICP RAID Navigator
loss. Some expansions take a long time, so it is advisable that there be a minimal
amount of traffic on the system.
11.5.15
Add Hot Fix
Click the right mouse button on the array drive icon.
Use this option to add a hot fix drive to an array drive (RAID 1/4/5/10). Add a
private hot
fix
drive or a
pool hot fix
drive. Private hot fix drives are assigned to a specific array drive
and are activated if a member of this array drive fails. Pool hot fix drives can be used by
any array drive with pool hot fix access enabled. RAID 1 array drives allow only pool hot
fix drives. After choosing the type of hot fix drive, you can select a physical drive from
the box that shows all suitable drives.
Figure 11-144. Add Hot Fix Drive
The capacity of the hot fix drive has to be larger or equal than the capacity of the
components of the array drive. For example: The logical drives of the array drive have
4.2GB capacity, thus the capacity of the hot fix drive has to be 4.2GB or larger.
The spindle motor of the hot fix drive is normally stopped (for example, when the hot fix
drive is not needed). Thus, it may take a few seconds to get a response when you click on
that drive.
Some general notes on hot fix drives.
One of the reasons RAID array drives are used, lies with the data
r
edundancy they
provide, that is, the data security you have in the event of a hard disk failure. For the
purpose of the following considerations, we define the term
time without redundancy
(
TWR) as the time it takes to replace a failed hard drive (assuming there is no hot fix drive
installed in the system). The time without redundancy should be kept as short as possible,
not including the time needed to set up the array drive (state
build
).
Let us assume that one of the hard disks of a RAID 5 array drive fails. The array drive is
without redundancy. TWR begins. Any superfluous prolongation of the TWR (because
you have to get a replacement hard disk or because no one checked the file server)
increases the risk of data loss should a second hard disk fail. Therefore, new redundancy
should be created as soon as possible and in an entirely automated manner. Integrate a hot
fix drive as an immediately available and auto-replacing hard disk to keep the TWR as
short as possible. Only a hot fix drive can ensure optimal array drive security and constant
Summary of Contents for 2074700-R - ICP Vortex GDT8514RZ RAID Controller
Page 1: ...Preliminary ICP RAID Software Software Installation and User s Guide Version 1 2 7 June 2003 ...
Page 23: ...Software Installation and User s Guide 23 Introduction ...
Page 68: ...68 Software Installation and User s Guide Installing Linux ...
Page 92: ...92 Software Installation and User s Guide Installing Berkeley UNIX FreeBSD ...
Page 214: ...214 Software Installation and User s Guide Fibre Channel Features ...