Installing a High-Density Disk Enclosure

Prerequisites

The required installation tools and materials include:

• 4 U installation template (available in the accessory box)
• Marker

Context

The space occupied by devices and installation positions of floating nuts are specified in the installation templates, which can help you locate the installation positions.

You are advised to install disk enclosures from the bottom up in descending order of weight (heaviest enclosures at the bottom and the lightest at the top).

Procedure

1. Align the bottom of the installation template with the integer U mark on the mounting bar of the cabinet, as shown in Figure 8-42.
   Figure 8-42 Determining the installation positions of 4 U SAS disk enclosures
   

2. Follow the instructions on the installation template to insert the mounting ear of the installation template into the mounting bar to fasten the installation template.

   The installation template can be regarded as the front panel of the device. The installation template provides the positions of the screw holes that are used to secure a 4 U SAS disk enclosure.

3. Use a marker to mark the positions of the screw holes where a device will be fastened on the mounting bar. Then, the installation positions of the disk enclosures are located.

Prerequisites

Ensure that the following tools and materials are ready:

• M3 to M6 Phillips screwdriver
• Marker
• M6 screw
• M4 screw
• M3 screw
• installation templates
• Ball bearing guide rail components (including ball bearing guide rails, M3 screws, M4 screws, M6 screws, and installation templates)

Context

• The high-density enclosure must be installed on ball bearing guide rails. Stacking the enclosure will cause damage.

• Ball bearing guide rails must be installed horizontally.

To ensure that a guide rail can be installed horizontally, it is recommended that you mark both front and rear columns where the ball bearing guide rail is to be secured before installation.

• You are advised to install storage devices in the cabinet from bottom up.
• Configure a pair of ball bearing guide rails for each high-density disk enclosure.
• The ball bearing guide rails can be extended from 600 mm (23.62 in.) to 915 mm (36.02 in.).

Procedure

1. Pull out the inner rail of the ball bearing guide rails, as shown in Figure 8-43.
   1. Pull out the inner rail until the buckle is exposed.
   2. Press the buckle and pull out the inner rail from the ball bearing guide rail, as shown in step 2 in Figure 8-43.

   Put the removed inner rail into an ESD bag. The inner rail will be used in installing a high-density disk enclosure.

   Figure 8-43 Pulling out an inner rail
   

   For the right ball bearing guide rail, press the buckle downward. For the left ball bearing guide rail, press the buckle upward.

2. Pull out the rail bracket of a ball bearing guide rail, as shown in Figure 8-44.
   1. Loosen the four M3 screws on the ball bearing guide rails shown in (1) of Figure 8-44.
   2. Remove the rail bracket, as shown in (2) of Figure 8-44.

   The rail bracket will be used to fix the cable manager.

   Figure 8-44 Removing a rail bracket
   

3. Install the left inner rail (identified by L) of the ball bearing guide rails.
   1. Loosen the two M4 screws on the external rail of the ball bearing guide rail, adjust the length of ball bearing guide rail.
      Figure 8-45 Loosening screws
      

      Align the ball bearing guide rails with the mounting bar of the cabinet in advance. If the distance is not longer than 10 mm (0.39 inch) between the front and rear brackets of the ball bearing guide rails and the front and rear ends of the mounting bar, loosen the two M4 screws on the external rail of the ball bearing guide rail (pull out the middle guide rail to expose the two M4 screws on the ball bearing guide rail.), as shown in Figure 8-45. If the distance is longer than 10 mm (0.39 inch), remove the two M4 screws and align the distance.

   2. Align the bottom edge of the ball bearing guide rail with the U scales on the front mounting bar, and insert the front positioning pins of the ball bearing guide rail into the square holes. Use M6 screws to fix the front bracket of the ball bearing guide rail, as shown in Figure 8-46.
   3. Stretch the rear bracket of the ball bearing guide rail and insert the rear positioning pins into the square holes of the rear mounting bar. Use M6 screws to secure the guide rail in place, as shown in Figure 8-46.
      Figure 8-46 Installing a ball bearing guide rail
      

   4. Fasten the two M4 screws on the ball bearing guide rail, as shown in Figure 8-47.
   Figure 8-47 Fastening screws
   

4. Install the right inner rail (identified by R) of the ball bearing guide rails.

   The installation method of the right inner rail is similar to 3.

5. Install the ball bearing guide rail bracket, as shown in Figure 8-48.
   1. Install the rail bracket and slide the bracket to the ball bearing guide rail, as shown in step 1 in Figure 8-48.
   2. Fasten the four M3 screws on the ball bearing guide rail, as shown in step 2 in Figure 8-48.

   Fasten two screws at the top and bottom of the bracket of the ball bearing guide rail, respectively.

   Figure 8-48 Installing a ball bearing guide rail bracket
   

6. After the installation, use the installation templates to check the distance between the left and right guide rails, and ensure that the two templates can snatch into the ball bearing guide rails, as shown in Figure 8-49.

   If the installation templates cannot snatch into the guide rails, loosen the M6 screws no the guide rails and mounting bars, and slightly adjust the distance between the left and right guide rails. After the installation templates successfully snatch into the guide rails, fix the M6 screws.

