SE 6140 Raid 1 + 0 Stripe Size only up to 512kb?

Question, can I set a 1MB stripe size on a SE 6140 array? The storage engineer says the maximum is 512kb.

Go to the Help section in CAM. Under the section about storage profiles I found the supported stripe sizes are ... 8k, 16k, 32k, 64k, 128k, 256k, & 512k.
Seems you got good advice from your engineer.

Similar Messages

Raid-0 Stripe & Cluster Size

I just ordered 2 10k RPM Raptor S-ATA Drives from newegg, they should arrive shortly. I plan to configure my system with them as Raid-0 for increased performance, I just read the "Raid Setup Guide 865/875 LSR/FIS2R Rev 1.01" by Vango and it seems that my Mobo can be configured as Raid-0 with either the Intel ICH5R Controller or the promise controller.
Will use promise as my raid controller, it seems it's faster , now i got another question.
What about stripe size/cluster size? my research is giving me too many setting suggestions with all very different settings, can't decide on what to do. Can someone suggest some good setting, Intel raid manual suggest a 128 KB stripe for best performance, and said nothing about cluster size. Vango posted somewhere he used a 64kb for Stripe, but no info on cluster size.
I will be using 2 36 gb WB Raptors in raid-0 as my main and only windows array (disk) (Will install windows and apps+games to it) then use PATA drive for backups and movie storage. My computer is used mostly for working with office, creation of web pages, playing Everquest (big game), and watching video (divx movies). I use WinXP Pro Sp1.
Can someone suggest some general setting on stripe/cluster size that give good performance this kind of usage? what is the easiest (best) way to change the 4k default cluster size on the array after i get windows installed to it? do I bother with changing the cluster size? I got partition magic and other softtware available to do this, but dunno what's the best procedure to do this.
Thanks in Advance

I've always just used the 4K cluster size that Windows creates if you use NTFS. I honestly don't think this makes a big difference. If you want a different size, use PM to format the drive that way before installing XP. I would recommend against converting from one size to another. Did this once and ended up with all my files labeled in DOS 8.3 format. (this was NOT good for my 1000+ MP3's)
I use 64k stripe size as a compromise. My research showed that people were getting the "best scores" using a small stripe size. This seemed to come at the cost of CPU usage going up and I'm unconvinced these scores relate much to how I actually use my HDD's. They say if all your files are 128K and bigger you don't need a smaller stripe size. If you're using the Raid as your XP drive you'll actually have lots of small files so I would recommend something smaller than 128K. Maybe try 32k?
Let us know how it goes.

Stripe Size for BE6000 RAID 10 Configuration.

Hey,
What should the stripe size be for the BE6000 RAID configuration should you have to rebuild the volume? When we got a BE6000 and looked the Stripe size seemed to be set to 64K, but I see documentation saying that 128K is what should be used (although that seems to refer to the RAID 5 configurations).
Anyone know?
Thanks,
Joey

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/virtual/CUCM_BK_CF3D71B4_00_cucm_virtual_servers/CUCM_BK_CF3D71B4_00_cucm_virtual_servers_chapter_010.html doesn't make it seem like it only applies to RAID 5.

RAID Stripe size for HD Capture

Hey everyone,
So I just captured a lot of Uncompressed 8 bit 4:2:2 1080i60.
The video alone requires ~ 118 MB/s sustained transfer speed for live capture without dropped frames.
I used our new MacPro. We built an internal RAID with 3 250 GB drives all striped together. I had to decide which stripe size to use. Since we have proportionally less files than the average RAID(200 or so at the most), and because our files are HUGE (2-40 GB), I figured a large stripe size would be apropriate. I set it to the max that Mac OS X software RAID supports, though I must confess I dont remember exactly what that was.
We had little trouble with capture, sustaining over 200 MB/s bandwidth with this setup according to the Blackmagic drive speed test. However, when the drives filled up, they (expectedly) slowed down quite a bit. I frequently did speed tests, and when it got low I had to switch into shooting DVCPRO HD to avoid dropped frames.
We had similar experiences before, when I had this same setup with the default stripe size, though it seemed overall a bit better with larger stripe sizes.
My questions are thus:
1) Is there any way to use a really large stripe (2MB or so) without buying a hardware RAID controller?
2) Is my thinking correct that if I have a small number of gigantic files I should use a large stripe size?
3) If I were to wipe out all my drives (including the 250 gig startup drive), and boot off the CD, could I tie all 4 drives together into RAID-0, and then install Mac OS X to that (and presumably partition it for a data storage volume)?
4) Does anyone know of a good 2-4 port eSata PCI Express card that has drivers for the MacPro? I know sonnet has a 2 port, but its one internal SATA and one eSata. I need at least 2 eSata ports for it to be worth my time, because I have a 4 drive eSata RAID box with 4 320GB drives in it. I can use the motherboard's additional 2 SATA connectors through a backplate SATA -> eSATA converter, and with 2 more eSATA ports through PCIe card, I would be able to use all 4 eSATA drives at once.
4 ports would be even better as I would like to leave internal ports for a BD-R or HD-DVD-R (or whatever they're called) drive later on.
Thanks!
-Derek Prestegard

