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Forum Discussion
StephenB
Jul 04, 2011Guru - Experienced User
PRO 6 poor read performance??
Just got a PRO 6, and started by installing a single Seagate ST31500341AS hard drive as XRAID2. (only spare disk I have at the moment, the real disks are on order). Performance settings are defaulte...
StephenB
Jul 08, 2011Guru - Experienced User
Thanks for your comments.
I see the "60 MB/s disk I/O of most desktop-class PCs" reference (though that number is clearly dated) - is that the number you had in mind? Connecting this particular drive (Seagate ST31500341AS) via e-sata directly to the PC, formating it as NTFS, and running Netgear's iometer script resulted in about 122 MB\s performance for both reads and writes. This is consistent with reviews on the drive (tomshardware.com for instance).
Anyway, if there is something else on how performance varies with the number of hard drives, maybe you can give me a quote to search on or something; as I'm not seeing it.
The PCs I've used for testing have 2-4 GB of RAM, the NAS has the 1 GB it was shipped with.
I've read that article, and didn't see any information related to the number of hard drives installed in the NAS.
mdgm wrote: As indicated in the article ReadyNAS Performance Expectations that's pretty much what you'd expect from a single hard drive.
StephenB wrote: forgot to post the logged Bonnie output - DD Result:59.2MB/s.
I see the "60 MB/s disk I/O of most desktop-class PCs" reference (though that number is clearly dated) - is that the number you had in mind? Connecting this particular drive (Seagate ST31500341AS) via e-sata directly to the PC, formating it as NTFS, and running Netgear's iometer script resulted in about 122 MB\s performance for both reads and writes. This is consistent with reviews on the drive (tomshardware.com for instance).
Anyway, if there is something else on how performance varies with the number of hard drives, maybe you can give me a quote to search on or something; as I'm not seeing it.
So far I am running Netgear's iometer.icf with no modifications. This uses a 1 GB file. I tried a drop-and-drag test with an 8 GB file, and got essentially the same results. I think Bonnie defaults to a 3 GB file, I simply ran the add-on as installed.
mdgm wrote: What size file are you testing with? You should test with a file that is at least twice as large as the amount of RAM in your PC.
The PCs I've used for testing have 2-4 GB of RAM, the NAS has the 1 GB it was shipped with.
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