Smart Array 642 + HP DL380

Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then i
added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty poor.
All drivers are up to date and raid controller has been ROM updated too,
anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael

"Mikael Antonsen" wrote in message
. ..
Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then i
added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty poor.
All drivers are up to date and raid controller has been ROM updated too,
anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael

Have you got a Write Cache enabler on your SA642?

http://h30094.www3.hp.com/product.as...0Write%20Cache

Jez T skrev:
"Mikael Antonsen" wrote in message
. ..
Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then i
added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty poor.
All drivers are up to date and raid controller has been ROM updated too,
anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael

Have you got a Write Cache enabler on your SA642?

http://h30094.www3.hp.com/product.as...0Write%20Cache




No i dont got that module, but then again i dont think ppl who bought
that controller would see the 10MB/s in write and think.. "well thats
okai" would you?

"Mikael Antonsen" wrote in message
. ..
Jez T skrev:
"Mikael Antonsen" wrote in message
. ..
Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then i
added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty poor.
All drivers are up to date and raid controller has been ROM updated too,
anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael

Have you got a Write Cache enabler on your SA642?

http://h30094.www3.hp.com/product.as...0Write%20Cache




No i dont got that module, but then again i dont think ppl who bought that
controller would see the 10MB/s in write and think.. "well thats okai"
would you?

how is your array controllers caching policy configured? 100% read? I think
it has 64M on board, and 64M or 128M cache. Max config has 192M BBWC, but I
think the battery on the cache is an option, not standard. You might be able
to improve the performance my migrating the stripe size of the logical
volumes, and also in your formatting of your logical disks to use larger
cluster sizes.

- LC

NuTCrAcKeR skrev:
"Mikael Antonsen" wrote in message
. ..
Jez T skrev:
"Mikael Antonsen" wrote in message
. ..
Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then i
added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty poor.
All drivers are up to date and raid controller has been ROM updated too,
anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael
Have you got a Write Cache enabler on your SA642?

http://h30094.www3.hp.com/product.as...0Write%20Cache




No i dont got that module, but then again i dont think ppl who bought that
controller would see the 10MB/s in write and think.. "well thats okai"
would you?

how is your array controllers caching policy configured? 100% read? I think
it has 64M on board, and 64M or 128M cache. Max config has 192M BBWC, but I
think the battery on the cache is an option, not standard. You might be able
to improve the performance my migrating the stripe size of the logical
volumes, and also in your formatting of your logical disks to use larger
cluster sizes.

- LC


Well anyways cant be right that even if not all that is done, the write
speed is 10MB/s, that is just DAMN slow, and even 12 HDD's?
I tried with the same bay on a Smart Array 5300 controller, and then i
got like 50-70MB/s in write, that is "okai", but still not what i would
call good, but its 100MB/s read.
Do you think that a Battery module would help THAT much?

-Mikael

"Mikael Antonsen" wrote in message
. ..
NuTCrAcKeR skrev:
"Mikael Antonsen" wrote in message
. ..
Jez T skrev:
"Mikael Antonsen" wrote in message
. ..
Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then i
added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty
poor.
All drivers are up to date and raid controller has been ROM updated
too, anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael
Have you got a Write Cache enabler on your SA642?

http://h30094.www3.hp.com/product.as...0Write%20Cache




No i dont got that module, but then again i dont think ppl who bought
that controller would see the 10MB/s in write and think.. "well thats
okai" would you?

how is your array controllers caching policy configured? 100% read? I
think it has 64M on board, and 64M or 128M cache. Max config has 192M
BBWC, but I think the battery on the cache is an option, not standard.
You might be able to improve the performance my migrating the stripe size
of the logical volumes, and also in your formatting of your logical disks
to use larger cluster sizes.

- LC
Well anyways cant be right that even if not all that is done, the write
speed is 10MB/s, that is just DAMN slow, and even 12 HDD's?
I tried with the same bay on a Smart Array 5300 controller, and then i got
like 50-70MB/s in write, that is "okai", but still not what i would call
good, but its 100MB/s read.
Do you think that a Battery module would help THAT much?

-Mikael

Its possible. I havent worked with 1+0 that much so I dont have much in the
way of personal experience to measure that against. But yes, the
"acceleration" features of the card can make a substancial difference, which
of course, you need the BBWC module to fully utililize.

- LC

NuTCrAcKeR skrev:
"Mikael Antonsen" wrote in message
. ..
NuTCrAcKeR skrev:
"Mikael Antonsen" wrote in message
. ..
Jez T skrev:
"Mikael Antonsen" wrote in message
. ..
Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then i
added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty
poor.
All drivers are up to date and raid controller has been ROM updated
too, anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael
Have you got a Write Cache enabler on your SA642?

http://h30094.www3.hp.com/product.as...0Write%20Cache




No i dont got that module, but then again i dont think ppl who bought
that controller would see the 10MB/s in write and think.. "well thats
okai" would you?
how is your array controllers caching policy configured? 100% read? I
think it has 64M on board, and 64M or 128M cache. Max config has 192M
BBWC, but I think the battery on the cache is an option, not standard.
You might be able to improve the performance my migrating the stripe size
of the logical volumes, and also in your formatting of your logical disks
to use larger cluster sizes.

- LC
Well anyways cant be right that even if not all that is done, the write
speed is 10MB/s, that is just DAMN slow, and even 12 HDD's?
I tried with the same bay on a Smart Array 5300 controller, and then i got
like 50-70MB/s in write, that is "okai", but still not what i would call
good, but its 100MB/s read.
Do you think that a Battery module would help THAT much?

