artman
> *Sent:* Thursday, September 17, 2015 4:05 PM
> *To:* Andrija Panic
> *Cc:* ceph-users@lists.ceph.com
> *Subject:* Re: [ceph-users] which SSD / experiences with Samsung 843T vs.
> Intel s3700
>
> I ended up having 7 total die. 5 while in service, 2 more when I hooked
>
s.ceph.com <mailto:ceph-users@lists.ceph.com>
> Subject: Re: [ceph-users] which SSD / experiences with Samsung 843T vs. Intel
> s3700
>
> I ended up having 7 total die. 5 while in service, 2 more when I hooked them
> up to a test machine to collect information from t
-users-boun...@lists.ceph.com] On Behalf Of
Quentin Hartman
Sent: Thursday, September 17, 2015 4:05 PM
To: Andrija Panic
Cc: ceph-users@lists.ceph.com
Subject: Re: [ceph-users] which SSD / experiences with Samsung 843T vs. Intel
s3700
I ended up having 7 total die. 5 while in service, 2 more when I
Well, if you look at the very very fine print on their warranty statement
and some spec sheets they say they are only supposed to be used in "Client
PCs" and if the application exceeds certain write amounts per day, even if
it's below the total volume of writes the drive is supposed to handle, it
v
" came to the conclusion they we put to an "unintended use". "
wtf ? : Best to install them inside shutdown workstation... :)
On 18 September 2015 at 01:04, Quentin Hartman wrote:
> I ended up having 7 total die. 5 while in service, 2 more when I hooked
> them up to a test machine to
I ended up having 7 total die. 5 while in service, 2 more when I hooked
them up to a test machine to collect information from them. To Samsung's
credit, they've been great to deal with and are replacing the failed
drives, on the condition that I don't use them for ceph again. Apparently
they sent s
Another one bites the dust...
This is Samsung 850 PRO 256GB... (6 journals on this SSDs just died...)
[root@cs23 ~]# smartctl -a /dev/sda
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-3.10.66-1.el6.elrepo.x86_64]
(local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.
On Tue, Sep 8, 2015 at 9:05 AM, Mark Nelson wrote:
> A list of hardware that is known to work well would be incredibly
>> valuable to people getting started. It doesn't have to be exhaustive,
>> nor does it have to provide all the guidance someone could want. A
>> simple "these things have worked
minen
-Original Message-
From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com
<mailto:ceph-users-boun...@lists.ceph.com>] On Behalf Of Jan
Schermer
Sent: 7. syyskuuta 2015 11:44
To: Christian Balzer
Cc: ceph-users; Межов Игорь
xperiences from several different
>> threads could be referenced easily in the future. I took a look at
>> wiki.ceph.org and there was nothing on this.
>>
>> --
>> Eino Tuominen
>>
>> -Original Message-
>> From: ceph-users [mailto:ceph-use
en
>
> -Original Message-
> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com
> <mailto:ceph-users-boun...@lists.ceph.com>] On Behalf Of Jan Schermer
> Sent: 7. syyskuuta 2015 11:44
> To: Christian Balzer
> Cc: ceph-users; Межов Игорь Александрович
> Subject:
n Schermer
> Sent: 7. syyskuuta 2015 11:44
> To: Christian Balzer
> Cc: ceph-users; Межов Игорь Александрович
> Subject: Re: [ceph-users] which SSD / experiences with Samsung 843T vs.
> Intel s3700
>
> Re: Samsungs - I feel some of you are mixing and confusing different
> Samsun
] which SSD / experiences with Samsung 843T vs. Intel
s3700
Re: Samsungs - I feel some of you are mixing and confusing different Samsung
drives.
There is a DC line of Samsung drives meant for DataCenter use. Those have EVO
(write once read many) and PRO (write mostly) variants.
You don't wa
Re: Samsungs - I feel some of you are mixing and confusing different Samsung
drives.
There is a DC line of Samsung drives meant for DataCenter use. Those have EVO
(write once read many) and PRO (write mostly) variants.
