Mike's PBX Cookbook

SSC Database Backup

Small System (Option 11) software is stored in various areas of the NTDK20 Small System Controller (SSC) card.

The following table summarizes the four backup methods and overlays and the commands to initiate them.

Method Overlay Command Description
Datadump LD 43 EDD Data in DRAM is written to the primary and backup flash drives (C: and Z:).
Note: This type of backup should be performed on a regular basis and after all changes.
Backup LD 43 BKO Data in the primary flash drive is copied to the PC Card device (drive B:).
Archive LD 143 UPGRADE
(Utilities Menu)
Data is copied to the PC Card device in a format organised by the user (drive A:).
Note: this is the recommended method of backing up customer data in parallel with datadumps.
CCBR LD 143 XBK Data is copied to the remote PC or computer disk. (XMODEM)

Archive Database and Remote Backup/Restore are covered elsewhere in this section.

Never Underestimate the Importance of Backups!

EDD Command (LD 43)

The EDD command copies customer data from DRAM to the primary and backup flash drives (C: and Z:).
This procedure is automatically performed when the Midnight routines run. It should also be be performed on a regular basis and after all changes.

Procedure:

  1. Login, type LD 43, press <cr>
  2. Type EDD, press <cr>
  3. After DATA DUMP COMPLETE, exit the overlay. Type four stars (****) to exit LD 43

It can take upto 5 mins to complete the datadump, depending on the size of the database.

BKO Command (LD 43)

The BKO command copies customer data from the primary flash drive to a PC Card. The backed up database can subsequently be used to restore customer data from an external drive (by using Restore Utilities in LD 143). This procedure is a monthly routine.

A PC Card (PCMCIA) Flashdisk (or compact flash card with PCMCIA adapter) is required for this procedure. Note: Cards with capacities greater than 64 Meg are NOT supported. A 32 Meg Compact Flash with PCMCIA adapter is suitable for back-ups.

Procedure:

  1. Insert a PC Card Flaskdisk in the SCC card PCMCIA slot B (right side).
  2. Login, type LD 43, press <cr>
  3. Type EDD, press <cr>
    This is to ensure the latest configuration is saved to the primary flash drive before you backup.
  4. Type BKO
    This will copy the contents of the primary flash drive (C:) to the PC Card (B:)
  5. After DATA DUMP COMPLETE, exit the overlay. Type four stars (****) to exit LD 43 and remove the PC Card.

It can take upto 5 mins to complete the datadump, depending on the size of the database. The PC Card should be stored safely!

XBK Command (LD 143)

The XBK command (Remote Backup) copies the customer data from the primary flash drive of the Option 11C system onto a computer using the XMODEM-CRC protocol. The backup can subsequently be used to restore customer data with XRT (Remote Restore), also in LD 143.

Procedure:

  1. Login, type LD 143, press <cr>
  2. Type XBK, press <cr>
  3. Choose 'Receive File' from HyperTerminal's 'Transfer' drop down menu.
  4. Enter a meaningful filename, and make sure that XMODEM is selected as the protocol.
  5. Click 'Receive'. After a short pause, a progress bar will start and the file will download.

It can take upto 5 mins to complete the transfer, depending on the size of the database.

Home » Meridian » Maint » Backup