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DS8880 supports VMware SCSI UNMAP
By
Mandar Vaidya
posted
Wed June 14, 2017 09:25 AM
0
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IBM DS8880 now supports VMware SCSI UNMAP primitive. With this, storage space is returned to IBM DS8880 for another use when space is released from vSphere layer. Using this VMware's VAAI SCSI UNMAP primitive, the VMware host notifies the storage device about freed space on a thin-provisioned LUN by sending a SCSI UNMAP command. DS8880 will release any entire extents that have been allocated within that freed space.
On DS8880, the extent size is either 16MB for small extents or 1 GB for large extents. Therefore, for any space to be released, the request must be for at least 16 MB. If the request is not aligned on extent boundaries, then only full extents contained within the requested range will be released.
For additional details, refer to the blog
Space reclamation for DS8880 thin provisioned volumes using VMware’s VAAI SCSI UNMAP
#SCSI_UNMAP
#Softwaredefinedstorage
#softwaredefinedstorage
#reclaimingstorage
#DS8880
#EnterpriseStorage
#ibmstorage
#Flashstorage
#VMware
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Storage
Topic groups
Data Protection Software
File and Object Storage
Hyperconverged Infrastructure (HCI)
Primary Storage
Mainframe Storage
Storage for Containers
Storage Management and Reporting
Storage Area Networks (SAN)
Tape Storage
User groups
Events
Upcoming Storage Events
IBM Expert TV
Virtual Community Events
All IBM Community Events
Participate
Gamification Program
Community Manager's Welcome
Getting Started
Post to Forum
Share a Resource
Blogging on the Community
Connect with Storage Users
All IBM Community Users
Resources
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