If you used the HPE ESXi image you can check RAID status via CLI. The exact name and path of the ssacli tool is dependent on the ESXi version; for example it may be called hpssacli and the directory may be different. The following commands will show problems like defective cache battery:
[root@dl380g702:/opt/smartstorageadmin/ssacli/bin] ./ssacli ctrl all show status
Smart Array P410i in Slot 0 (Embedded)
Controller Status: OK
Cache Status: OK
Battery/Capacitor Status: OK
[root@dl380g702:/opt/smartstorageadmin/ssacli/bin] ./ssacli ctrl all show config detail
Smart Array P410i in Slot 0 (Embedded)
Bus Interface: PCI
Slot: 0
Serial Number: 50014380175866C0
Cache Serial Number: PBCDF0CRH1I2U3
Controller Status: OK
Hardware Revision: C
Firmware Version: 6.64-0
Rebuild Priority: Medium
Expand Priority: Medium
Surface Scan Delay: 3 secs
Surface Scan Mode: Idle
Parallel Surface Scan Supported: No
Queue Depth: Automatic
Monitor and Performance Delay: 60 min
Elevator Sort: Enabled
Degraded Performance Optimization: Disabled
Inconsistency Repair Policy: Disabled
Wait for Cache Room: Disabled
Surface Analysis Inconsistency Notification: Disabled
Post Prompt Timeout: 15 secs
Cache Board Present: True
Cache Status: OK
Cache Ratio: 25% Read / 75% Write
Drive Write Cache: Disabled
Total Cache Size: 1024 MB
Total Cache Memory Available: 912 MB
No-Battery Write Cache: Disabled
Cache Backup Power Source: Capacitors
Battery/Capacitor Count: 1
Battery/Capacitor Status: OK
SATA NCQ Supported: True
Number of Ports: 2 Internal only
Driver Name: HPE HPSA
Driver Version: 6.0.0.124-1OEM
PCI Address (Domain:Bus:Device.Function): 0000:05:00.0
Port Max Phy Rate Limiting Supported: False
Host Serial Number: CZ214503R3
Sanitize Erase Supported: False
Primary Boot Volume: logicaldrive 1 (600508B1001C41E272242D6A37FC83B0)
Secondary Boot Volume: None
Port Name: 1I
Port ID: 0
Port Connection Number: 0
SAS Address: 50014380175866C0
Port Location: Internal
Port Name: 2I
Port ID: 1
Port Connection Number: 1
SAS Address: 50014380175866C4
Port Location: Internal
Internal Drive Cage at Port 1I, Box 1, OK
Power Supply Status: Not Redundant
Drive Bays: 4
Port: 1I
Box: 1
Location: Internal
Physical Drives
physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SAS HDD, 450 GB, OK)
physicaldrive 1I:1:2 (port 1I:box 1:bay 2, SAS HDD, 450 GB, OK)
physicaldrive 1I:1:3 (port 1I:box 1:bay 3, SAS HDD, 450 GB, OK)
physicaldrive 1I:1:4 (port 1I:box 1:bay 4, SAS HDD, 450 GB, OK)
Internal Drive Cage at Port 2I, Box 1, OK
Power Supply Status: Not Redundant
Drive Bays: 4
Port: 2I
Box: 1
Location: Internal
Physical Drives
None attached
Array: A
Interface Type: SAS
Unused Space: 0 MB (0.0%)
Used Space: 1.6 TB (100.0%)
Status: OK
Array Type: Data
Logical Drive: 1
Size: 1.2 TB
Fault Tolerance: 5
Heads: 255
Sectors Per Track: 32
Cylinders: 65535
Strip Size: 256 KB
Full Stripe Size: 768 KB
Status: OK
Caching: Enabled
Parity Initialization Status: Initialization Completed
Unique Identifier: 600508B1001C41E272242D6A37FC83B0
Boot Volume: primary
Logical Drive Label: ADC1EA4550014380175866C0CBA7
Drive Type: Data
LD Acceleration Method: Controller Cache
physicaldrive 1I:1:1
Port: 1I
Box: 1
Bay: 1
Status: OK
Drive Type: Data Drive
Interface Type: SAS
Size: 450 GB
Drive exposed to OS: False
Logical/Physical Block Size: 512/512
Rotational Speed: 10000
Firmware Revision: HPD0
Serial Number: 53R0A038FTM71322
WWID: 50000394C831AC96
Model: HP EG0450FCSPK
Current Temperature (C): 33
Maximum Temperature (C): 48
PHY Count: 2
PHY Transfer Rate: 6.0Gbps, Unknown
Sanitize Erase Supported: False
Shingled Magnetic Recording Support: None
physicaldrive 1I:1:2
Port: 1I
Box: 1
Bay: 2
Status: OK
Drive Type: Data Drive
Interface Type: SAS
Size: 450 GB
Drive exposed to OS: False
Logical/Physical Block Size: 512/512
Rotational Speed: 10000
Firmware Revision: HPD0
Serial Number: 6330A02JFTM71323
WWID: 50000394D8020F7A
Model: HP EG0450FCSPK
Current Temperature (C): 34
Maximum Temperature (C): 48
PHY Count: 2
PHY Transfer Rate: 6.0Gbps, Unknown
Sanitize Erase Supported: False
Shingled Magnetic Recording Support: None
physicaldrive 1I:1:3
Port: 1I
Box: 1
Bay: 3
Status: OK
Drive Type: Data Drive
Interface Type: SAS
Size: 450 GB
Drive exposed to OS: False
Logical/Physical Block Size: 512/512
Rotational Speed: 10000
Firmware Revision: HPD0
Serial Number: 53V0A0CIFTM71322
WWID: 50000394C83A42FE
Model: HP EG0450FCSPK
Current Temperature (C): 33
Maximum Temperature (C): 52
PHY Count: 2
PHY Transfer Rate: 6.0Gbps, Unknown
Sanitize Erase Supported: False
Shingled Magnetic Recording Support: None
physicaldrive 1I:1:4
Port: 1I
Box: 1
Bay: 4
Status: OK
Drive Type: Data Drive
Interface Type: SAS
Size: 450 GB
Drive exposed to OS: False
Logical/Physical Block Size: 512/512
Rotational Speed: 10000
Firmware Revision: HPD0
Serial Number: 53R0A014FTM71322
WWID: 50000394C8313D2E
Model: HP EG0450FCSPK
Current Temperature (C): 36
Maximum Temperature (C): 52
PHY Count: 2
PHY Transfer Rate: 6.0Gbps, Unknown
Sanitize Erase Supported: False
Shingled Magnetic Recording Support: None
SEP (Vendor ID PMCSIERA, Model SRC 8x6G) 250
Device Number: 250
Firmware Version: RevC
WWID: 50014380175866CF
Vendor ID: PMCSIERA
Model: SRC 8x6G
[root@dl380g702:/opt/smartstorageadmin/ssacli/bin]