NOTE:
You cannot enable security on non-optimal virtual disks.
Instant Secure Erase
Instant Secure Erase (ISE) drives use the same encryption technology as SED drives but do not allow the encryption key to be secured.
The encryption technology allows the drive to be re-purposed and securely erased using the Cryptographic erase function.
NOTE:
ISE drives do not provide protection against theft.
4 KB sector disk drives
PERC H740P, H745P MX, and H840 cards support 4 KB sector disk drives, which enable you to efficiently use the storage space.
Before installing Windows on 4 KB sector drives, refer
Windows operating system installation errors
NOTE:
Mixing 512–byte native and 512–byte emulated drives in a virtual disk is allowed, but mixing 512–byte and 4 KB native
drives in a virtual disk is not allowed.
NOTE:
4K is only supported in UEFI mode and not legacy BIOS.
NOTE:
4K devices will not appear in the boot select option; see the select boot device section for more information.
Fault tolerance
The PERC 10 series supports the following:
•
Self-Monitoring and Reporting Technology (SMART)
•
Patrol Read
•
Physical disk failure detection
•
Physical disk rebuild using hot spares
•
Controller cache preservation
•
Battery and non-volatile cache backup of controller cache to protect data
•
Detection of batteries with low charge after boot up
The next sections describe some methods to achieve fault tolerance.
The SMART feature
The SMART feature monitors certain physical aspects of all motors, heads, and physical disk electronics to help detect predictable physical
disk failures. Data on SMART-compliant physical disks can be monitored to identify changes in values and determine whether the values are
within threshold limits. Many mechanical and electrical failures display some degradation in performance before failure.
A SMART failure is also referred to as predicted failure. There are numerous factors that are predicted physical disk failures, such as a
bearing failure, a broken read/write head, and changes in spin-up rate. In addition, there are factors related to read/write surface failure,
such as seek error rate and excessive bad sectors.
NOTE:
For detailed information on SCSI interface specifications, see t10.org and for detailed information on SATA interface
specifications, see t13.org.
Features
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