Quantum Lattus S20 Bedienungsanleitung

Replacing Decommissioned Disks

in a Lattus Storage Node

Each Lattus Storage Node contains the following customer replaceable units (CRUs):

l12 hard disk drives

l2 power supplies

The instructions in this document describe how to replace decommissioned hard disk drives in a Lattus

storage node.

or adaptations without prior written authorization of Quantum Corporation is prohibited by law and constitutes a punishable

violation of the law. Artico, Be Certain (and the Q brackets design), DLT, DXi, DXi Accent, DXi V1000, DXi V2000, DXi

V4000, DXiV-Series, FlexTier, Lattus, the Q logo, the Q Quantum logo, Q-Cloud, Quantum (and the Q brackets design), the

Quantum logo, Quantum Be Certain (and the Q brackets design), Quantum Vision, Scalar, StorageCare, StorNext,

SuperLoader, Symform, the Symform logo (and design), vmPRO, and Xcellis are either registered trademarks or trademarks

of Quantum Corporation and its affiliates in the United States and/or other countries. All other trademarks are the property of

their respective owners. Products mentioned herein are for identification purposes only and may be registered trademarks

or trademarks of their respective companies. All other brand names or trademarks are the property of their respective

owners. Quantum specifications are subject to change.

6-68540-02 Rev A, March 2017

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 2

Locating Lattus Storage Nodes

When you're ready to replace CRUs in your Lattus Storage Nodes, you can physically locate the storage

nodes in your data center by doing the following in the Lattus CMC to illuminate the nodes' Location LEDs:

1. Determine which Lattus Storage Node contains the failed CRU.

a. If a power supply has failed, the Live Events section of the Dashboard lists the name of the node

containing the failed power supply the Node column.

b. If you have decommissioned drives that need to be replaced, navigate to Dashboard >

Administration > Hardware > Disks > Decommissioned. The names of the nodes with

decommissioned disks are listed in the Machine column.

2. Navigate to the Storage Nodes:[storage node name] screen.

a. If you're trying to locate a Lattus Storage Node that contains decommissioned disks, just click the

name of the node in the Decommissioned Disks screen's Machine column.

b. If you need to turn on the Location LED for a Lattus Storage Node that contains a failed power

supply, select Dashboard > Administration > Hardware > Servers > Storage Nodes to

access the Storage Nodes screen, then click the Lattus Storage Node you would like to locate.

3. In the Commands pane of the Storage Node: [storage node name] screen, select the Location

LED On radio button. This illuminates the Lattus Storage Node's Location LED. After replacing CRUs,

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 3

turn off the Location LED by selecting the Location LED OFF radio button.

4. You can now locate the selected Lattus S10 or original S20 Storage Node at the data center by its

illuminated Location LED.

For Lattus S20 Model 2, S30 or S50 storage nodes, the Location LED is located on the left side of the front

panel.

The S20 Model 2, S30 and S50 also have a Location LED located on the rear of the node near the

VGA port. When you press the Location button, the blue LED illuminates.

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 4

Getting Started

Replacements for your decommissioned disks are shipped to you when required.

Replacing disks in a storage node involves these steps:

lExporting the Decommissioned Disk Details on the next page

lShutting Down the Lattus Storage Node on page 7

lRemoving the Lattus Storage Node from the Rack on page 7

lReplacing Disks in the Lattus S10 or S20 on page 9

lReplacing Disks in the Lattus S20 Model 2, S30 or S50 on page 11

lReinstalling a Lattus Storage Node in a Rack on page 14

lBooting the Lattus Storage Node on page 14

lRepurposing a Disk on page 15

lWhat to Do When You're Finished Replacing Disks in the Lattus Storage Node on page 16

WARNING: Opening or removing the Lattus Storage Node cover while it is powered on may expose

you to a risk of electric shock.

Caution: When replacing items from the inside of the chassis, ensure that you take precautions to

prevent Electrostatic Discharge (ESD).

Note: Unless otherwise specified, the procedures in this section apply to all Lattus storage nodes (S10,

Lattus S20, Lattus S20 Model 2, S30 and Lattus S50).

Caution: If you need to replace disks in multiple storage nodes, shut down and replace the disks one

node at a time. If you shut down too many storage nodes at once, data unavailability may occur.

Be especially careful when replacing storage nodes disks in systems that have a small number of

storage nodes, such as a 6-node system.

If the spread width is larger than the number of storage nodes, turning off one or more storage nodes

can have a serious impact on Lattus availability. The moment the actual disk safety becomes negative,

your Lattus installation is no longer accessible.

Follow these guidelines if you must replace disks in an environment with a small number of storage

nodes:

1. Turn off only one node at a time.

2. Replace the disk(s).

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 5

3. Switch on the node.

4. When the node is fully operational, wait at least five minutes before turning off the next node.

Prerequisites

lA Philips screwdriver.

lA number of new storage disks equal to the number of disks that need to be replaced.

The new disk must meet the following properties:

lThe spare disk has to be clean (no partitions)

lThe disk size of the new disk has to be the same or higher than the original one.

Note: To see an overview of how to replace a decommissioned disk in an S10/S20 Storage Node,

review the video "Lattus: Replacing Decommissioned Disks in an S10/S20 Storage Node” by

clicking here to access the Lattus Documentation Center, and then select Learn > Videos >

Lattus CRU Hardware Replacement Videos.

Exporting the Decommissioned Disk Details

To properly identify decommissioned disks within a Lattus Storage Node, you must print the details for the

decommissioned disks from the Lattus CMC:

1. Navigate to Dashboard > Administration > Hardware > Disks > Decommissioned.

2. In the Decommissioned Disks screen, select the check boxes next to the decommissioned disks.

3. In the Commands pane, click one of the following:

a. Export details as PDF: A PDF with all the necessary details is generated.

Note: This feature is currently disabled and will be enabled again in a future Lattus release. In

the meantime, use the emailed pdf method described below.

b. Mail details: specify an email address. A generated PDF with the necessary details is sent to that

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 6

email.

Note: To use this “Mail details” option, an smtp server must be configured. This is typically

configured when the management controller node is initialized. For more information about

configuring the smtp server, refer to “Finalizing the Cloud Service Setup” in the Lattus Installation

and Configuration Guide.

4. Once you've determined which Lattus Storage Node contains the decommissioned disks that need to

be replaced, turn on its Location LED by following these steps:

a. select Dashboard > Administration > Hardware > Servers > Storage Nodes to access the

Storage Nodes screen.

b. Click the Lattus Storage Node you want to locate.

c. In Commands pane of the Storage Node: [storage node name] screen, click the Location LED

On radio button. This will illuminate the Lattus Storage Node's Location LED.

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 7

Note: After replacing the failed component, turn off the Location LED by clicking the Location

LED OFF radio button.

d. You can now physically locate the selected Lattus Storage Node at the data center by finding the

storage node whose Location LED is illuminated.

Shutting Down the Lattus Storage Node

Before replacing disks inside a Lattus Storage Node, you must shut down the node that requires disk

replacement (as identified in the previous step).

If you need to replace disks in multiple storage nodes, follow the steps below for shutting down and replacing

the disks one node at a time.

Caution: Do not shut down more than one Lattus Storage Node at a time. If you shut down too many

storage nodes at once, data unavailability may occur.

1. In the Lattus CMC, navigate to Dashboard > Administration > Hardware > Servers > Storage

Nodes.

2. When the list of storage nodes appears, select the node you want to shut down. After you do so, several

command options appear on the right side of the screen.

3. When the list of storage nodes appears, select the node you want to shut down. After you do so, several

command options appear on the right side of the screen.

