Adaptec 5325301638 Administration Guide - Page 46

RAID Management Tools, Description, Function, Navigation Path

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RAIDs automatically uses the hot spare to rebuild itself without administrator intervention. Snap Servers offer two kinds of hot spares: local and global. Item Definitions Identifying Description Local hot spare - A local (or dedicated) hot spare is associated with and is available only to a single RAID. Administrators typically create a local hot spare for RAIDs containing mission-critical data that must always be available. Global hot spare - A hot spare that may be used for any RAID 1 or 5 in the system (assuming sufficient capacity) as necessary. Hot spares are identified on the Storage > Devices screen as follows: Hotspare of md0 (RAID 1) Global Hotspare for (md0, md1, md2) Interaction where the local hot spare is dedicated to a single RAID (md0), and the global spare is available to three RAIDs (md0, md1, and md2). When a drive in a RAID fails, the system looks for a hot spare in the following order: 1 If a local hot spare dedicated to the RAID exists, use the local hot spare. 2 If no local hot spare is available, and there is a single hot spare of sufficient capacity, use the global hot spare. 3 If no local hot spare is available, and two global hot spares of different capacity are available, use the smaller hot spare with sufficient capacity. RAID Management Tools The Snap Server offers several tools for configuring and monitoring RAIDs. Function Ongoing Maintenance E-mail Notification Navigation Path Navigate to the Storage > RAID Set screen, from which you can create, assess, edit, and delete RAIDs. The server can notify you when a RAID is degraded. This allows you to take action to ensure workflows are not disrupted (Settings tab). 32 Snap Server Administrator Guide

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RAIDs
32
Snap Server Administrator Guide
automatically uses the hot spare to rebuild itself without administrator
intervention. Snap Servers offer two kinds of hot spares: local and global.
RAID Management Tools
The Snap Server offers several tools for configuring and monitoring RAIDs.
Item
Description
Definitions
Local hot spare
— A local (or dedicated) hot spare is associated with
and is available only to a single RAID. Administrators typically create a
local hot spare for RAIDs containing mission-critical data that must
always be available.
Global hot spare
— A hot spare that may be used for any RAID 1 or 5
in the system (assuming sufficient capacity) as necessary.
Identifying
Hot spares are identified on the
Storage > Devices
screen as follows:
Hotspare of md0 (RAID 1)
Global Hotspare for (md0, md1, md2)
where the local hot spare is dedicated to a single RAID (md0), and the
global spare is available to three RAIDs (md0, md1, and md2).
Interaction
When a drive in a RAID fails, the system looks for a hot spare in the
following order:
1
If a local hot spare dedicated to the RAID exists, use the local hot
spare.
2
If no local hot spare is available, and there is a single hot spare of
sufficient capacity, use the global hot spare.
3
If no local hot spare is available, and two global hot spares of
different capacity are available, use the smaller hot spare with
sufficient capacity.
Function
Navigation Path
Ongoing Maintenance
Navigate to the
Storage > RAID Set
screen, from which you
can create, assess, edit, and delete RAIDs.
E-mail Notification
The server can notify you when a RAID is degraded. This
allows you to take action to ensure workflows are not
disrupted (Settings tab).