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 LATEST TOPICS |  FORUMS » DRIVES » RAID-1 USE, FIRMWARE & BATCH VARIATION...

Seagate Barracuda ST31000524AS 7200.12 1TB SATA 32MB Cache 3.5IN Internal Hard Drive OEM

Seagate Barracuda ST31000524AS 7200.12 1TB SATA 32MB Cache 3.5IN Internal Hard Drive OEM
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   SKU:  
58746
   Shipping Weight:   1.4 lbs
   Part #: ST31000524AS
Subject: RAID-1 use, firmware & batch variation
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Author Date Posted Tools
Lsi Dec 01, 2011 04:58 PM Reply | Bookmark
Like (1) | Top | Bottom

Seagate supports these standard drives in RAID-1 use, but I've had problems getting identical models to perform properly--even with identical firmware versions. I would chalk this up to batch variations (which I usually don't see with WD drives) but I did have this problem recently so I have some results to demonstrate the severe performance effects.

Originally I built the RAID-1 array (Intel RST 10.8 on a Z68 chipset) with the SATA2 version of these drives, identical 1TB models with both firmwares update d to CC49. There is no public update r for the SATA3 with JC4x firmwares, and Seagate has not been helping in providing me with any unreleased update s to get them to matching versions of their shipping versions I have seen (JC45, JC47, JC4B).

CDM results of the original pair:
Drive #1:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 129.199 MB/s
Sequential Write : 128.533 MB/s
Random Read 512KB : 51.283 MB/s
Random Write 512KB : 74.589 MB/s
Random Read 4KB (QD=1) : 0.637 MB/s [ 155.6 IOPS]
Random Write 4KB (QD=1) : 0.821 MB/s [ 200.4 IOPS]
Random Read 4KB (QD=32) : 1.758 MB/s [ 429.2 IOPS]
Random Write 4KB (QD=32) : 0.779 MB/s [ 190.3 IOPS]

Test : 1000 MB [D: 0.0% (0.1/931.5 GB)] (x5)
Date : 2011/09/25 15:12:38
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

Drive #2:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 121.461 MB/s
Sequential Write : 98.634 MB/s
Random Read 512KB : 49.550 MB/s
Random Write 512KB : 64.001 MB/s
Random Read 4KB (QD=1) : 0.636 MB/s [ 155.2 IOPS]
Random Write 4KB (QD=1) : 1.226 MB/s [ 299.3 IOPS]
Random Read 4KB (QD=32) : 1.746 MB/s [ 426.3 IOPS]
Random Write 4KB (QD=32) : 1.198 MB/s [ 292.5 IOPS]

Test : 1000 MB [H: 0.0% (0.1/931.5 GB)] (x5)
Date : 2011/08/05 17:32:27
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

As you can see, there is some variation in write performance between the two drives, despite being identical models with identical firmware. For those of you thinking the idea of matching completely different drives together in RAID is handy and easy, check out how sideways these two drives go in a RAID-1 mirror:

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 40.398 MB/s
Sequential Write : 41.698 MB/s
Random Read 512KB : 27.918 MB/s
Random Write 512KB : 12.090 MB/s
Random Read 4KB (QD=1) : 0.335 MB/s [ 81.7 IOPS]
Random Write 4KB (QD=1) : 0.708 MB/s [ 172.8 IOPS]
Random Read 4KB (QD=32) : 2.004 MB/s [ 489.3 IOPS]
Random Write 4KB (QD=32) : 0.410 MB/s [ 100.2 IOPS]

Test : 1000 MB [C: 3.3% (30.5/931.4 GB)] (x5)
Date : 2011/11/27 15:46:47
OS : Windows 7 SP1 [6.1 Build 7601] (x64)

The throttling to compensate for this relatively small variation in performance completely kills the array performance, and the PCMark05 HD score for this array was 4,848 which is about on par with an old 160GB WD Caviar SE (low end 8MB cache version without NCQ) from circa 2005 or so. I RMA'd the slower drive with Seagate, and I'm hoping the replacement will perform more similar to the 1st one. When I PCMarked the two drives on their own, the two drives scored 8,729 vs 9,192. There should be some performance degradation in a mirror, but nothing like a 50% hit that I experienced here.