Removing the Lattus Storage Node from the Rack

To replace the disks in a Lattus Storage Node, you must remove it from the rack completely. To remove it

from the rack, follow these steps:

1. Once the Lattus Storage Node has been successfully shut down, go to the data center and locate the

Lattus Storage Node that contains disks that need to be replaced (look for the illuminated Location

LED).

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 8

Figure 1: Location LEDs on a Lattus S10 or S20

Figure 2: Location LEDs on a Lattus S20 Model 2, S30 or S50

2. Detach the safety on the power cables and unplug them from the Lattus Storage Node's power

supplies.

Note: If they are not labeled already, mark the power cables to differentiate between the two to

ensure that you reconnect the power cables to the correct power supplies when you reinstall the

Lattus Storage Node.

3. Disconnect the network cables from the Lattus Storage Node's network ports.

Note: If labels or different colored network cables were not used to identify the network cables,

mark them before unplugging them so you can differentiate between them when you reconnect

them later.

The example below shows how the network cables for a Lattus S10/S20 might be labeled to

identify which one connects to Eth0, and which one connects to Eth1. This ensures that the ports

on the Lattus Storage Node are reconnected to the correct ports on the Lattus Rack Switches.

4. Unscrew the two front screws.

5. Slowly slide the Lattus Storage Node out until you reach the pull-safety (you will hear a soft clicking

sound).

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 9

6. Push the pull-safety on both sides of the Lattus Storage Node, and slide the node out until you see the

split line between the two top covers.

7. Remove the Lattus Storage Node from the rack completely.

Caution: Once you pull the node past the pull-safety, don't leave the node in the rack. Otherwise

the rack rails might break.

8. Unscrew the four screws from the Lattus Storage Node's top plate and carefully slide it off.

Replacing Disks in the Lattus S10 or S20

Once you have removed the Lattus Storage Node from the rack, follow these steps to replace the

decommissioned disk(s) in a Lattus S10 or S20.

Note: If you are replacing disks in a Lattus S20 Model 2, S30 or S50, see Replacing Disks in the Lattus

S20 Model 2, S30 or S50 on page 11

1. Using the decommissioned disk details report you exported from the Lattus CMC, identify the disks that

need to be replaced.

Note: The report shown in the illustration shows a disk drive with a 3.00 TB capacity. Lattus also

uses disk drives with 4.00 TB and 6.00 capacity. Be sure to obtain the correct capacity drive for

replacement.

All disk drives in a Lattus Storage Node must be the same capacity, meaning either all 3 TB drives,

all 4TB drives, or all 6 TB drives. Mixing 3 TB, 4 TB drives and 6 TB drives in the same storage

node is not currently supported.

Caution: Always check and confirm the serial numbers of the disks to verify that you're replacing

the right ones.

Caution: Be sure the storage capacity of the replacement drive(s) matches the drive(s) you are

replacing. For example, do not install a 4 TB or 6 TB replacement drive into a Lattus S10 Storage

Node, and do not install a 3 TB or 6 TB replacement drive into a Lattus S20 Storage Node.

Locating Lattus Storage Nodes

Lattus Replace Decommissioned Disks 10

2. Unscrew the disk from the Lattus Storage Node and slide it out by pulling the handle towards the front

of the storage node. Do not pull upwards on the handle.

3. Remove the disk from its drive sled by unscrewing the screw holding the drive to the sled.

4. Screw the new disk into the drive sled and place it into the Lattus Storage Node.

Note: There are four posts that must be inserted into the four holes on the bottom of the drive sled

when you install the drive into the storage node. The drive will not sit flush in the storage node

unless all four posts are inserted with the four holes.

The following illustration shows the four posts that must be inserted into the four holes on the bottom of

the drive sled.

5. Repeat steps 2 through 5 for each disk that must be replaced.

6. When all of the decommissioned disks have been replaced, slide the top plate back on the Lattus

Storage Node and screw it back onto the node tightly.

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