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тАО08-04-2000 05:15 AM
тАО08-04-2000 05:15 AM
I want to purchase a Jamaica/HASS, how do I configure it for the best performance ?
Solved! Go to Solution.
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тАО08-04-2000 05:24 AM
тАО08-04-2000 05:24 AM
SolutionHeres a list of the performance of Jamaica/HASS disks;
Disk_ProductID Size Speed(1)
========================
ST15150W 4Gb ~6.5 MB/s
ST34371W 4Gb ~8.5 MB/s
ST34572WC 4Gb ~10 MB/s
ST34573WC 4GB ~14 MB/s
ST19171 9GB ~10 MB/s
ST39173WC 9GB ~14.5 MB/s
ST39175LC 9GB ~18 MB/s
(1) using time dd if=/dev/rdsk/xxx
So for ultimate peformance make sure your Jamaica comes with the fastest disks available in the size you want. Install them using 2 SCSI controllers on your server (4 disks per controller) then create youre logical volumes striped over disks on both controllers and as many disks as possible and you will get fantastic performance.
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тАО08-04-2000 05:32 AM
тАО08-04-2000 05:32 AM
Re: Jamaica/HASS performance
Hey, thanks for the fast response, exactly what I was after!
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тАО08-04-2000 05:34 AM
тАО08-04-2000 05:34 AM
Re: Jamaica/HASS performance
Consider configuring it as two separate SCSI busses with 4 disks on each. The FWD SCSI bus is rated at 20Mb per second so you can overload it with more than 4 disks at 5Mb per second each. This does require two SCSI controller cards per Jamaica though.
Regards,
John
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тАО08-04-2000 05:40 AM
тАО08-04-2000 05:40 AM