Adaptec 5325301656 Administration Guide - Page 70

Adding Disk Drives to a RAID, Hot Swapping Disk Drives, How RAIDs React to Disk Drive Additions

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Disks and Units Adding Disk Drives to a RAID This section describes how to safely add drives to an existing RAID 1, 5, 6, or 10. On Snap Servers, after a fresh drive is inserted into a drive bay, you must use the Administration Tool to add it to a RAID. How RAIDs React to Disk Drive Additions • RAID 0 (nonredundant) - You cannot add a drive to a RAID 0. To reconfigure a RAID 0, you must delete the RAID and then recreate it. • RAID 1 (redundant) - You can add a new drive to a RAID 1 as either a hot spare or as a new member. Adding a disk drive to a RAID 1 does not add storage capacity. The new member simply creates an additional copy of the original drive. • RAID 5, RAID 6, RAID 10 (redundant) - You can add a hot spare to a RAID 5; RAID 6, or RAID 10. However, you cannot add a new drive as a new member. Hot Swapping Disk Drives The term hot swap refers to the ability to remove and add components to a system without the need to turn off the server or interrupt client access to files. When to Hot Swap Disk Drives When available storage space is not at a premium, most administrators prefer to configure a RAID with a hot spare that automatically takes the place of a failed drive. This solution assures that client access to file systems is not interrupted. In environments where configuring a hot spare is not possible, you may need to hot swap a drive. Hot Swapping Disk Drives You can hot swap disk drives on Snap Server RAID 1, 5, 6, or 10 by following the two basic steps outlined next: 1 Remove the failed drive from its bay, and insert the new drive. The procedures for the physical removal and replacement of a disk drive for Snap Servers are explained in the following sections. Note If you have enabled the automatic incorporation of an unused disk feature, the drive you insert (a raw drive, a drive with a non-GuardianOS partition, or an unassigned GuardianOS-partitioned drive) will be automatically incorporated into the RAID. Skip Step 2. 56 Snap Server Administrator Guide

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Disks and Units
56
Snap Server Administrator Guide
Adding Disk Drives to a RAID
This section describes how to safely add drives to an existing RAID 1, 5, 6, or 10. On
Snap Servers, after a fresh drive is inserted into a drive bay, you must use the
Administration Tool to add it to a RAID.
How RAIDs React to Disk Drive Additions
•
RAID 0
(nonredundant)
—
You cannot add a drive to a RAID 0. To reconfigure a
RAID 0, you must delete the RAID and then recreate it.
•
RAID 1
(redundant)
—
You can add a new drive to a RAID 1 as either a hot spare
or as a new member. Adding a disk drive to a RAID 1 does not add storage
capacity. The new member simply creates an additional copy of the original
drive.
•
RAID 5, RAID 6, RAID 10
(redundant)
—
You can add a hot spare to a RAID 5;
RAID 6, or RAID 10. However, you cannot add a new drive as a new member.
Hot Swapping Disk Drives
The term
hot swap
refers to the ability to remove and add components to a system
without the need to turn off the server or interrupt client access to files.
When to Hot Swap Disk Drives
When available storage space is not at a premium, most administrators prefer to
configure a RAID with a hot spare that automatically takes the place of a failed
drive. This solution assures that client access to file systems is not interrupted. In
environments where configuring a hot spare is not possible, you may need to hot
swap a drive.
Hot Swapping Disk Drives
You can hot swap disk drives on Snap Server RAID 1, 5, 6, or 10 by following the
two basic steps outlined next:
1
Remove the failed drive from its bay, and insert the new drive.
The procedures for the physical removal and replacement of a disk drive for Snap
Server
s
are explained in the following sections.
Note
If you have enabled the
automatic incorporation of an unused disk
feature, the
drive you insert (a raw drive, a drive with a non-GuardianOS partition, or an
unassigned GuardianOS-partitioned drive) will be automatically incorporated
into the RAID. Skip Step 2.