   Figure 8-49 Inserting installation templates
   

7. Check the installation of the ball bearing guide rails.
   1. Check whether the ball of the ball bearing guide rail is placed at the most front end of the middle rail. If not, slide it to the most front end of the middle rail, as shown in Figure 8-50.
      Figure 8-50 Sliding the ball to the most front end of the middle rail
      

   2. Check whether the middle rail of the ball bearing guide rail is completely inserted, that is, the edges of the middle rail and external rail are at the same vertical plane, as shown in Figure 8-51.

   If the middle guide rail is not in place, high-density disk enclosures may fail to be pushed in or pulled out smoothly later. Release the inner rail latch to push the rail into the guide rail.

   Figure 8-51 Sliding the middle rail to align it with the edges of the external rail
   

Prerequisites

Ensure that the following conditions are met before installing high-density disk enclosure:

• The installation environment meets requirements.
• The ball bearing guide rails used for sliding high-density disk enclosure into cabinets have been installed.

Ensure that the following tools and materials are available and ready for use:

• Phillips screwdriver
• M6 screw
• M4 screw
• M3 screw
• Protective gloves
• High-density disk enclosure

Precautions

• To prevent personal injury and device damage, use at least three persons to carry and install the unloaded enclosure into the cabinet and install disks modules into the enclosure.

  If you remove disks to facilitate the movement and installation of the device, record the mapping between each disk and its slot in advance. That helps insert each disk back to its correct slot after the movement and installation.

• Install components into a cabinet from bottom to top to prevent the cabinet from falling over.

Procedure

1. Wear protective gloves.
2. Install the inner rail to the right of the high-density disk enclosure.
   1. Install the inner rail onto the system enclosure, as shown in step 1 in Figure 8-52.
      Figure 8-52 Installing the inner rail
      

   2. Use two M4 screws to secure the inner rail, as shown in step 2 in Figure 8-52.

3. Install the inner rail to the left of the high-density disk enclosure.

   Repeat 2 to install the left inner rail.

4. Remove the two M3 screws from the cover, as shown in Figure 8-53.
   Figure 8-53 Removing screws
   

5. Place the side step in the rear of the high-density disk enclosure on the front bracket of the ball bearing guide rails, and slide the disk enclosure into the cabinet along the ball bearing guide rails (no manual alignment is required because the inner rail automatically connects to the middle rail), as shown in Figure 8-54.
   • Do not pull out the middle guide rails when sliding the high-density disk enclosure into the cabinet. Otherwise, the guide rails may be misaligned.

   • Before you install disk modules, install the high-density disk enclosure into the cabinet.
   Figure 8-54 Sliding the high-density disk enclosure into a cabinet
   

6. Check the high-density disk enclosure installation.
   • After sliding the high-density disk enclosure into the cabinet, pull out the high-density disk enclosure from the cabinet and slide the high-density disk enclosure into the cabinet for two times respectively to check that the ball bearing guide rails are correctly installed.
   • If you cannot push or pull out a high-density disk enclosure smoothly, check whether inner rails are fully inserted into mid rails. If the inner rails are not fully inserted into mid rails, disassemble the high-density disk enclosure and check whether ball bearing guide rails meet the following conditions according to the section of Installing Ball Bearing Guide Rails (for High-Density Disk Enclosure):
     • Check whether ball bearing guide rails are installed horizontally (whether front and back brackets of ball guide rails are on the same level).
     • Check whether the installation templates of ball bearing guide rails can be inserted.
     • Check whether the ball of the ball bearing guide rail is placed at the most front end of the middle rail.
     • Check whether the mid rails of ball bearing guide rails are completed inserted.

7. Install a cover.
   1. Pull out the enclosure slowly, as shown in step 1 in Figure 8-55.
   2. Push the upper cover backward until the upper cover touches the mounting bars, as shown in step 2 in Figure 8-55.
   3. Fasten the two captive screws on the cover, as shown in step 3 in Figure 8-55.
   Figure 8-55 Installing a cover
   

8. Install the system enclosure.
   1. Slide the enclosure into the cabinet slowly, as shown in step 1 in Figure 8-56.
   2. Fasten the two captive screws on the panel, as shown in step 2 in Figure 8-56.
   Figure 8-56 Fastening the two screws on the panel
   

9. Connect the ground cable.
   1. Remove plastic insulation tubes from the OT terminals of a ground cable using diagonal pliers.
   2. Remove the ground screw from the disk enclosure with a Phillips screwdriver.
   3. Fasten one OT terminal of the ground cable to a ground screw hole on the device using a ground screw, as shown in Figure 8-57.
      Figure 8-57 Connecting a ground cable
      
   4. Connect the other OT terminal of the ground cable to the ground terminal on the cabinet in the same way.
   5. Repeat the preceding operations to connect the ground cables of all devices.

10. Install other high-density disk enclosures into the cabinet.

Prerequisites

Ensure that the following conditions are met before installing cable managers:

All high-density disk enclosures have been installed.

