On Sun, Feb 16, 2014 at 11:49 AM, Niels Kristian Schjødt
wrote:
>
> Hi,
>
> I'm kind of a noob when it comes to setting up RAID controllers and tweaking
> them so I need some advice here.
>
> I'm just about to setup my newly rented DELL R720 12. gen server. It's
> running a single Intel Xeon E5-
On 20.2.2014 02:47, Scott Marlowe wrote:
> On Wed, Feb 19, 2014 at 6:10 PM, Tomas Vondra wrote:
>> On 19.2.2014 19:09, Scott Marlowe wrote:
>
>>> Right now I'm testing on a machine with 2x Intel E5-2690s
>>> (http://ark.intel.com/products/64596/intel-xeon-processor-e5-2690-20m-cache-2_90-ghz-8_00
Hi,
(2014/02/20 9:13), Tomas Vondra wrote:
Hi,
On 19.2.2014 03:45, KONDO Mitsumasa wrote:
(2014/02/19 5:41), Tomas Vondra wrote:
On 18.2.2014 02:23, KONDO Mitsumasa wrote:
Hi,
I don't have PERC H710 raid controller, but I think he would like to
know raid striping/chunk size or read/write ca
On Wed, Feb 19, 2014 at 6:10 PM, Tomas Vondra wrote:
> On 19.2.2014 19:09, Scott Marlowe wrote:
>> Right now I'm testing on a machine with 2x Intel E5-2690s
>> (http://ark.intel.com/products/64596/intel-xeon-processor-e5-2690-20m-cache-2_90-ghz-8_00-gts-intel-qpi)
>> 512GB RAM and 6x600GB Intel S
On 19.2.2014 19:09, Scott Marlowe wrote:
>
> You can also do the old trick of underprovisioning and / or
> underutilizing all the space on SSDs. I.e. put 10 600GB SSDs under a
> HW RAID controller in RAID-10, then only parititon out 1/2 the storage
> you get from that. so you get 1.5TB os storage
On 19.2.2014 16:13, Merlin Moncure wrote:
> On Tue, Feb 18, 2014 at 2:41 PM, Tomas Vondra wrote:
>> On 18.2.2014 02:23, KONDO Mitsumasa wrote:
>>> Hi,
>>>
>>> I don't have PERC H710 raid controller, but I think he would like to
>>> know raid striping/chunk size or read/write cache ratio in
>>> wri
On Wed, Feb 19, 2014 at 12:09 PM, Scott Marlowe wrote:
> On Wed, Feb 19, 2014 at 8:13 AM, Merlin Moncure wrote:
>> On Tue, Feb 18, 2014 at 2:41 PM, Tomas Vondra wrote:
>>> On 18.2.2014 02:23, KONDO Mitsumasa wrote:
Hi,
I don't have PERC H710 raid controller, but I think he would l
Hi,
On 19.2.2014 03:45, KONDO Mitsumasa wrote:
> (2014/02/19 5:41), Tomas Vondra wrote:
>> On 18.2.2014 02:23, KONDO Mitsumasa wrote:
>>> Hi,
>>>
>>> I don't have PERC H710 raid controller, but I think he would like to
>>> know raid striping/chunk size or read/write cache ratio in
>>> writeback-ca
On Wed, Feb 19, 2014 at 8:13 AM, Merlin Moncure wrote:
> On Tue, Feb 18, 2014 at 2:41 PM, Tomas Vondra wrote:
>> On 18.2.2014 02:23, KONDO Mitsumasa wrote:
>>> Hi,
>>>
>>> I don't have PERC H710 raid controller, but I think he would like to
>>> know raid striping/chunk size or read/write cache ra
On Tue, Feb 18, 2014 at 2:41 PM, Tomas Vondra wrote:
> On 18.2.2014 02:23, KONDO Mitsumasa wrote:
>> Hi,
>>
>> I don't have PERC H710 raid controller, but I think he would like to
>> know raid striping/chunk size or read/write cache ratio in
>> writeback-cache setting is the best. I'd like to know
(2014/02/19 5:41), Tomas Vondra wrote:
On 18.2.2014 02:23, KONDO Mitsumasa wrote:
Hi,
I don't have PERC H710 raid controller, but I think he would like to
know raid striping/chunk size or read/write cache ratio in
writeback-cache setting is the best. I'd like to know it, too:)
The stripe size
On 18.2.2014 02:23, KONDO Mitsumasa wrote:
> Hi,
>
> I don't have PERC H710 raid controller, but I think he would like to
> know raid striping/chunk size or read/write cache ratio in
> writeback-cache setting is the best. I'd like to know it, too:)
We do have dozens of H710 controllers, but not w
On Mon, Feb 17, 2014 at 04:29:10PM +0100, DFE wrote:
2xSSD (MLC) Raid1 for Operating System (CentOS 6.4)
4xSSD (SLC) Raid10 for WAL archive and a dedicated "fast tablespace", where we
have most UPDATE actions (+ Hot spare).
10xHDD 15kRPM Raid5 for "default tablespace" (optimized for space, instea
On Mon, Feb 17, 2014 at 8:03 AM, Niels Kristian Schjødt
wrote:
> Hi,
>
> I'm kind of a noob when it comes to setting up RAID controllers and tweaking
> them so I need some advice here.
>
> I'm just about to setup my newly rented DELL R720 12. gen server. It's
> running a single Intel Xeon E5-262
Hi,
I don't have PERC H710 raid controller, but I think he would like to know raid
striping/chunk size or read/write cache ratio in writeback-cache setting is the
best. I'd like to know it, too:)
Regards,
--
Mitsumasa KONDO
NTT Open Source Software Center
(2014/02/18 0:54), Tomas Vondra wrot
The thing is, it's difficult to transfer these experiences without clear
idea of the workloads.
For example I wouldn't say 200 updates / second is a write-heavy workload.
A single 15k drive should handle that just fine, assuming the data fit
into RAM (which seems to be the case, but maybe I got th
On 17 Únor 2014, 16:03, Niels Kristian Schjødt wrote:
> Hi,
>
> I’m kind of a noob when it comes to setting up RAID controllers and
> tweaking them so I need some advice here.
>
> I’m just about to setup my newly rented DELL R720 12. gen server. It’s
> running a single Intel Xeon E5-2620 v.2 proces
Hi,
I configured a similar architecture some months ago and this is the best
choice after some pgbench and Bonnie++ tests.
Server: DELL R720d
CPU: dual Xeon 8-core
RAM: 32GB ECC
Controller PERC H710
Disks:
2xSSD (MLC) Raid1 for Operating System (CentOS 6.4)
4xSSD (SLC) Raid10 for WAL archive and a
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