Table of Contents
Advertisement
5. If the drive is part of a defined RAID array, the array reconstruction (without
6. Use the Storage Manager software GUI to verify that the drive is shown in the
Upgrading drives
You can upgrade drives in the following two ways:
v By adding drives to empty slots in the storage server (see "Installing hot-swap
v By replacing existing drives with larger capacity drives
Adding larger-capacity drives
This section provides guidelines for upgrading the drives in the storage server.
Read the software documentation and this entire section to determine if you should
use this procedure, use a modified version of this procedure, or use a different
procedure that is provided by your operating system. Instructions that are provided
with your software should supersede anything stated in this document.
There are two methods for upgrading drives:
v Replacing all the drives at the same time
v Replacing the drives one at a time
The method you use depends on the following considerations:
v Which method most closely matches the recommended drive upgrade procedure
v Which RAID level is used on the affected drives (RAID 0 requires you to replace
hot-spare) or copy-back (with hot-spare) operation automatically starts.
Storage Subsystem Management window.
hard disk drives" on page 70)
This method requires that you back up the data on the affected drives and then
turn off the storage server. After replacing all the drives, you must reconfigure the
new drives and restore data from backup. See the procedure in "Replacing all
drives at the same time" on page 74.
This is the safest way to exchange drives without losing data. However, this
method might take a long time to complete because of the backup,
reconfiguration, and restoration processes. In addition, other users are not able
to use the storage server (or any expansion units attached to the storage server)
until you finish the procedure. You must use this method on RAID 0 logical
drives.
In this method, you manually fail each drive, replace it, and wait for the system to
restore data to the new drive before installing the next drive. After you install the
new drives, you can configure them to make the additional drive space available.
See the procedure in "Replacing the drives one at a time" on page 76.
Using this method, you can replace the drives while the storage server is
running, eliminating the down time that is required if you replace all the drives at
once. However, this method is more risky because you can lose data if the drive
restoration or storage subsystem reconfiguration process fails. In addition, the
reconstruction process might take a long time. This method works only on
redundant logical drives (RAID 1, 3, or 5). You cannot use this method with any
drives containing RAID 0 logical drives.
Consider backing up your data if you use this method. This safeguards your data
if the restoration and reconfiguration process fails or the new drive malfunctions.
that is provided in the operating system or the Storage Manager client
documentation
all the drives at the same time)
Chapter 5. Installing and replacing components
73
Advertisement
Table of Contents