Instead, I used two of these new SATA3 versions with mixed firmwares (JC45 & JC4R). These drives are essentially a marketing update  to the SATA2 version, and perform essentially the same although the performance profiles are quite different between the two firmwares:

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 132.162 MB/s
Sequential Write : 126.472 MB/s
Random Read 512KB : 49.744 MB/s
Random Write 512KB : 65.086 MB/s
Random Read 4KB (QD=1) : 0.617 MB/s [ 150.7 IOPS]
Random Write 4KB (QD=1) : 0.643 MB/s [ 156.9 IOPS]
Random Read 4KB (QD=32) : 1.653 MB/s [ 403.5 IOPS]
Random Write 4KB (QD=32) : 0.593 MB/s [ 144.7 IOPS]

Test : 1000 MB [C: 3.5% (32.7/931.4 GB)] (x5)
Date : 2011/11/28 12:26:22
OS : Windows 7 SP1 [6.1 Build 7601] (x64)

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 122.526 MB/s
Sequential Write : 120.734 MB/s
Random Read 512KB : 49.221 MB/s
Random Write 512KB : 64.651 MB/s
Random Read 4KB (QD=1) : 0.632 MB/s [ 154.4 IOPS]
Random Write 4KB (QD=1) : 1.177 MB/s [ 287.4 IOPS]
Random Read 4KB (QD=32) : 1.562 MB/s [ 381.4 IOPS]
Random Write 4KB (QD=32) : 1.138 MB/s [ 277.8 IOPS]

Test : 1000 MB [F: 0.0% (0.1/931.5 GB)] (x5)
Date : 2011/11/28 12:19:02
OS : Windows 7 SP1 [6.1 Build 7601] (x64)

Once I mirrored them, the performance was much better despite still not performing quite as I had expected (no proper scaling on QD32 random reads):

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 57.984 MB/s
Sequential Write : 105.671 MB/s
Random Read 512KB : 31.841 MB/s
Random Write 512KB : 54.765 MB/s
Random Read 4KB (QD=1) : 0.351 MB/s [ 85.7 IOPS]
Random Write 4KB (QD=1) : 0.674 MB/s [ 164.5 IOPS]
Random Read 4KB (QD=32) : 0.707 MB/s [ 172.6 IOPS]
Random Write 4KB (QD=32) : 0.688 MB/s [ 168.1 IOPS]

Test : 1000 MB [C: 3.0% (28.0/931.4 GB)] (x5)
Date : 2011/11/28 18:06:05
OS : Windows 7 SP1 [6.1 Build 7601] (x64)

I very frequently find the sequential read performance throttled on Seagate mirrors with Intel RST (across multiple RST versions, and with various Seagate firmware update s having no effect), which I do not see with a pair of Hitachis in the same setup. Despite results not being ideal, the PCMark05 HD score was 7,816 which is the expected kind of performance from a RAID-1 (I measured the JC45 drive standalone at 9,422).

Bottom line, they sell enterprise SATA drives for a reason and this is the kind of performance crapshoot you can expect when you use consumer-class drives in simple RAID scenarios. If you are going to do this, I personally have had better luck with WD and Hitachi in RAID-1 on a wide variety of RAID controllers.

Topic URL: http://forums.ncix.com/forums/topic.php?id=2441854

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Lsi Dec 06, 2011 08:49 PM Reply | Bookmark
Like (1) | Top | Bottom

Re-RMA'd the SATA2 7200.12 that wasn't performing properly, and it looks like the new one is fine:

Drive which caused RAID performance issues:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 121.461 MB/s
Sequential Write : 98.634 MB/s
Random Read 512KB : 49.550 MB/s
Random Write 512KB : 64.001 MB/s
Random Read 4KB (QD=1) : 0.636 MB/s [ 155.2 IOPS]
Random Write 4KB (QD=1) : 1.226 MB/s [ 299.3 IOPS]
Random Read 4KB (QD=32) : 1.746 MB/s [ 426.3 IOPS]
Random Write 4KB (QD=32) : 1.198 MB/s [ 292.5 IOPS]

Test : 1000 MB [H: 0.0% (0.1/931.5 GB)] (x5)
Date : 2011/08/05 17:32:27
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

RMA replacement model (same part #), updated to same CC49 firmware:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 123.974 MB/s
Sequential Write : 122.770 MB/s
Random Read 512KB : 49.647 MB/s
Random Write 512KB : 68.523 MB/s
Random Read 4KB (QD=1) : 0.617 MB/s [ 150.5 IOPS]
Random Write 4KB (QD=1) : 1.129 MB/s [ 275.7 IOPS]
Random Read 4KB (QD=32) : 1.552 MB/s [ 379.0 IOPS]
Random Write 4KB (QD=32) : 1.122 MB/s [ 274.0 IOPS]

Test : 1000 MB [H: 0.0% (0.1/931.5 GB)] (x5)
Date : 2011/12/06 18:36:03
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

Most of the 4k random scores are slightly slower with the new one, but the sequential read-write speeds now match (as they should). I'll probably create  a new test RAID-1 with this drive and the other from the original mirror and see if they will now perform properly.

