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тАО06-02-2004 02:51 AM
тАО06-02-2004 02:51 AM
MSA1000 / Disk Activity
Just bought ourselves a nice MSA1000 with HA option. We've assembled all the bits into what we think are the right places, etc.
Got it in a test environment with a W2K server
with 2 HBAs and SecurePath s/w installed.
Configured a RAID-AVG physical volume and
2 logical arrays with selective presentation.
We've noticed that the disk activity leds
seem to be flashing quite a bit of the time.
The W2K server has one of the arrays mounted
as an NTFS voulme but there are no files on it.
Question : Is this expected behaviour ?
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тАО06-02-2004 04:43 AM
тАО06-02-2004 04:43 AM
Re: MSA1000 / Disk Activity
that behaviour is absolutely normal, because the MSA1000 does delayed logical disk initialization and disk scrubbing (testing disks).
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тАО06-02-2004 05:01 AM
тАО06-02-2004 05:01 AM
Re: MSA1000 / Disk Activity
Thanks for the reply.
We set this thing up c.a. 1 week ago
(and then got dragged off to sort other things).
The weird thing is, it's still exhibiting this behaviour, disk leds flickering away.
So it can't be array initialisation, etc.
It must be some sort of disk access/testing by the controllers, SecurePath s/w or W2K server.
Is that so ?
Many Thanks,
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тАО06-02-2004 04:55 PM
тАО06-02-2004 04:55 PM
Re: MSA1000 / Disk Activity
Yes, that is correct. The array is testing the disks. If you pull a report with the Array Diagnostic Utility (ADU) and you look deep into the report you can even find a counter how often this has run already.
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тАО08-18-2004 04:21 PM
тАО08-18-2004 04:21 PM
Re: MSA1000 / Disk Activity
But the old one MSA1K setup under Win2k cluster env. (via SCSI port) that do not have such behavior.
The new one we just brought that equiped fiber module & update to latest frimware that HDs activity quite busy.
So it make me quite confuse why the old one MSA1K do not do such job (disk cheing/testing) ?
Cody.
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тАО08-18-2004 05:53 PM
тАО08-18-2004 05:53 PM
Re: MSA1000 / Disk Activity
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тАО08-18-2004 10:38 PM
тАО08-18-2004 10:38 PM
Re: MSA1000 / Disk Activity
Regarding "disk scrubbing(testing disks)" on
MSA1000, does it can be adjustable or not ?
I seems do not find how to ?
Meantime, such process will reduce the HD lifetime ? because it testing so quite often ??
Regards.
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тАО08-19-2004 05:07 AM
тАО08-19-2004 05:07 AM
Re: MSA1000 / Disk Activity
I haven't seen any knob for it, but I don't work with the MSA very often and I usually use the CLI so I could have missed it.
High performance disk drives are designed for a high duty cycle. From looking at the lights it looks like the disk drives don't do much seeks - they rather do a spiral read.
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тАО08-19-2004 12:55 PM
тАО08-19-2004 12:55 PM
Re: MSA1000 / Disk Activity
Thanks your advises.
Regards.
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тАО10-11-2004 01:02 AM
тАО10-11-2004 01:02 AM
Re: MSA1000 / Disk Activity
The host ist installed with linux 2.6. The drivers are the ones that shipped with suse Linux 2.6 and not the original drivers because they dont support kernel 2.6