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BYRON GROSSNICKLE

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Posted By BYRON GROSSNICKLE Fri September 15, 2023 09:39 AM
Found In Egroup: Primary Storage
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I guess I don't understand the question. In DRAID5/6 there is no single drive that is a "hot spare" there is spare space on every drive of the DRAID array (as well as data, P and Q). When a drive fails, all drives participate in the rebuild and accept data from the failed drive in their "spare" areas. ...
Posted By BYRON GROSSNICKLE Mon April 18, 2022 10:40 AM
Found In Egroup: Primary Storage
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Yes, garbage collection is a very lazy protocol. And the reason for that is that if it waits longer, it is likely to have less work to do (more extents totally invalid) because it doesn't have to move as much stuff around. So if your pool is not very full, the garbage collection routines will work very ...
Posted By BYRON GROSSNICKLE Mon April 18, 2022 09:38 AM
Found In Egroup: Primary Storage
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So I think there may be some confusion between thin and compressed. Compressed ACTUALLY = thin + compressed. So if you were to only have a thin (and not compressed) your thin size would be 290GB. A compressed volume is also thin, so by compressing the data that takes 290GB, you shrink the usage to 160GB. ...
Posted By BYRON GROSSNICKLE Tue February 16, 2021 12:32 PM
Found In Egroup: Primary Storage
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Here is the response I got back from development: HI, Its using this page to work out the I/O capability of the storage pool: https://www.ibm.com/support/knowledgecenter/sl/ST3FR7_8.3.1/com.ibm.fs7200_831.doc/svc_balancedstorsubsys_23lkme.html These guidelines are ok if you are using HDD ...
Posted By BYRON GROSSNICKLE Tue February 16, 2021 11:26 AM
Found In Egroup: Primary Storage
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I am trying to get in touch with development and find an answer to the question. Thanks. ------------------------------ BYRON GROSSNICKLE ------------------------------
Posted By BYRON GROSSNICKLE Thu July 30, 2020 11:10 AM
Found In Egroup: Primary Storage
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Edward, The overall performance would be at least that of the FCM 1.0 modules with the data going to the FCM2.0 performing better. So, overall, performance may improve slightly. It will definitely be no worse. Thanks, Byron Grossnickle ------------------------------ BYRON GROSSNICKLE - ...
Posted By BYRON GROSSNICKLE Thu July 30, 2020 11:10 AM
Found In Egroup: Primary Storage
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Edward, There is no problem mixing them in arrays as the overall performance will be slightly better than just the FCM1.0 modules. Since the overall performance of the FCM2.0 modules is better, the overall performance of the array will go up slightly. Hope that helps. Thanks, Byron Grossnickle ...