1) Is there any way to use a really large stripe (2MB
or so) without buying a hardware RAID controller?
256k is the largest block size available with Disk Utility.
2) Is my thinking correct that if I have a small
number of gigantic files I should use a large stripe
size?
128k is the largest size I would ever think about using. I even use 32k in many situations. You can test it and see what works best for you. Large block sizes do not always translate into higher performance. I find more drives in the striped RAID set helps me more than larger block sizes.
3) If I were to wipe out all my drives (including the
250 gig startup drive), and boot off the CD, could I
tie all 4 drives together into RAID-0, and then
install Mac OS X to that (and presumably partition it
for a data storage volume)?
You could boot from a FW800 external and use all 4 internals
for a RAID but I think you will be happier with SATA host adapters.
4) Does anyone know of a good 2-4 port eSata PCI
Express card that has drivers for the MacPro
Here are a few options for SATA host adapters on a Mac Pro that I use. The WiebeTech Tera Card TCES0-2e SATA host adapter provides two SATA ports and works with the Mac Pro using SiI-3132 Mac drivers 1.1.6. You can see a review at amug.org:
http://www.amug.org/amug-web/html/amug/reviews/articles/wiebetech/tces0/
The FirmTek SeriTek/2SE2-E 2-port host adapter can be found here:
http://www.firmtek.com/seritek/seritek-2se2-e/
It works best on the Quad as it provides boot support and SMART drive support. On the Mac Pro you use the Firmtek cardbus 2SM2-E Mac driver until FirmTek can build new EFI drivers for the Mac Pro. No boot support is provided yet but it does pass SMART data to Mac OS X. Eventually the card will have Mac Pro boot support which will be nice.
Both cards use the SiI-3132 controller. If you mix the WiebeTech and the FirmTek cards the Silicon Image Mac driver version 1.1.6 will take over and block the SMART data info that the FirmTek card supplies. As this is the case, I would go with one brand or the other but not mix them in the same Mac Pro.
I have used three cards to provide six external SATA ports. You could use two cards with your external 4-bay enclosure. I would create a striped RAID with 4 external drives and two internal drives. This should provide you with the performance you need to handle 1080HD. If you want more power you could use 7 hard drives = 3 int. and 4 external.
Have fun!

Setting RAID stripe size?

Does anyone know how you can set the stripe size used for a RAID 5 setup? Even just knowing what the default stripe size used would be helpful.
I have searched in the forums and user manual but I have not found the ability to do this anywhere. Thanks in advance.

Don't use partition magic. You can't partition RAID. Cluster size of 128 is good. After making the Raid 0 array your bios will then have the option to boot from the array as if it were one HD instead of two. Install your OS. While windows is loading the driver data base you need to press f6 to load third party SCSI or RAID drivers. You should have a floppy with the drivers. After that your done. Make sure there are no boot partitions on the single drives before you configure the array, you might have problems installing Windows. At least that's been my experience.

Raid Stripe size?

Is 512 kb a good size compared to the default 64?
Thanks
Lee

Quote
Originally posted by lugen
Hi,
I have the Modded bios I can change almost anything about it.
Lee
Can you? I am using the 5.4 modded bios and am unable to change the stripe size. If I go to anything different than the original Windows will not load.
Computer will just hang after the raid bios screen with a little blinking cursor at the top left.

