SRDB ID | Synopsis | Date | ||
24598 | StorEdge T3 Disk Array Battery FAQs | 19 Apr 2002 |
Status | Issued |
Description |
Q. How can I check the status of the batteries? How do I know the status of a refresh operation or when the next refresh will occur?
A. Run a 'refresh -s'.
T3:/etc:40>refresh -s PCU1 PCU2 ----------------------------------------------------------------- U1 Recharging Pending U2 Recharging Pending Current Time Fri Sep 15 17:09:01 2000 Start Time Fri Sep 15 16:52:40 2000 Next Refresh Fri Sep 29 16:52:40 2000 Total time elapsed : 0 hours, 16 minutes, 21 seconds.
refresh -c ----> start refresh refresh -s ----> get status refresh -i ----> re-init command file refresh -k ----> kill current refreshing task
Q. What determines how often the battery refreshes?
A. It is based on the BAT_CYC setting in the T3's /etc/schd.conf file. It should be set to 28 (days).
You can also schedule the time for a refresh cycle to start using the following syntax:
BAT_BEG MM-DD-YYYY,hh-mm-ss
See Infodoc 24714 for more details.
Q. What is the battery hold time? What does it mean if my hold time is low?
A. Battery hold time is the length of time it takes to discharge a battery during a refresh cycle. The longer the time, the better the battery. The minimum PCU battery hold time is 6 minutes. (The T3 refers to hold time in seconds, e.g. 6 minutes equates to 360 seconds.) If the battery discharges in less than 6 minutes, the system assumes it has very little "juice" left and marks it as unhealthy by saying it's hold time is low.
Typical times for a healthy battery are 6-20 minutes. If hold time falls below 6, the battery must be replaced by replacing the PCU.
Refer to page B-10 of the T3 Administrator's Guide for further details.
Q. How can I tell how old the battery is?
A. Run an 'id read' on the unit and pcu in question. Here is an example:
T3:/etc:37>id read u1pcu1 Revision : 0000 Manufacture Week : 00032000 Battery Install Week : 00032000 Battery Life Used : 31 days, 8 hours Battery Life Span : 730 days, 12 hours Serial Number : 010293 Battery Warranty Date: 20000815151902 Battery Internal Flag: 0x00000000 Vendor ID : TECTROL-CAN Model ID : 300-1454-01(50)
Q. How long does the T3 battery last?
A. From the 'id read' output in the last question, the Battery Life Span is 730 days...or 2 years. After that it must be replaced, by replacing the PCU.
This information and more battery-related material can be found in the Sun StorEdge T3 Disk Tray Installation, Operation, and Service Manual