Default file types in the flash memory of an S series switch

After an S series switch (except the S1700) is powered on, it initializes the configuration by reading the configuration file from the flash memory by default. When you run the dir flash: command in the user view, the following information is displayed:
dir flash:
Directory of flash:/

Idx Attr Size(Byte) Date Time FileName
0 -rw- 812 Jan 01 2008 00:00:56 private-data.txt
1 -rw- 948 Jan 01 2008 07:16:55
2 -rw- 90,602 Jan 03 2008 03:58:15 v200r008sph001.pat
3 -rw- 6,418,980 Jan 19 2008 20:19:42
4 -rw- 12,240 Jan 03 2008 04:52:43 $_patchstate_reboot
14,632 KB total (8,228 KB free)

In the command output:
- vrpcfg.cfg: indicates the configuration file.
- indicates the system software.
- private-data.txt: indicates the file used to save service initialization data. Initialization data of some tasks (for example, the number of times the switch restarts) is irrelevant to the configuration and is not recorded in the configuration file. The private-data.txt file records initialization data of these tasks.
- $_patchstate_reboot: records patch status. This file is created after the switch runs a patch. This file is protected by the system and cannot be deleted. The file records status of all patches, for example, the active state and running state.
- v200r008sph001.pat: indicates a patch file. The name extension of patch files is .pat.
Sometimes, the flash memory saves a notilogindex.txt file. If a destination host is configured for Inform traps, the number recorded in this file is used as the initial serial number and filled in the Request ID field in SNMP packets. The system starts a timer when the SNMP task starts, and updates the file every 12 hours.

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