-Mikael

Its possible. I havent worked with 1+0 that much so I dont have much in the
way of personal experience to measure that against. But yes, the
"acceleration" features of the card can make a substancial difference, which
of course, you need the BBWC module to fully utililize.

- LC



But still, 5x Write speed with that module.
I just dont think ppl that bought the 642 without would think.."ohh
thats a okai speed".
I know the acceleration will help in some ways yes, but still.
There really must be something wrong here.

"Mikael Antonsen" wrote in message
. ..
NuTCrAcKeR skrev:
"Mikael Antonsen" wrote in message
. ..
NuTCrAcKeR skrev:
"Mikael Antonsen" wrote in message
. ..
Jez T skrev:
"Mikael Antonsen" wrote in message
. ..
Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then
i added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty
poor.
All drivers are up to date and raid controller has been ROM updated
too, anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael
Have you got a Write Cache enabler on your SA642?

http://h30094.www3.hp.com/product.as...0Write%20Cache




No i dont got that module, but then again i dont think ppl who bought
that controller would see the 10MB/s in write and think.. "well thats
okai" would you?
how is your array controllers caching policy configured? 100% read? I
think it has 64M on board, and 64M or 128M cache. Max config has 192M
BBWC, but I think the battery on the cache is an option, not standard.
You might be able to improve the performance my migrating the stripe
size of the logical volumes, and also in your formatting of your
logical disks to use larger cluster sizes.

- LC
Well anyways cant be right that even if not all that is done, the write
speed is 10MB/s, that is just DAMN slow, and even 12 HDD's?
I tried with the same bay on a Smart Array 5300 controller, and then i
got like 50-70MB/s in write, that is "okai", but still not what i would
call good, but its 100MB/s read.
Do you think that a Battery module would help THAT much?

-Mikael

Its possible. I havent worked with 1+0 that much so I dont have much in
the way of personal experience to measure that against. But yes, the
"acceleration" features of the card can make a substancial difference,
which of course, you need the BBWC module to fully utililize.

- LC

But still, 5x Write speed with that module.
I just dont think ppl that bought the 642 without would think.."ohh thats
a okai speed".
I know the acceleration will help in some ways yes, but still.
There really must be something wrong here.

call HP and complain. I've said all I can here.

- LC

"NuTCrAcKeR" wrote in message
t...

"Mikael Antonsen" wrote in message
. ..
NuTCrAcKeR skrev:
"Mikael Antonsen" wrote in message
. ..
NuTCrAcKeR skrev:
"Mikael Antonsen" wrote in message
. ..
Jez T skrev:
"Mikael Antonsen" wrote in message
. ..
Okai here is the problem.
Ive plugged in the controller, and then connected a MSA30 Bay, then
i added 12 x 18GB 10K Compaq HDD's and made a RAID10 array.
Problem is i only get 10MB/s in write, that i would say is pretty
poor.
All drivers are up to date and raid controller has been ROM updated
too, anyone ever heard about this?
Read is btw 70-100MB/s so i guess that is decent.
Any suggestions is welcome

-Mikael
Have you got a Write Cache enabler on your SA642?

http://h30094.www3.hp.com/product.as...0Write%20Cache




No i dont got that module, but then again i dont think ppl who bought
that controller would see the 10MB/s in write and think.. "well thats
okai" would you?
how is your array controllers caching policy configured? 100% read? I
think it has 64M on board, and 64M or 128M cache. Max config has 192M
BBWC, but I think the battery on the cache is an option, not standard.
You might be able to improve the performance my migrating the stripe
size of the logical volumes, and also in your formatting of your
logical disks to use larger cluster sizes.

- LC
Well anyways cant be right that even if not all that is done, the write
speed is 10MB/s, that is just DAMN slow, and even 12 HDD's?
I tried with the same bay on a Smart Array 5300 controller, and then i
got like 50-70MB/s in write, that is "okai", but still not what i would
call good, but its 100MB/s read.
Do you think that a Battery module would help THAT much?

-Mikael

Its possible. I havent worked with 1+0 that much so I dont have much in
the way of personal experience to measure that against. But yes, the
"acceleration" features of the card can make a substancial difference,
which of course, you need the BBWC module to fully utililize.

- LC

But still, 5x Write speed with that module.
I just dont think ppl that bought the 642 without would think.."ohh thats
a okai speed".
I know the acceleration will help in some ways yes, but still.
There really must be something wrong here.

call HP and complain. I've said all I can here.

- LC

Actually ... there IS more I can say ... yes, it seems slower than it should
be. But also keep in mind that Writes on a Raid1+0 array will be
comparatively slow. Slower than writes on a Raid 5 array. Why? because with
Raid5, you get concurrent writes. Raid1+0 provides much faster reads that
writes, and the Smart Array controllers, while practically bulletproof, do
not have good IOps (I/O's per sec) ratintgs, as far as raid controllers go.

If you want sick array I/O for external, locally attached storage ... you
want a SmartArray P400 controller (or wait for the P800 to be released) and
SAS disk systems. Nothing can touch it. Period.

While the MSA30 is groovy and all ... it was really designed to be attached
to to the StorageWorks modular SAN solutions. Yes, loads of people attach
them directly to the servers ... but its not a high performance
implimentation.

- LC

Well anyways cant be right that even if not all that is done, the write
speed is 10MB/s, that is just DAMN slow, and even 12 HDD's?
I tried with the same bay on a Smart Array 5300 controller, and then i got
like 50-70MB/s in write, that is "okai",

SA5300 has a write cache.

but still not what i would call good, but its 100MB/s read.
Do you think that a Battery module would help THAT much?

Oh yes!!!