Ensure that the following tools and materials are ready:

• M3 screw
• Phillips screwdriver
• Protective gloves
• Cable manager

Procedure

1. Arrange cable managers so that both ends of each cable tray are on the same side, as shown in Figure 8-58.
   Figure 8-58 Arranging cable managers
   

2. Insert the two sides of the left cable manager to the same side of the ball bearing guide rail and the high-density disk enclosure.
   1. Insert the upper left of the cable manager into the high-density disk enclosure, as shown in step 1 in Figure 8-59.
   2. Insert the lower left of the cable manager into the bracket of the ball bearing guide rail, as shown in step 2 in Figure 8-59.
   Figure 8-59 Inserting the left cable manager
   

3. Use a Phillips screwdriver to fasten M3 screws to secure the left cable manager.
   1. Use a Phillips screwdriver and M3 screws to secure the lower left of the cable manager, as shown in step 1 in Figure 8-60.
   2. Adjust the lower left of the cable manager so that the bottom of the cable manager is against the limiting latch, as shown in step 2 in Figure 8-60.
   3. Use a Phillips screwdriver and M3 screws to secure the upper left of the cable manager, as shown in step 3 in Figure 8-60.
   Figure 8-60 Installing a left cable manager
   

4. Insert the two sides of the right cable manager to the same side of the ball bearing guide rail and the high-density disk enclosure.
   1. Insert the upper right of the cable manager into the high-density disk enclosure, as shown in step 1 in Figure 8-61.
   2. Insert the lower right of the cable manager into the bracket of the ball bearing guide rail, as shown in step 2 in Figure 8-61.
   Figure 8-61 Inserting the right cable manager
   

5. Use a Phillips screwdriver to fasten M3 screws to secure the right cable manager.
   1. Use a Phillips screwdriver and M3 screws to secure the lower right of the cable manager, as shown in step 1 in Figure 8-62.
   2. Use a Phillips screwdriver and M3 screws to secure the upper right of the cable manager, as shown in step 2 in Figure 8-62.
   Figure 8-62 Installing a right cable manager
   

6. Route and bind the cables on the cable manager.
   1. Bind all the mini SAS HD electrical cables on the right. Positions 1 in Figure 8-63 are where the cables are bound to enter the cable manager.
   2. Bind all the power cables on the right to the handle of the fan module. Positions 2 in Figure 8-63 are where the cables are bound to enter the cable manager.
   3. Bind all the cables on the right (including mini SAS HD electrical cables, power cables, and ground cables) to the front end of the cable manager. Positions 3 in Figure 8-63 are where the cables are bound to enter the cable manager.
   4. Route and bind cables along the trough of the cable manager. Positions 4 in Figure 8-63 are where the cables are bound to enter the cable manager.
   5. Route and bind cables along the trough of the cable manager. Positions 5 in Figure 8-63 are where the cables are bound to get out of the cable manager.

   Repeat the previous steps to route and bind cables onto the left cable manager.

   • Evenly divide the cables connected to the storage device into two parts. Place the left part of cables into the troughs of the left cable tray, and the right part in the troughs of the right cable tray.
   • To route a 5 m mini SAS HD electrical cable across three cabinets, use the underfloor and side cabling methods, and do not use the overhead cabling method.
   Figure 8-63 Routing cables on the cable managers
   

7. Install the spring pins to the left and right cable managers to secure the cable managers.
   1. Pull up the spring pin, as shown in step (1) of Figure 8-64.
   2. Adjust the cable managers to allow the stretchable guide rail of one cable manager to insert into the support of the other cable manager, as shown in step (2) of Figure 8-64.

   When the spring pin aligns with the hole in the support, the spring pin can automatically disconnect, and the installation of the spring pin is completed.

   Figure 8-64 Installing the spring pin
   

8. Check the cable manager installation.
   • Loosen the captive screws on the front panel of a high-density disk enclosure. Pull the high-density disk enclosure out of the cabinet or slide the high-density disk enclosure into the cabinet several times and check whether the cable managers extend correctly.
   • If yes, the cable managers are installed correctly. If no, slightly adjust screws that secure the cable managers.

Prerequisites

Ensure that the following condition is met before installing function modules:

Ensure that the following tools and materials are ready:

• ESD wrist strap
• ESD clothes
• ESD gloves
• Phillips screwdriver
• M6 screw
• disk module
• (Optional) Caution labels for the coffer disks (Required only when the caution labels have not been attached to the coffer disks.)

Procedure

1. Loosen the two screws on the panel and pull out the system enclosure, as shown in Figure 8-65.
   Figure 8-65 Pulling out a node
   

2. Insert disks from inward to outward (E to A) and from left to right (0 to 14), as shown in Figure 8-66. Deployment of disk slots on high-density disk enclosures, as shown in Figure 8-67.
   Figure 8-66 Disk slots number of high-density disk enclosures
   
   Figure 8-67 Installing a disk module
   

Follow-up Procedure

After the installation is complete, install filler panels to the vacant slots to ensure proper heat dissipation. For details about installation methods, see this section.