You don't want to go anywhere near the EVO line with Ceph.
Then there are "re
riday, September 04, 2015 12:39 PM
> *To:* James (Fei) Liu-SSI
> *Cc:* Quentin Hartman; ceph-users
>
> *Subject:* Re: [ceph-users] which SSD / experiences with Samsung 843T vs.
> Intel s3700
>
>
>
> James,
>
>
>
> there are simple FIO tests or even DD test on Lin
ndrija.pa...@gmail.com>]
Sent: Friday, September 04, 2015 12:21 PM
To: Quentin Hartman
Cc: James (Fei) Liu-SSI; ceph-users
Subject: Re: [ceph-users] which SSD / experiences with Samsung 843T vs. Intel
s3700
Quentin,
try fio or dd with O_DIRECT and D_SYNC flags, and you will see less than 1MB/
; Thanks,
>
> James
>
>
>
> *From:* Andrija Panic [mailto:andrija.pa...@gmail.com]
> *Sent:* Friday, September 04, 2015 11:53 AM
> *To:* James (Fei) Liu-SSI
> *Cc:* Quentin Hartman; ceph-users
>
> *Subject:* Re: [ceph-users] which SSD / experiences with Samsung 843
:* Andrija Panic [mailto:andrija.pa...@gmail.com]
> *Sent:* Friday, September 04, 2015 12:21 PM
> *To:* Quentin Hartman
> *Cc:* James (Fei) Liu-SSI; ceph-users
>
> *Subject:* Re: [ceph-users] which SSD / experiences with Samsung 843T vs.
> Intel s3700
>
>
>
> Quentin,
&g
little bit strange over here.
Regards,
James
From: Andrija Panic [mailto:andrija.pa...@gmail.com]
Sent: Friday, September 04, 2015 12:21 PM
To: Quentin Hartman
Cc: James (Fei) Liu-SSI; ceph-users
Subject: Re: [ceph-users] which SSD / experiences with Samsung 843T vs. Intel
s3700
Quentin,
try
gt;>>> Would be possible to get to know your configuration of your system?
>>>> What kind of workload are you running? Do you use Samsung SSD as separate
>>>> journaling disk, right?
>>>>
>>>>
>>>>
>>>> Than
; kind of workload are you running? Do you use Samsung SSD as separate
> journaling disk, right?
>
>
>
> Thanks so much.
>
>
>
> James
>
>
>
> *From:* ceph-users [mailto:ceph-users-boun...@lists.ceph.com] *On Behalf
> Of *Quentin Hartman
> *Sent:* Thursda
gt;>> What kind of workload are you running? Do you use Samsung SSD as separate
>>> journaling disk, right?
>>>
>>>
>>>
>>> Thanks so much.
>>>
>>>
>>>
>>> James
>>>
>>>
>>>
>>>
]
Sent: Friday, September 04, 2015 11:53 AM
To: James (Fei) Liu-SSI
Cc: Quentin Hartman; ceph-users
Subject: Re: [ceph-users] which SSD / experiences with Samsung 843T vs. Intel
s3700
Hi James,
I had 3 CEPH nodes as folowing: 12 OSDs(HDD) and 2 SSDs (2x 6 Journals
partitions on each SSD) - SSDs
t;
>>
>>
>> James
>>
>>
>>
>> *From:* ceph-users [mailto:ceph-users-boun...@lists.ceph.com] *On Behalf
>> Of *Quentin Hartman
>> *Sent:* Thursday, September 03, 2015 1:06 PM
>> *To:* Andrija Panic
>> *Cc:* ceph-users
>> *Subject:*
, September 03, 2015 1:06 PM
> *To:* Andrija Panic
> *Cc:* ceph-users
> *Subject:* Re: [ceph-users] which SSD / experiences with Samsung 843T vs.
> Intel s3700
>
>
>
> Yeah, we've ordered some S3700's to replace them already. Should be here
> early next week.
[mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of
Quentin Hartman
Sent: Thursday, September 03, 2015 1:06 PM
To: Andrija Panic
Cc: ceph-users
Subject: Re: [ceph-users] which SSD / experiences with Samsung 843T vs. Intel
s3700
Yeah, we've ordered some S3700's to replace them already.
Yeah, we've ordered some S3700's to replace them already. Should be here
early next week. Hopefully they arrive before we have multiple nodes die at
once and can no longer rebalance successfully.
Most of the drives I have are the 850 Pro 128GB (specifically MZ7KE128HMGA)
There are a couple 120GB 8
I really advise removing the bastards becore they die...no rebalancing
hapening just temp osd down while replacing journals...
What size and model are yours Samsungs?
On Sep 3, 2015 7:10 PM, "Quentin Hartman"
wrote:
> We also just started having our 850 Pros die one after the other after
> about
We also just started having our 850 Pros die one after the other after
about 9 months of service. 3 down, 11 to go... No warning at all, the drive
is fine, and then it's not even visible to the machine. According to the
stats in hdparm and the calcs I did they should have had years of life
left, so
Hi ,
We got a good deal on 843T and we are using it in our Openstack setup ..as
journals .
They have been running for last six months ... No issues .
When we compared with Intel SSDs I think it was 3700 they were shade
slower for our workload and considerably cheaper.
We did not run any syntheti
We have some 850 pro 256gb ssds if anyone interested to buy:)
And also there was new 850 pro firmware that broke peoples disk which was
revoked later etc... I'm sticking with only vacuum cleaners from Samsung
for now, maybe... :)
On Aug 25, 2015 12:02 PM, "Voloshanenko Igor"
wrote:
> To be hones
To be honest, Samsung 850 PRO not 24/7 series... it's something about
desktop+ series, but anyway - results from this drives - very very bad in
any scenario acceptable by real life...
Possible 845 PRO more better, but we don't want to experiment anymore... So
we choose S3500 240G. Yes, it's cheape
And should I mention that in another CEPH installation we had samsung 850
pro 128GB and all of 6 ssds died in 2 month period - simply disappear from
the system, so not wear out...
Never again we buy Samsung :)
On Aug 25, 2015 11:57 AM, "Andrija Panic" wrote:
> First read please:
>
> http://www.s
First read please:
http://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/
We are getting 200 IOPS in comparison to Intels3500 18.000 iops - those
are constant performance numbers, meaning avoiding drives cache and
running for longer period of tim
any details on that ?
On Tue, 25 Aug 2015 11:42:47 +0200, Andrija Panic
wrote:
> Make sure you test what ever you decide. We just learned this the hard way
> with samsung 850 pro, which is total crap, more than you could imagine...
>
> Andrija
> On Aug 25, 2015 11:25 AM, "Jan Schermer" wrote:
Make sure you test what ever you decide. We just learned this the hard way
with samsung 850 pro, which is total crap, more than you could imagine...
Andrija
On Aug 25, 2015 11:25 AM, "Jan Schermer" wrote:
> I would recommend Samsung 845 DC PRO (not EVO, not just PRO).
> Very cheap, better than I
I would recommend Samsung 845 DC PRO (not EVO, not just PRO).
Very cheap, better than Intel 3610 for sure (and I think it beats even 3700).
Jan
> On 25 Aug 2015, at 11:23, Christopher Kunz wrote:
>
> Am 25.08.15 um 11:18 schrieb Götz Reinicke - IT Koordinator:
>> Hi,
>>
>> most of the times I
Am 25.08.15 um 11:18 schrieb Götz Reinicke - IT Koordinator:
> Hi,
>
> most of the times I do get the recommendation from resellers to go with
> the intel s3700 for the journalling.
>
Check out the Intel s3610. 3 drive writes per day for 5 years. Plus, it
is cheaper than S3700.
Regards,
--ck
__
Hi,
most of the times I do get the recommendation from resellers to go with
the intel s3700 for the journalling.
Now I got an offer for systems with MLC 240 GB SATA Samsung 843T.
A quick research on google shows that that ssd is not as good as the
intel, but good, server grade 24/7 etc. and not
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