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PERC 5/i RAID Card: Tips and Benchmarks - Page 289

post #2881 of 7150
Quote:
Originally Posted by mak1skav View Post
Hello there,

I have bought this controller and i have made some tests with some SATA drives until now.

Two days ago i ordered 3 Seagate Savvio 15K ST936751SS from ebay.

Now i have to buy some cables for these SAS drives too. I have found some cables in ebay but all of them are using molex adapters for the power.

My problem is that i need to find some SAS cables that can take power from sata cable and not molex.

Can you help me to find such a cable ?

I have found this in ebay http://cgi.ebay.co.uk/NJ056-Cable-As...3%3A1|294%3A50

Does anyone know if i can use this cable to connect my 3 Savvio disks on the Perc 5/i controller?
That cable does look like the one you need. Can't really confirm it though, but I am not aware of any other pinouts that would use connectors like that (especially for a Dell server), so you should be good to go.

Never actually seen another cable like that so it would seem to be your only option. All the SAS cables I have use standard 'molex-type' peripheral connectors.
post #2882 of 7150
Quote:
Originally Posted by iakovl View Post
people... i have right now a 4*1T raid 5 on my perc 5/i.
how do i do an expansion to the raid and add another 1T hdd?
To increase the capacity of a virtual disk, follow these steps:

Click the Logical View tab in the left panel.
Right-click on a virtual disk icon and select Advanced Operations >> Reconstruction Wizard.
The Reconstruction Wizard window appears.
Click Add Drive.
In the top panel of the next screen, select the disk drives that you want to add to the virtual disk and click the down-arrow button to add them. If you change your mind, click the up-arrow button to move a selected drive back to the top panel.
When you are finished adding disk drives, click Next to continue.
If desired, select a new RAID level from the drop-down menu in the lower right of the next screen. Review the displayed information for the newly expanded virtual disk.
Click Finish to accept the new configuration.
A Reconstruct operation begins on the virtual disk. You can monitor the progress of the reconstruction in the Group Show Progress window. To do this, select Group Operations >> Show Progress.
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post #2883 of 7150
Thread Starter 
Quote:
Originally Posted by rockdude14 View Post
To increase the capacity of a virtual disk, follow these steps:

Click the Logical View tab in the left panel.
Right-click on a virtual disk icon and select Advanced Operations >> Reconstruction Wizard.
The Reconstruction Wizard window appears.
Click Add Drive.
In the top panel of the next screen, select the disk drives that you want to add to the virtual disk and click the down-arrow button to add them. If you change your mind, click the up-arrow button to move a selected drive back to the top panel.
When you are finished adding disk drives, click Next to continue.
If desired, select a new RAID level from the drop-down menu in the lower right of the next screen. Review the displayed information for the newly expanded virtual disk.
Click Finish to accept the new configuration.
A Reconstruct operation begins on the virtual disk. You can monitor the progress of the reconstruction in the Group Show Progress window. To do this, select Group Operations >> Show Progress.

If possible... back up anything important first. You never know.
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post #2884 of 7150
Quote:
Originally Posted by DuckieHo View Post
If possible... back up anything important first. You never know.
well you should always have a backup of important data
just expanded mine yesterday

anyone have an idea why the performance from 4 drives to 6 drives is almost identical

the first pic is 4 and the second is 6

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post #2885 of 7150
Thread Starter 
Quote:
Originally Posted by rockdude14 View Post
well you should always have a backup of important data
just expanded mine yesterday

anyone have an idea why the performance from 4 drives to 6 drives is almost identical

the first pic is 4 and the second is 6
HD Tach is only benching the first 2TB?


If you're running RAID0 or RAID5 with 4xF1s, you should be getting closer to 350MB/s or 280MB/s respectively.
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post #2886 of 7150
Quote:
Originally Posted by DuckieHo View Post
HD Tach is only benching the first 2TB?


If you're running RAID0 or RAID5 with 4xF1s, you should be getting closer to 350MB/s or 280MB/s respectively.
the first 2TB is still spread across all 6 drives
i would think it would bench faster

its raid 5 with
4 or 6 Samsung Spinpoint F1 HD753LJ

128kb stripe
adaptive read ahead
write back
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post #2887 of 7150
I'm about to RAID(0) 3 OCZ Vertex SSD's, should I use my onboard ICH10R, or would I get better performance with my PERC 6/i?

Also, if I go the PERC route, how do I update the FW when using a controller?
    
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post #2888 of 7150
Thread Starter 
Quote:
Originally Posted by rockdude14 View Post
the first 2TB is still spread across all 6 drives
i would think it would bench faster

its raid 5 with
4 or 6 Samsung Spinpoint F1 HD753LJ

128kb stripe
adaptive read ahead
write back
Can you confirm WB in the LSI MegaRAID console?

Cache IO?

Quote:
Originally Posted by ShadowFox19 View Post
I'm about to RAID(0) 3 OCZ Vertex SSD's, should I use my onboard ICH10R, or would I get better performance with my PERC 6/i?

Also, if I go the PERC route, how do I update the FW when using a controller?
ICH10R maxes out around 650MB/s. The 6/i can do at least 1000MB/s (maybe more). The onboard cache will also help SSD performance.

Directions to update firmware are in the OP.
Edited by DuckieHo - 7/15/09 at 8:41am
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post #2889 of 7150
Quote:
Originally Posted by DuckieHo View Post
ICH10R maxes out around 650MB/s. The 6/i can do at least 1000MB/s (maybe more). The onboard cache will also help SSD performance.

Directs to update firmware are in the OP.
Thanks!
So, will 3 Vertexes go over 650MB/s? I've read so many reviews/experiences, I can't remember if 3 of those drives will.

I meant the FW of the SSD's, not the PERC itself.
    
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post #2890 of 7150
Quote:
Originally Posted by DuckieHo View Post
Can you confirm WB in the LSI MegaRAID console?

Cache IO?


ICH10R maxes out around 650MB/s. The 6/i can do at least 1000MB/s (maybe more). The onboard cache will also help SSD performance.

Directions to update firmware are in the OP.
yep write back is definetly on
but that shouldn't matter since hdtune just does read

the cache io is set to direct IO
disk cache policy is enabled

thanks for the help so far
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