The entire title goes 'DS8700/DS8800 EasyTier extent migration may cause repeated warmstarts and potential access loss when both RAID-5 and RAID-6 arrays are configured in the system'. And you can find all the details over here.
Let me take over some of the details
Abstract
DS8700/DS8800 customers running EasyTier extent migration may experience repeated warmstarts with Fixed Block (FB) extents AND both RAID-5 and RAID-6 arrays are configured. Both EasyTier Auto Mode and EasyTier Manual mode (volume migration/rebalance, Rank Depopulation) are exposed. Customers with volume 0x0000 defined will experience more severe warmstarts and impacts (a potential loss of access), than those without this volume defined.
Content
Customers not on DS8700/DS8800 are not exposed.
This is applicable only to FB extents and not to Key Count Data (CKD) extents, and customers not having RAID-5 and RAID-6 are not exposed.
Customers at, or above the code bundles recommended below are not exposed to this issue.
Mitigation
Upgrade to the code levels indicated in this notification OR follow the instructions below to disable EasyTier Auto Mode until the code levels are installed.
Check if ET is running disable ET Auto Mode and stop all ET manual mode operations.
You can also find the commands to do so in the flash and the corrected levels of code too.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment