HSDA HDD Replacement

Prerequisites

Table 3. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
HSDA HDD with Tray	1 or more	-	5308760 (ES 3 Gb/s - SATA Hard Drive with Mounting Sled - Seagate – PN#ST3250310NS - Baracuda - 250GB) Preferred FRU or 5308760-3 (ES 6 Gb/s - SATA Hard Drive with Mounting Sled - Seagate – PN#ST500NM0011 – Constellation – 500GB) — Note: Use Only When 5308760 is not Available	-

Table 4. Safety

TO PREVENT DAMAGE TO COMPONENTS WITHIN THE HSDA, OBSERVE THE FOLLOWING ESD PRECAUTIONS:
WORK ON A STATIC-FREE MAT.
WEAR A STATIC STRAP TO ENSURE THAT ANY ACCUMULATED ELECTROSTATIC CHARGE IS DISCHARGED FROM YOUR BODY TO GROUND.
CREATE A COMMON GROUND FOR THE EQUIPMENT YOU ARE WORKING ON BY CONNECTING THE STATIC-FREE MAT, STATIC STRAP AND PERIPHERAL UNITS TO THAT PIECE OF EQUIPMENT.
FOR FURTHER INFORMATION REGARDING ESD PROTECTION, REFER TO THE SAFETY CHAPTER IN THIS PUBLICATION

FOLLOW ALL REQUIRED SAFETY AND PPE PROCEDURES CUSTOMARY FOR YOUR ORGANIZATION WHEN WORKING ON THIS PRODUCT.

Table 5. Required conditions
Condition	Reference	Effectivity
Access to front of the Operator Console is required. Remove obstacles in room.	-	-
Only trained service personnel should service the GE CT Scanner.	-	-
In order to support the combination of Hard Drive FRUs (5308760 / 5308760-3) in the same HSDA, the HSDA RAID Controller must be running with firmware revision “371E”.	-	-

Overview

This procedure describes and illustrates the steps necessary to replace Hard Disk Drive (HDD) with Tray in the High Speed Disk Array (HSDA).

Open a terminal window on the system.
In Terminal Window, start a secure shell session on the DIG or DIG2 computer.

Type: {ctuser@hostname}ssh darc , then press Enter.
Enter “lsscsi” command in shell session.

Type: {ctuser@darc}lsscsi , then press Enter.
The HSDA’s RAID Controller Firmware Revision will be display. See following Illustration.

Figure 1. HSDA's RAID Controller Firmware Revision Example

note:
If the firmware revision displayed is version “363B”, Hard Drive FRU 5308760-3 can not be used. The Firmware must be upgraded to version “371E” before using Hard Drive FRU 5308760-3. This firmware version 371E) supports the new FRU in any combination of old verses new FRUs. Hard Drive FRU 5308760, may still be used on the older firmware. If Hard Drive FRU 5308760-3 is the only available FRUs, the firmware must be upgraded first. See HSDA RAID Controller Firmware Upgrade procedure for upgrade.

note:
“/dev/sdb” is only present on CT 750HD systems, which has two HSDA’s. “/dev/sdb” will not be present on VCT GOC6 & 6.5 consoles.

Select one of the following methods to power off the Operator Console:
- If applications are running, click the Shut Down icon and select Shut Down.
- If applications are down, open a Unix Shell using the Toolchest. Type: {ctuser@hostname}halt, then press Enter.
The Operator Console monitor will display a ‘System Halted’ message when it is acceptable to power off the Operator Console.
Power OFF the Operator Console at the front panel switch. (See Figure 2.)

Figure 2. Console Power Switch
Perform prescribed Lockout/Tagout procedure. For added protection, disconnect the Twist-N-Lock Main Power Cable from rear of console.

Slide the replacement HDD Tray into the HSDA Assembly open bay.
Make sure the HDD Tray is securely inserted and HDD Tray Door is closed and locked.

Reconnect the Twist-N-Lock Main Power Cable from rear of console and remove Lockout Tagout protection applied earlier.
Power ON the Operator Console at the console front panel switch.
Visually verify the HSDA Assembly LCD Panel Power LED is illuminated.

Figure 6. HSDA LCD Panel
Do not allow Applications to start. During boot-up, cancel Application Startup when the CT Software Auto-start pop-up window appears.

Verify that the replacement HSDA HDD has powered up and is not displaying any Errors. The HDD Status LED on right side of HDD Tray should be illuminated Green.

note:
The HDD Status LED will first illuminate Yellow while the HSDA initializes the drive. After approximately 2 (two) minutes, the Status LED should turn Green.

note:
See HSDA Troubleshooting if any errors appear.
In order to assure proper operation of the HSDA Assembly with its new HDD, perform the System Configuration procedure located in the applicable Align, Setup, Cals > Console folder of this service methods publication.
Do not allow Applications to start.
1. During boot-up, cancel Application Startup when the CT Software Auto-start pop-up window appears.
2. Open a Terminal window and log on as Root.
3. Type: reconfigEnter
4. On the System Tab, select Yes on the Rebuild Scan Disk Array and click Accept.
  
  CAUTION: Under no circumstances shall the system be used to acquire data during this process. Failure to follow this warning may result is corrupt or lost patient data.
  
  note:
  No other changes are required in the Preferences, Hardware, and Network settings. During the reconfiguration process the replacement HDD will be added to the array.

After completing the System Configuration procedure, perform a complete shutdown of the Operator Console and restart the system.
Refer to System Scanning Test to confirm proper operation.
Reinstall Console Front Cover.