Dell Unity: SupportAssist metadata partition has less than xx % of its drive space left.

Using SupportAssist generates an alert:

Alert 14:38005a 

The SupportAssist metadata partition has less than xx% of its drive space left. Your SupportAssist function may be affected. Contact your service provider to solve it.

The log file from the CLI /EMC/backend/log_shared/EMCSystemLogFile.log shows:

B       06/20/24 19:25:03.432 EmcSupportSvcs     38005a [WARN] User: The SupportAssist metadata partition has less than xx% of its drive space left. Your SupportAssist function may be affected. Contact your service provider to solve it.

The size of the log files in the /EMC/backend/CEM/ese/hostmnt directory was the main reason for the alert. The issue occurs because the /EMC/backend/CEM/ese/hostmnt directory has used up 80% of its available space.

Use the following command from the CLI to check the directory size:

spb:~/user# df -Th
Filesystem        Type      Size  Used Avail Use% Mounted on
udev              devtmpfs  931M  8.0K  931M   1% /dev
/dev/mapper/eroot ext4       13G  6.5G  5.7G  54% /
tmpfs             tmpfs     4.0G  100M  3.9G   3% /dev/shm
tmpfs             tmpfs     1.6G  178M  1.4G  12% /run
tmpfs             tmpfs     4.0M     0  4.0M   0% /sys/fs/cgroup
/dev/ram0         ext2       57M  2.7M   54M   5% /tmp
/dev/sda1         ext3      111M  1.5M  104M   2% /mnt/c4lx-cfg_msata
/dev/sda7         ext4       13G  1.2G   11G  10% /cores
/dev/sda9         xfs       2.0G  331M  1.7G  17% /var/lib/docker
/pramfs           pramfs    122M   49M   74M  40% /pramfs
/dev/mirrora5     ext2       27G  3.3G   23G  13% /EMC/backend/service
/dev/c4nasdba2    ext3      3.5G  489M  2.8G  15% /EMC/backend/CEM
/dev/c4nasdba1    ext3      995M   43M  902M   5% /nbsnas
/dev/c4loga2      ext3      4.6G  156K  4.3G   1% /EMC/backend/perf_stats
/dev/c4loga1      ext3      3.3G  101M  3.1G   4% /EMC/backend/log_shared
/dev/metricsluna1 ext3       16G  4.2G   11G  28% /EMC/backend/metricsluna1
/dev/c4fastvpa1   ext3      5.9G   28M  5.6G   1% /EMC/fastvp
/dev/loop0        ext3      198M  150M   38M  80% /EMC/backend/CEM/ese/hostmnt  <<<<
overlay           overlay   2.0G  331M  1.7G  17% /var/lib/docker/overlay2/8bf82d54e95e9354b5e41e7362074b2f2ab7514e9fda25d95573c22873589cd6/merged
/dev/loop1        ext3      1.8G   31M  1.7G   2% /EMC/Platform/tmp/dcsparse/mnt

From the CLI, view /var/log/messages:
The top 10 files display in descending order of file size. Top 1/10 indicates the largest file.

2025-07-17T00:25:03.112079+00:00 self check_disk_top_files: Disk usage of /EMC/backend/CEM/ese/hostmnt is 80% which is higher than or equal to the threshold (80%), will list the biggest 10 files.
2025-07-17T00:25:03.197261+00:00 self check_disk_top_files: Top 1/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/config/run/ese/ese.db, size=143543KB  <<<<<
2025-07-17T00:25:03.282582+00:00 self check_disk_top_files: Top 2/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.9, size=1029KB
2025-07-17T00:25:03.367693+00:00 self check_disk_top_files: Top 3/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.8, size=1029KB
2025-07-17T00:25:03.452176+00:00 self check_disk_top_files: Top 4/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.7, size=1029KB
2025-07-17T00:25:03.536613+00:00 self check_disk_top_files: Top 5/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.6, size=1029KB
2025-07-17T00:25:03.621824+00:00 self check_disk_top_files: Top 6/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.5, size=1029KB
2025-07-17T00:25:03.707044+00:00 self check_disk_top_files: Top 7/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.4, size=1029KB
2025-07-17T00:25:03.791431+00:00 self check_disk_top_files: Top 8/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.3, size=1029KB
2025-07-17T00:25:03.876641+00:00 self check_disk_top_files: Top 9/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.1, size=1029KB
2025-07-17T00:25:03.961377+00:00 self check_disk_top_files: Top 10/10 big files in /EMC/backend/CEM/ese/hostmnt: /EMC/backend/CEM/ese/hostmnt/log/ESE.log.2, size=760KB

From the CLI, check /EMC/backend/CEM/ese/hostmnt/config/run/ese:

spa:~/user# ls -alh /EMC/backend/CEM/ese/hostmnt/config/run/ese
total 140M
drwxr-xr-x 2 eseusr esegrp 1.0K Jul 23 23:07 .
drwxr-xr-x 3 eseusr esegrp 1.0K Jul 18 04:36 ..
-rw-r--r-- 1 eseusr esegrp 140M Jul 23 23:07 ese.db
-rw-r--r-- 1 eseusr esegrp 2.9K Jul 18 04:36 ese_fe.zip

To clear the alert, follow the resolution in Dell Unity: SupportAssist is showing Unreachable in Unisphere (Customers and Partners must log in to view) and run the SupportAssist cleanup.
The /EMC/backend/CEM/ese/hostmnt rotates logs automatically to free up space. 

April 23, 2026 Update

• If the OE upgrade is done while this message displays, an issue has been reported in which SupportAssist becomes disabled.
• In some OE versions, the OE upgrade process includes a SupportAssist upgrade.
• If there is insufficient free space on the partition where SupportAssist metadata is stored, SupportAssist may become disabled.
• It is recommended to run SupportAssist cleanup and apply the necessary fix before upgrading the OE.