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LSI "SSD Guard" - what is it?
- Thread starter rmd3003
- Start date
nitrobass24
[H]ard|DCer of the Month - December 2009
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Cornerstone: Data Protection and Availability
SSD Guard™
User Benefit(s):
Solid State Drives are renowned for their reliability and performance. SSD Guard™, unique to MegaRAID, increases the reliability of SSDs by automatically copying data from a drive with potential to fail to a designated spare or newly inserted drive. A predictive failure event notification, or S.M.A.R.T command, automatically initiates this rebuild to preserve the data on an SSD whose health or performance falls below par. This new feature will greatly benefit users employing a RAID 0 configuration due to the added data protection.
When enabled in MSM, SSD Guard will protect any and all logical volumes built using SSD devices (figure 6). In figure 7 and figure 8, we see a MegaRAID adapter with a RAID 0 volume built from two solid state disk drives. Should one of these drives fail, data loss would occur. However, since SSD Guard is enabled, the MegaRAID adapter is actively monitoring the status of both SSDs. Should a failure appear to be eminent, the MegaRAID adapter will automatically begin rebuilding data onto a third SSD hot spare. If a hot spare is not present or not assigned to the RAID 0, MSM will recommend that the user insert a hot spare drive into an available slot. Once the drive is inserted, copyback will begin.
SSD Guard™
User Benefit(s):
Solid State Drives are renowned for their reliability and performance. SSD Guard™, unique to MegaRAID, increases the reliability of SSDs by automatically copying data from a drive with potential to fail to a designated spare or newly inserted drive. A predictive failure event notification, or S.M.A.R.T command, automatically initiates this rebuild to preserve the data on an SSD whose health or performance falls below par. This new feature will greatly benefit users employing a RAID 0 configuration due to the added data protection.
When enabled in MSM, SSD Guard will protect any and all logical volumes built using SSD devices (figure 6). In figure 7 and figure 8, we see a MegaRAID adapter with a RAID 0 volume built from two solid state disk drives. Should one of these drives fail, data loss would occur. However, since SSD Guard is enabled, the MegaRAID adapter is actively monitoring the status of both SSDs. Should a failure appear to be eminent, the MegaRAID adapter will automatically begin rebuilding data onto a third SSD hot spare. If a hot spare is not present or not assigned to the RAID 0, MSM will recommend that the user insert a hot spare drive into an available slot. Once the drive is inserted, copyback will begin.
InvisiBill
2[H]4U
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- Jan 2, 2003
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- 2,608
That seems like something that would be fairly standard on any RAID controller, and should work for any drive, HDD or SSD. If a drive is stating that it's about to fail, the controller copies it to the spare... Duh?
Also, I think they mean imminent ("ready to take place") rather than eminent ("prominent").
Also, I think they mean imminent ("ready to take place") rather than eminent ("prominent").