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DDN TECHNICAL SUPPORT | SPT-CRU-0003 (A0) | 27 MAY 2016
SFA7700™
CMOS Coin Cell and Backup Battery
Replacement
The SFA7700 family of products includes not only the SFA7700 but also the SFA7700X and the
embedded processor systems – GS7K (integrated with GRIDScaler) and ES7K (integrated with
EXAScaler).
Each controller contains two batteries, both contained within the body of the controller:
•
A battery backup pack.
•
A CMOS coin cell battery.
The backup battery serves to provide enough power for the controller to safely flush its cache to the
disks in the event of a power event, thus preserving data integrity. The backup battery pack has a
useable life of three years from the date of manufacture. When the three years have passed, the SFA
OS is designed to place all pools into a write through state to guard against any loss of data.
The CMOS battery serves the same function as that found in regular consumer and enterprise PCs –
to retain certain settings in the unit's BIOS including current time and date. Its expected life span is
approximately five years.
Because the effective life of the backup battery is less than that of the CMOS battery, most
replacements will be for the backup battery only.
W
: Batteries should never be replaced without first consulting DDN Support.
ARNING
Electrostatic Discharge Warnings (ESD)
Because replacement of the batteries requires direct contact with sensitive interior components, it is
essential that the replacement steps be done in an ESD protected environment.
© 2016 DDN STORAGE. P/N 15-000836-001
HOW TO GUIDE
SFA7700 CMOS and Backup Battery Replacement Instructions | 1
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Table of Contents
Summary of Contents for DDN Storage SFA7700 Series
- Page 1 Because replacement of the batteries requires direct contact with sensitive interior components, it is essential that the replacement steps be done in an ESD protected environment. © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 1...
- Page 2 Do not store in a refrigerator or freezer (backup battery packs and CMOS batteries). The Battery Kit The battery replacement kit includes the following items: • 1 battery backup pack 1 CMOS coin cell battery • © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 2...
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Page 3: Required Tools
The status of the battery’s charge can also be determined visually by removing the controller and turning it upside down to access the battery’s test button and LEDs (Figure 2). © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 3... - Page 4 2. Run SHOW ENCLOSURE ALL (Figure 3). Note that in this example, the state of Battery Health for controller 0 is REPLACEMENT REQUIRED. Note, also, that the enclosure index for this controller is 0. © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 4...
- Page 5 (Figure 4 – In this example the controller with the aging battery is the one logged into.): © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 5...
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Page 6: 7. Wait Until The Controller Is Completely Powered Off. All Led's On The Back Of The Controller
Figure 5 2. Loosen the lock bar thumbscrew and pulled the lock bar down (Figure 6) while simultaneously pulling the controller out from the enclosure. © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 6... - Page 7 The outer case of the controller is secured with a total of six screws – two on the front as well as two on either side (Figure 7). Figure 7 4. Remove the side and front screws with a number 1 Phillips head screwdriver (Figure 8). © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 7...
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Page 8: Figure
Figure 9 6. Swing the top backward and lay flat (Figure 10). © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 8... - Page 9 Because of the close similarities, the battery replacement procedure is the same across all models of the SFA7700 family. Figure 11 – SFA7700X / GS7K / ES7K © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 9...
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Page 10: Ddn Storage. P/N 15-000836-001 Sfa7700 Cmos And Backup Battery Replacement Instructions
The backup battery pack is attached to the inside of the top of the controller canister (Figure 13). Figure 13 © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 10... - Page 11 This warning message can be seen in the event logs and is noted in the output of SHOW VOLTAGE ALL (excerpt in Figure 15). © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 11...
- Page 12 CMOS battery can be part of the larger battery removal procedure. Although the battery itself is identical for all SFA7700 family controllers, there are two types of connectors (Figure 16). © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 12...
- Page 13 (Figure 17). This is the older type and is most often seen in earlier releases of the SFA7700. © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 13...
- Page 14 (arrows, Figure 19). Figure 18 3. Gently remove the cards from their slots. © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 14...
- Page 15 7. Remove the old battery, then place the new battery in the bracket and secure with the included zip-tie. Figure 20 8. Attach the new CMOS battery wire into the appropriate baseboard connector (Figure 19) © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 15...
- Page 16 3. Reattach the CMOS and backup battery assembly into the inside top of the controller canister. 4. Reconnect the battery cables. Reassembling the Controller 1. Put the foam spacer back in place on the internal system drives. © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 16...
- Page 17 SHOW UPS <enclosure ID> <UPS index> ALL For example: SHOW UPS 0 1 ALL The resultant output should look similar to the following (Figure 22): © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 17...
- Page 18 A date code appears on a label adhered to the top of the battery backup assembly assembly (Figure 24) within the serial number information. © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 18...
- Page 19 M = Month of Manufacture Month Code Month Code Month Code Month Code Table 2 – Battery pack month codes D = Day of Manufacture © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 19...
- Page 20 Later versions of the battery packs include a human-readable form of the date in addition to the encoded date (Figure 24) . Figure 24 – Human-readable date © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 20...
- Page 21 Portal Assistance webportal.support@ddn.com Telephone DDN Support Worldwide Directory http://www.ddn.com/support/contact-support Email Support Email support@ddn.com Bulletins Support Bulletins http://www.ddn.com/support/technical-support-bulletins End-of-Life Notices http://www.ddn.com/support/end-of-life-notices Bulletin Subscription Requests support-tsb@ddn.com © 2016 DDN STORAGE. P/N 15-000836-001 SFA7700 CMOS and Backup Battery Replacement Instructions | 21...