Max_io_size equivalent in Linux and block/stripe sizes

I'm configuring a linux Red Hat 7.1 for Oracle 9i Rel2. I'm trying to determine the best db_block_size, and db_file_multiblock_read_count parameters. I know that these Oracle settings are dependent on the OS block size and the max_io_size of the OS.
Does anyone know what the equivalent Linux parameter for max_io_size (solaris) is and how I set it in Linux? Does resetting it involve reinstalling Linux? Any suggestions on an appropriate range to set it? Is the default Linux 1K block size OK? (The server is a Compaq DL380 with 1.4 GHertz processor and 1 GB RAM.)
Additionally, I have a Compaq 5300 Series RAID, (5i-integrated), that we plan to configure with RAID 0+1. Our controller only goes up to a stripe size of 256K, with a default of 128K. For a "general"-type database that could hold up to 80 GB of data over 50 or so tables, with a possible equal number of full-table scans and indexed scans, would you suggest I set the stripe size at 256 for the most flexiblility down the road?
I don't fully understand what it takes to configure Linux and RAID for the best I/O for Oracle. So, I'd really appreciate any suggestions, tips, or doc references that can help out.
Thanks,
Deb

the ssd is both sd and ssd.. inside the sd.conf and inside the /etc/system...
the following below is a tnf report of the IO size of my process to show the kernel is breaking the IO down.
sorry i wasn't clear on this part..
62.059582 16.185079 480 1 0x3000338ecc0 0 strategy device: 584115552256 block: 60396848 size: 1048576 buf: 0x30000a78340 flags: 34088209
306.154426 17.819569 480 1 0x3000338ecc0 0 strategy device: 584115552256 block: 60398896 size: 1048576 buf: 0x300035dcc00 flags: 34088209

RAID0 Stripe size

im using the 3ware 8506-4LP with 4 WD 250 GB Caviar Drives(7200rpm).. What would be the ideal stripe size for :
-reiserfs
-reiser 4
-xfs
does the file system make a difference? whats the best stripe fo rlinux in general..everyday desktop use..
my options are from 64k all the way upto 1MB
ive read that 64k is ideal for windows..
with the 4-way raid, im getting 100MB/s in HDTach with a stripe size of 512KB (which seems a little low)
my current plan is to use 2 of the drives with a stripe size of 64k with windows and the other two with linux.. im a general desktop user, bit of divx encoding and lots of compiling. Im using the AMD FX-55 with 2GB of RAM
so what would be the ideal linux stripe size?

Hi,
Sun support confirmed that you can have the 2 halfs of the mirror with different interlace sizes, this obviously is not the optimum setup, but will allow me to detach d61 and recreate with correct interlace size, reattach d61 and let it resync, then detach d62 and recreate with correct interlace size and finally reattach d62 and let that resync
Kevin....

Stripe SIze please help

I am about to setup a RAID 0 array on my K7N2 Delta board with 2 X 80 gig Samsung SATA drives any ideas what I would need to set the Stripe size to for a Windows XP configuration? Also does the array BIOS set it for you for optimal performance by default?

djcla,
I use a 16k Stripe vs the default 64k. I benchmarked all the options and found 16k optimal. Here were my latest Hard Drive Performance Numbers:
Take Care,
Richard

Stripe size for scatch disk array

I am building a CS5/64 workstation running on Win 7/64 that will be used to edit 1-4Gb images. The scratch disks will consist of a RAID 0 array using 3-4 WD600Gb 10K drives shortstroked on an Areca card.
What is the best stripe size for a 3-4 disk array for large images? Does Adobe publish how they R/W to the scratch disk, size of block,etc?
Larry

Right click on the root of your C: drive, and choose Properties.
Click the Hardware tab, select the drive (array) you'd like to set advanced caching on, and click the [Properties] button.
Click the Policies tab, and note the setting of the [ ] Turn off Windows write-cache buffer flushing on the device. This may not be available, depending on the drivers.
Note, specifically, that this feature can cause quite a lot of disk data to end up in your RAM for a while, if an application gets significantly ahead of the drive's ability to write data. This is where the warning about having good battery backup comes in. I'll add my own comment: Your system should be very stable as well. You don't want it crashing when a lot of writes are pending.
-Noel

Changing Stripe sizes?

Hi,
I would LIKE to experiment with stripe Sizes. I ave 512 now with the Modded BIOS for my KT3. I I were to delete a array and try a different stripe size for my RAID 0 would I have to reformat?
Thanks

http://kunibert.50megs.com/index.html
I'm going to make a image of my RAID and TRY to drop it from 512 to 256
Just need to find Ghost for XP
Lee

ASM with block device - stripe size question

Implementing a 2 node RAC system on Linux/RHEL 10gRel2. Hardware is HP SAN storageworks storage array. We plan to use External redundancy for the disk groups, and I read in one of the RACSIG Best Practices for ASM documents to select a stripe size of 1mb or as close to that as possible. The storage array stripe size max is 64k. Can anyone discuss/explain if this will be an issue if we're using External redundancy?

