交换机空间不足，哪个文件可以删除

<S7506E-1>dir /all

Directory of flash:/

   0     -rw-  27508506  May 18 2011 14:48:18   s7500e-cmw520-r6616p01.app

   1     -rwh    864024  May 18 2011 15:14:47   io_mon.txt

   2     drw-         -  May 18 2011 15:14:52   seclog

   3     -rwh     12128  Jul 02 2024 09:58:44   private-data.txt

   4     -rw-     31799  Jul 02 2024 09:59:14   startup.cfg

   5     -rw-       151  Jul 02 2024 09:59:00   system.xml

   6     -rwh         4  Apr 19 2024 23:33:32   snmpboots

   7     -rw-  31675439  Oct 27 2011 04:11:55   s7500er6626.app

   8     -rwh       716  Nov 22 2023 15:26:09   hostkey

   9     -rwh       572  Nov 22 2023 15:26:14   serverkey

   10    -rwh       548  Nov 22 2023 15:26:26   dsakey

   11    -rwh     16413  Jul 02 2024 09:58:50   qosindex

64389 KB total (5677 KB free)

<S7506E-1>dis boot

<S7506E-1>dis boot-loader

  The primary app to boot of chassis 1 board 0 at this time is: flash:/s7500e-cmw520-r6616p01.app

  The primary app to boot of chassis 2 board 0 at this time is: flash:/s7500e-cmw520-r6616p01.app

  The primary app to boot of chassis 2 board 0 at next time is: flash:/s7500e-cmw520-r6616p01.app

  The primary app to boot of chassis 1 board 0 at next time is: flash:/s7500e-cmw520-r6616p01.app

<S7506E-1>dis ver

<S7506E-1>dis version

H3C Comware Platform Software

Comware Software, Version 5.20, Release 6616P01

Copyright (c) 2004-2010 Hangzhou H3C Tech. Co., Ltd. All rights reserved.

H3C S7506E uptime is 10 weeks, 3 days, 10 hours, 48 minutes

MPU(M) Chassis 1 Slot 0:

Uptime is 10 weeks,3 days,10 hours,48 minutes

H3C S7506E MPU(M) with 1 BCM1125H Processor

BOARD TYPE:         LSQ1SRP2XB

DRAM:               512M bytes

FLASH:              64M bytes

NVRAM:              512K bytes

PCB 1 Version:      VER.B

PCB 2 Version:      VER.B

Bootrom Version:    303

CPLD 1 Version:     006

CPLD 2 Version:     006

Release Version:    H3C S7506E-6616P01

Patch Version  :    None

Chassis 1 Slot 1 Without Board

LPU Chassis 1 Slot 2:

Uptime is 10 weeks,3 days,10 hours,44 minutes

H3C S7506E LPU with 1 BCM1122 Processor

请教大佬，交换机的空间不足了，上面哪个文件可以删除呢