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Potential E-Series system performance degradation during SSD internal NAND recovery

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Applies to

All E-Series SANtricity OS releases

Drive Models: PX02*******, PX04****** and PX05******

Drive Firmware: MS00 and MS01

Issue

Users may experience performance degradation during internal die (NAND) recovery. An SSD drive is composed of many dies (NANDs) that are equal in size. The size of a die (NAND) may vary depending on the drive model.

Drive returned check condition with SENSE data of 1/18/0 and/or 1/18/ff indicate the drive is undergoing an internal recovery (reconstruction) of a die. The drive returned check conditions can be found in the E-Series system event log:

Date/Time: **/**/** **:**:** 
Sequence number: *****
Event type: 100A
Event category: Error
Priority: Informational
Event needs attention: false
Event send alert: false
Event visibility: true
Description: Drive returned CHECK CONDITION
Event specific codes: 1/18/0
Component type: Drive
Component location: Tray **, Slot **
Logged by: Controller in slot *

Date/Time: **/**/** **:**:** 
Sequence number: *****
Event type: 100A
Event category: Error
Priority: Informational
Event needs attention: false
Event send alert: false
Event visibility: true
Description: Drive returned CHECK CONDITION
Event specific codes: 1/18/ff
Component type: Drive
Component location: Tray **, Slot **
Logged by: Controller in slot *

 

 

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