Hi buddy,
Can anyone discuss/explain if this will be an issue if we're using External redundancy?The idea is to improve as much as possible the I/O operations. Until 10g ASM had two options of allocate space for its files: coarse and fine. For coarse, the AU (Allocation Unit) was of 1M, for fine, its size is 128K.
Most of database files have the AU of 1M, due to this, When ASM allocates 1M of space, if You have the stripe size of 1MB, You'll guarantee one better distribuition of the I/O on all disks the LUN belongs.
Take a look here and here
Hope it helps,
Cerreia

PP3 CS3 EXPORT HALF FILE SIZE ONLY ,SHRINKEN FILES FIT SINGLE LAYER DVD ONLY

Hi!
I've regently upgraded up PP3 CS3 , Which was exported half of the files size only . I created 1 hour video/audio project on PP3 , then EXport to Encore CS3 , and check Encode setting , at the bottom right side ( ESTIMATE FILE SIZE) is about 2200 MG .Event I switched Sinle layer or Dual layer the files size Estimated the same amounth .
I created anather 2 hour video/audio project,Exprt to Encore cs3 , Estimate file size about 4 gitbite , It fited single layer 4.7 dvd only
The DVD quality play back on DVD player is only half of the original footage .
Encore cs3 is the same issue , when I forced double file to 8 gibite to burn dual layer DVD . It got error (unlimited of disc).
I could not find any setting to make it work on PP3 cs3 and Encore cs3
I have previous PP2 , It could not build straigh 2 hour DVD , But It could make 1 hour each time with original my footage or very close I'm happy with that ,Build ISO folder , each file is about 4 gibite then I used 3rd party software NERO 7. put 2 DVD together about 8 gibite and burn to Dual layer DVD
I red manual book on page 42 encore cs3 , they do not make daul layer
I paid upgraded PP3 CS3 and paid full price Encore 3 . They 're not worth what I invested ,
Any help will be wellcome . Thank you

Hi Millaard
I repeated again build my project in PP3 1 hour and 8 munite long video , Exprot Encore , I selected following setting as Type : DVD doule layer,
Direct burn without menus
Encoding setting : Preset :NTSC progressive high quality
or Medium qality
Video codec : Main concept MPEG VIDEO
Birates setting : VBR , 1 pass
minimum : 1.5
target : 4.
Max : 7.
GOP : M frame 3
M frame 15
Estimate files size : 2684.98 Mb
That 's all the setting I did , Whatever I swicthed single layer or double layer , the export file estimate no change .
If I tried longer video 2 hour , the estaimate file size is about 4. MG ,PP3 shrinken video file to fit single layer DVD 4.7 . The file size of 2 hour dvd good quality is about 8 gibite for dual layer DVD
The other option in PP3 did not work for any 3rd party sofwarer ,
It did not build ISO folder , and MPEG2 dvd did not build Video-ts at the root of dvd folder ,and both video and audio is splited could not use third party software , they exprot to Encore cs3 only
Then Encore did not burn more than 4.7 single dvd for 2 hour long half of quality
Millaar ; Please tell me what's your setting? and how many mb did you build on sing or dual layer ? Have you tried any yet ? Thank you

Stripe size

What is the optimal stripe size formatting for a drive supporting a SQL 2014 DB, on Windows 2012 R2? Is it 4K or 64K?
All SQL databases are on Fusion iO cards, and our primary database is approximately 3 TB, used for both OLAP and OLTP.
Using Fusion iO cards, through Storage Spaces, we have ran iOMeter testing as follows:
With 64k 100% read, 0% write = using 64k formatting 8,200 i/o per sec, using 4k formatting 262,000 i/o per sec.
With 64k 50% read, 50% write = using 64k formatting 7,000 i/o per sec, using 4k formatting 11,000 i/o per sec.
Thanks in advance
André

Hello,
The optimal stripe size is 64 KB for any version of SQL Server. This is because SQL Server works with 8 KB pages and groups them on Extents. Each extents is formed of 8 pages of 8 KB each one.
Hope this helps.
Regards,
Alberto Morillo
SQLCoffee.com