Tip Posting | My Postings (2309) | My Reviews (41) | My Profile | View Source
Lsi Dec 08, 2011 09:36 PM Reply | Bookmark
Like (1) | Top | Bottom

As a follow up to this to demonstrate the difference between consumer and enterprise drives, I have an HP ML350 G6 server with a failing drive in a 450GB 15K SAS RAID-1 mirror. The 15K.7 drive is failing so badly that it's idling at over 50 degrees celsius, with vibrations cycling up and down and vibrating the entire (very heavy duty) chassis. The vibrations can easily be heard outside the server room, despite the ambient noise from the usual variety of industrial-type cooling fans on the server and misc switches in the area. Consider the results above, with two drives which don't even show physical symptoms spiralling into a 50% performance hit because of relatively minor differences in performance.

In this failing array (replacement drive is coming tomorrow from HP), which isn't reporting any read or write failures, RAID sync problems etc in its RAID manager, I had logs of the array before this drive started to fail. Keep in mind that these aren't even drives from the same product generation:

Before drive issues:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 170.113 MB/s
Sequential Write : 139.903 MB/s
Random Read 512KB : 76.197 MB/s
Random Write 512KB : 97.106 MB/s
Random Read 4KB (QD=1) : 1.206 MB/s [ 294.4 IOPS]
Random Write 4KB (QD=1) : 3.540 MB/s [ 864.3 IOPS]
Random Read 4KB (QD=32) : 4.212 MB/s [ 1028.4 IOPS]
Random Write 4KB (QD=32) : 3.778 MB/s [ 922.4 IOPS]

Test : 1000 MB [D: 36.7% (153.7/419.2 GB)] (x5)
Date : 2011/09/05 14:07:04
OS : Windows Server 2008 R2 Server Standard Edition (full installation) SP1 [6.1 Build 7601] (x64)

With drive having severe vibration impending failure:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 163.482 MB/s
Sequential Write : 138.536 MB/s
Random Read 512KB : 76.071 MB/s
Random Write 512KB : 95.499 MB/s
Random Read 4KB (QD=1) : 1.182 MB/s [ 288.6 IOPS]
Random Write 4KB (QD=1) : 3.499 MB/s [ 854.4 IOPS]
Random Read 4KB (QD=32) : 4.053 MB/s [ 989.6 IOPS]
Random Write 4KB (QD=32) : 3.632 MB/s [ 886.7 IOPS]

Test : 1000 MB [D: 40.4% (169.5/419.2 GB)] (x5)
Date : 2011/12/08 21:11:52
OS : Windows Server 2008 R2 Server Standard Edition (full installation) SP1 [6.1 Build 7601] (x64)

Note: Failing 15K.7 in 15K.6/15K.7 pair; firmwares HPD6 & HPD4 respectively.

As you can see, the performance is virtually unaffected despite mismatched drives, mismatched firmwares, and one drive failing enough to vibrate the entire chassis. The controller in this case was an onboard (rebadged LSI product, and no that's not me) P410i SAS RAID with battery backed caching. Enterprise drives are in a bit of a different league than consumer drives ;)

I manage this network on call and mostly remotely, but the only indication I had which prompted my visit was the temperature of the drive being elevated ~15% above the others in the same chassis. Office employees didn't notice or recognize the change with the noise coming from the area ;-)

Tip Posting | My Postings (2309) | My Reviews (41) | My Profile | View Source
Lsi Dec 11, 2011 11:43 PM Reply | Bookmark
Like (1) | Top | Bottom

Since I'm always saying how Hitachi & WD drives don't have this type of unpredictable mirroring behaviour in my experience, I doc'd my latest Hitachi RAID-1 mirror with Intel RST 10.8. You can see how "proper" drives are consistent and mirror without throttling / severe degradation at the end of this thread:

http://forums.ncix.com/forums/?mode=showthread&forum=103&threadid=2390291&pagenumber=1&msgcount=5&subpage=1

Tip Posting | My Postings (2309) | My Reviews (41) | My Profile | View Source



 
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Messages about Seagate Barracuda ST31000524AS 7200.12 1TB SATA 32MB Cache 3.5IN Internal Hard Drive OEM

WARRANTIES (Uncle- Feb 28, 13, 3 Replies) Read this message
sata vs sata 3 hdd (Pete S- Jan 09, 13, 2 Replies) Read this message
Very high failure rate (J_B- Jul 05, 12, 5 Replies) Read this message
RAID-1 use, firmware & batch variation (Lsi- Dec 11, 11, 3 Replies) Read this message
Is the HDD recommended? (formyhunny- Oct 13, 11, 1 Replies) Read this message
General firmware updates (lsi- Sep 18, 11, 1 Replies) Read this message
Two failures in a row (Dylan_M- Sep 18, 11, 4 Replies) Read this message
Seems to have some issues (Tian_Y- Jul 26, 11, 5 Replies) Read this message
Jumper (evildead- Jun 23, 11, 1 Replies) Read this message

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