Check if some important database hosts have disk errors, and have a record of them so we can check they if they grow over time.
We could use some of the disks purchased here: T188978 to replace them, if necessary.
megacli -LDPDInfo -aAll | egrep -i "slot|error|failure count|s.m.a.r.t"
HP controllers do not show that detailed information about disks errors, this is an example of what it shows:
root@db1075:~# hpssacli ctrl slot=1 pd all show detail Smart Array P840 in Slot 1 array A physicaldrive 1I:1:1 Port: 1I Box: 1 Bay: 1 Status: OK Drive Type: Data Drive Interface Type: Solid State SATA Size: 800 GB Native Block Size: 4096 Firmware Revision: 4IWTHPG1 Serial Number: BTHC549206MQ800NGN Model: ATA LK0800GEYMU SATA NCQ Capable: True SATA NCQ Enabled: True Current Temperature (C): 26 Maximum Temperature (C): 30 Usage remaining: 99.37% Power On Hours: 17940 Estimated Life Remaining based on workload to date: 117903 days SSD Smart Trip Wearout: False PHY Count: 1 PHY Transfer Rate: 6.0Gbps Drive Authentication Status: OK Carrier Application Version: 11 Carrier Bootloader Version: 6