Hard-disk no space

i found the size of this directory lib/pgsql/data/base/16384 is 35 GB
and i don’t know why that?..is this related to either Freepbx or CRM?
can i delete this directory?
and how can i get rid of this problem again?

this is the output:

[[email protected] 1]# cd /var/lib/pgsql/data/base/
[[email protected] base]# ls
1 10792 10793 16384
[[email protected] base]# cd 16384
[[email protected] 16384]#

2745873 3568634 3590166 3621752 3654445 3680328 3705222 3736948 3762248 3787145 3812036 3843354 3868247 3893158
3453056 3568636 3590167 3621755 3654454 3680333 3705224 3736957 3762256 3787146 3812038 3843357 3868250 3893162
3453058 3568639 3590188 3621756 3654458 3680341 3705229 3736958 3762258 3787149 3812042 3843358 3868254 3893169
3457733 3568640 3590190 3621757 3654464 3680342 3705230 3736959 3762261 3787151 3812049 3843360 3868262 3893174
3457738 3568641 3590193 3621758 3654469 3680344 3705233 3736962 3762265 3787152 3812052 3843368 3868264 3893176
3457741 3568642 3590194 3621763 3654472 3680346 3705240 3736966 3762271 3787160 3812054 3843372 3868265 3893177
3457742 3568644 3590195 3621773 3654473 3680351 3705244 3736969 3762274 3787164 3812056 3843375 3868268 3893180
3457743 3568647 3590196 3621774 3654476 3680357 3705251 3736970 3762275 3787173 3812060 3843376 3868273 3893184
3457771 3568648 3590198 3621775 3654482 3680360 3705254 3736971 3762278 3787174 3812067 3843377 3868283 3893188
3457776 3568649 3590201 3621776 3654489 3680361 3705255 3736980 3762282 3787176 3812070 3843386 3868284 3893196
3457779 3568650 3590202 3621780 3654490 3680364 3705258 3736984 3762283 3787178 3812071 3843390 3868285 3893197
3457780 3568652 3590203 3621783 3654491 3680368 3705260 3736987 3762296 3787182 3812074 3843393 3868286 3893199
3457781 3568655 3590204 3621784 3654494 3680372 3705266 3736988 3762297 3787183 3812078 3843394 3868290 3893202
3457790 3568656 3590206 3621785 3654499 3680381 3705270 3736989 3762302 3787196 3812085 3843396 3868298 3893206
3457795 3568657 3590209 3621794 3654507 3680382 3705275 3736998 3762303 3787197 3812088 3843404 3868300 3893214
3457798 3568658 3590210 3621798 3654508 3680383 3705276 3737000 3762306 3787202 3812091 3843408 3868301 3893216
3457799 3568660 3590211 3621803 3654510 3680386 3705279 3737003 3762309 3787203 3812092 3843411 3868304 3893219
3457800 3568663 3590212 3621804 3654512 3680390 3705284 3737004 3762310 3787204 3812096 3843412 3868308 3893220
3457809 3568664 3590214 3621805 3654521 3680399 3705288 3737005 3762314 3787205 3812103 3843413 3868316 3893224
3457814 3568665 3590217 3621812 3654522 3680402 3705289 3737016 3762315 3787210 3812106 3843422 3868318 3893230
3457817 3568696 3590218 3621816 3654523 3680403 3705294 3737018 3762330 3787214 3812109 3843426 3868319 3893234
3457818 3568698 3590219 3621819 3654526 3680404 3705298 3737021 3762331 3787221 3812110 3843429 3868322 3893235
3457819 3568701 3590220 3621820 3654530 3680408 3705301 3737023 3762334 3787224 3812116 3843430 3868326 3893238
3457828 3568702 3590222 3621821 3654537 3680416 3705306 3737025 3762335 3787226 3812120 3843431 3868330 3893246
3457832 3568703 3590225 3621830 3654540 3680418 3705312 3737034 3762336 3787229 3812122 3843440 3868338 3893248
3457836 3568714 3590226 3621834 3654542 3680419 3705313 3737039 3

and a lot of files.

pgsql is PostgreSQL, which is not used by asterisk or FreePBX. So you’ll need to look at the other applications installed on the box.