Raid 0 (Stripe) for OS X boot disk? Best Performance and block size

Hi,
so this is a new thread to an older question I had and would like some feedback on;
I have a new Mac Pro with 4 matched 1TB caviar black drives. I WILL be doing Full Time-Machine Backups, as well as an independant full-system backup regularly.
That being said, I have 4 drives open and am looking for suggestions. I am leaning toward 2 sets or stripes (one for the OS and one for 'work space', the former with a 32k stripe block size, the latter with 64k (will hold video, audio, scratch, and, yes, Games).
Does this sound alright? Is there an issue with Striping the boot drive? Is the block size or 32 (or 64) optimal?
Thanks!
Dan

Hi D# Shooter, regarding your question,
D3 Shooter wrote:
You brought to mind something I did not take into consideration, Time Machine. I really like the simplicity of TM as it saved me once before. So, could you tell me, for photo files, some video, how much does the striping (% wise) improve the accessing and filing of such files compared to no striping but, using internal drives (7200/WD/1TB/Caviar)? I have not done striping before and want to weigh in because of the back up storage issues now. Thanks.
J_ust give it a try and see if it is worth it for you_.
Striping:
• just enhances (reduces the access/transfer) because in practice the access is distributed in parallel across several DDM's (Old school but it works great!). I think for video and file work the advantage is that you can access the whole object sooner (rather than faster).
• this distribuition also reduces a load of old style queing on the device ove rthe path. THis was resolved in the late 1980's so no reall rocket science here.
the issues with striping are few and basically over all the raid implementations (except JBOD which of course is not raid) when compared to a single spindle. The discussions are enormous and plentiful via google and experiences and opinions vary widely.
Fir the I.T. peole its the advantage they get for access using a smart disk controller that caches goosies like indexes and stuff so that they can sustain a zillion trivial transactions/sec (i.e. banking & internet stuff).. stuff that is of no interest to me
For the creative people and many applications that are BLOB's (like video, film and remote sensing objects) getting use of the objects sooner (not faster) is of prime importance for workflow efficiencies. If you have this need then striping stiff across disks is for you!
TIMEMACHINE.app works fine as it seems fairly agnostic to whats implemented under the disk file system. MY issue with time machine is that I don't want it looking after my production stuff, only to keep an eye on my admin I.T. type stuff such as ~/ and data data files.
As posted on ths thread:
• availability is the major concern with any file system (cloud or raid or other). RAID with parity schemes and double parity schemes (Raid1,,3,5,6) and implementations such as RAID6+ LSF (log structured file) are all wonderful for this business workflows that need it.
• timely access in a workflow is another
• cost benefits are another
However a *great benefit* for me of *consolidating small storage components under one huge file system is that you dont have to COPY any thing around*. THis is marvelous especially when you think you have to move 2TB's of stuff from one place to anther. THis a takes a lot of time with elcheapo didks that dont have fast interfaces such as SATA/SAS of FC for example.
As always and has been addressed by others on this thread (Hatter) if you lose a component storage device the whole file system is hosed or severely degraded unless you spend a lot of money on full ranks of DDMs with hot spares and a very good RAID controller card. Again its money.
YEah sure you can carry some PARITY RAID implementation around across 3 didks but the storage capacity usage is dreadful. THis is why more complex RAID implemntatiosn are in groups of 10+ dDMs.. (yep poepl can argue.. but this is the mainstream).
My external disk arrays are merely two LUNs (SAS DOMAINSA) that have two file systems implemented using 2 x 4TB 1TBs DDMS - all RAID0 - no parity (no availability) - I just want speed. I look after my own "availability" withm= my archive solution. If the operation dies, I stat again. I'm happy wi that. RAID 5 has write penalty performace hits (well known +update in place+), , RAID 6+ is lousy for huge objects but good for I.T. but ok if you lose two disks in a stripe (RANK).
They all have their flaws... and mirroring a RAID0 (RAID1/0) seems to be popular with storage vendors because they can see you more disk and thats proper business workflow depends on it.
However you can achieve this stuff if you change your workflow slightly.
Other than these the rest is tech specs and stuff under the cover.
So you what is right for you and your business.
I dont like spending money on nasty elcheapo FW800 LeCIE disk enclosures with the their junky components and their ilk having been done badly on several corrupted devices and lsing TB;s of content - this is why I invested in a high speed LTO4 ULtrium data tape archive solution.
sorry for long post..
w

SE 6140 Raid 1 + 0 Stripe Size only up to 512kb?

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