https://community.hpe.com/t5/disk-enclosures/msa20-sync-speed/m-p/3797579#M20533 We've got a MSA20 with 12x500GB SATA drives. 6404 and MSA20 controllers flashed with the latest and greatest firmware.<BR /><BR />The array is currently (48h and counting) syncing its raid sets... only way to tell this is to check the disk leds?<BR /><BR />How can we use (hpacucli or other Linux/HP commands) to see if a raid set is currently syncing/rebuilding or not? I.e. we want to know when we can expect an increase in performance... During rebuild we got ~180MB/s read and ~10MB/s write...<BR /><BR />Also, when a new array is created, the cacheratio is automatically set to 100/0. Is this a feature or a "feature"? Wed, 31 May 2006 08:53:12 GMT RKSE 2006-05-31T08:53:12Z https://community.hpe.com/t5/disk-enclosures/msa20-sync-speed/m-p/3797579#M20533 We've got a MSA20 with 12x500GB SATA drives. 6404 and MSA20 controllers flashed with the latest and greatest firmware.<BR /><BR />The array is currently (48h and counting) syncing its raid sets... only way to tell this is to check the disk leds?<BR /><BR />How can we use (hpacucli or other Linux/HP commands) to see if a raid set is currently syncing/rebuilding or not? I.e. we want to know when we can expect an increase in performance... During rebuild we got ~180MB/s read and ~10MB/s write...<BR /><BR />Also, when a new array is created, the cacheratio is automatically set to 100/0. Is this a feature or a "feature"? Wed, 31 May 2006 08:53:12 GMT https://community.hpe.com/t5/disk-enclosures/msa20-sync-speed/m-p/3797579#M20533 RKSE 2006-05-31T08:53:12Z https://community.hpe.com/t5/disk-enclosures/msa20-sync-speed/m-p/3797580#M20534 Figures from same machine (DL380 G4):<BR />SA6i/internal 4*36 GB scsi raid5, read = ~140 MB/s<BR />SA6i/MSA20 8*250 GB sata raid5, read = ~100 MB/s<BR />SA6i/MSA20 4*250 GB sata raid0, read = ~85 MB/s<BR />6404/MSA20 5*500 GB sata raid5, read = ~170 MB/s<BR />6404/MSA20 2*500 GB sata raid0, read = ~50 MB/s<BR /><BR />is the result above representative for this kind of solution?<BR /> Wed, 31 May 2006 09:06:18 GMT https://community.hpe.com/t5/disk-enclosures/msa20-sync-speed/m-p/3797580#M20534 RKSE 2006-05-31T09:06:18Z