Recommended File System - 3.5 TB

I'm about to build a large file server (3.5 TB):
- 8 * 500GB Sata drives
- Raid 5 (hardware)
The server will be primarly storing cd/dvd images and large graphics files.
I'm just starting my research on different file system. Any recommendations?
Thanks,
Chris....

I was about to test a couple of different file systems and ran into a problem partitioning the drive.
To recap I am using 8 * 500GB WD Sata drives on a 3ware 9500 Card. I have created one large Raid 5 array (in the 9500 BIOS program).
The 3ware instructions tell me to use parted to partition the drive (since it is large than 2TB). However, parted does not support XFS...so I'm looking for another way to partition the drive.
I used fdisk. When I start fdisk /dev/sda, it informs me that I have to set the cylinders before I can perform any actions. I set the cylinders to the maximum fdisk will allow (some very large number). I then created a partition using 1 as the start cylinder and 3500GB as the stop (which is the size of my RAID array).
I'm a little concered about the cylinder size I put in. I know it is wrong, since I don't have any idea what the cylinder size should be. Not sure cylinder size really makes sense across multiple disks though.
Also, every time I start fdisk (even to just verify the partition table), it asks me to input the cylinder size.
Any help/insights into how I can correctly partition the raid array would be appreciated.
Thanks,
Chris....

Similar Messages

Reiserfs (reiser file system) vs. ext3

Hi all,
I have 11.5.10.2 running with 10.2.0.4 on Suse Linux Enterrprise Server (SLES) 10. I am getting different message from the Linux Sysadmins about different filesystems - currently they have me set up for Reiserfs. I think they decided on the default filesystem for SLES.
Question for the experts are there any pros and cons of reiser vs ext3 - please share what good/bad experiences you have had.
Thanks,
Edited by: DBA115102 on Jun 14, 2011 2:27 PM

post SQL & results that shows Oracle knows or cares about underlying filesystem type. @Sb92075 - Please see Supported and Recommended File Systems on Linux [ID 236826.1] - there is not a sql that supports what I am saying but since we have reiserFS installed by our Linux Sysadmins ( it is the default install for SLES), wanted to find out if that is a good idea or not. From what I have read, we should have ext3.
@Karluk - Thanks. That is kind of where I am at as well. Do you have any links for Oracle whitepapers? All I have so far is MOS notes:
1. Supported and Recommended File Systems on Linux [ID 236826.1]
2. SuSE/Novell: Linux, Filesystem & I/O Type Supportability [ID 414673.1]
Thanks both sb and karluk

ISE 1.2 VM file system recommendation

Hi,
According to http://www.cisco.com/en/US/docs/security/ise/1.2/installation_guide/ise_vmware.html#wp1056074, tabl 4-1 discusses storage requirement for ISE 1.2 in VM environment. It recommends VMFS.
What are the implications when using NFS instead? Is this just a recommendation or an actual requirement?
At the moment, we use Netapp array which uses NFS for all vApps. It will be difficult to justify a creation an additional FC HBA just for this one vApp. Please explain.
TIA,
Byung

If you refer to
http://www.cisco.com/en/US/docs/security/ise/1.2/installation_guide/ise_vmware.html
It says :
Storage
•File System—VMFS
We recommend that you use VMFS for storage. Other storage protocols are not tested and might result in some file system errors.
•Internal Storage—SCSI/SAS
•External Storage—iSCSI/SAN
We do not recommend the use of NFS storage.

File system recommendation in SAP -AIX

Dear All ,
Pls check my current file system of PROD .
Filesystem    GB blocks      Used      Free %Used Mounted on
/dev/prddata1lv    120.00     66.61     53.39   56% /oracle/IRP/sapdata1
/dev/prddata2lv    120.00     94.24     25.76   79% /oracle/IRP/sapdata2
/dev/prddata3lv    120.00     74.55     45.45   63% /oracle/IRP/sapdata3
/dev/prddata4lv    120.00     89.14     30.86   75% /oracle/IRP/sapdata4
1, How much Space is recommended to increase the total space of the sapdata1..4 file system in SAP.
Currently we have assigned 120GB to each datafile. if its any recommendation of sapdata1,2,3,4 total space , how can proceed for further ?
ie ---> is there any limitation to increase the sapdata file system in SAP .
example sapdata1,...4 ---> max limit to increase is 200 GB like that .....
2,secondly only sapdata4 is keep on growing and rest of the file system are not much .
Kindly suggets
Edited by: satheesh0812 on Dec 20, 2010 7:13 AM

Hi,
Please identify what are the activities that were taking place which was consuming your space so rapidly.
Analyze if the same activities are going to be performed in future, if so for how many months.
Based on the comparision of present growth trend you can predict future trend and decide. Also analyze which table/tablespace is growing fast and what were its related data files and where are they located, you need to increase that file system to high level rather increasing all file systems sapdata1...4.
Based on gathered inputs you can easily predict future growth trends and accordingly increase your size with additional space of 10%.
You can increase your file system there is no limitation such, but you will face performance related problems. For this you need to create a separate tablespace and move the heavily growing table data files into that table space with proper index build.
Regards.
Edited by: Sita Rr Uppalapati on Dec 20, 2010 3:20 PM

SAP GoLive : File System Response Times and Online Redologs design

Hello,
A SAP Going Live Verification session has just been performed on our SAP Production environnement.
SAP ECC6
Oracle 10.2.0.2
Solaris 10
As usual, we received database configuration instructions, but I'm a little bit skeptical about two of them :
1/
We have been told that our file system read response times "do not meet the standard requirements"
The following datafile has ben considered having a too high average read time per block.
File name -Blocks read - Avg. read time (ms) -Total read time per datafile (ms)
/oracle/PMA/sapdata5/sr3700_10/sr3700.data10 67534 23 1553282
I'm surprised that an average read time of 23ms is considered a high value. What are exactly those "standard requirements" ?
2/
We have been asked to increase the size of the online redo logs which are already quite large (54Mb).
Actually we have BW loading that generates "Chekpoint not comlete" message every night.
I've read in sap note 79341 that :
"The disadvantage of big redo log files is the lower checkpoint frequency and the longer time Oracle needs for an instance recovery."
Frankly, I have problems undertanding this sentence.
Frequent checkpoints means more redo log file switches, means more archive redo log files generated. right ?
But how is it that frequent chekpoints should decrease the time necessary for recovery ?
Thank you.
Any useful help would be appreciated.

Hello
>> I'm surprised that an average read time of 23ms is considered a high value. What are exactly those "standard requirements" ?
The recommended ("standard") values are published at the end of sapnote #322896.
23 ms seems really a little bit high to me - for example we have round about 4 to 6 ms on our productive system (with SAN storage).
>> Frequent checkpoints means more redo log file switches, means more archive redo log files generated. right?
Correct.
>> But how is it that frequent chekpoints should decrease the time necessary for recovery ?
A checkpoint is occured on every logswitch (of the online redologfiles). On a checkpoint event the following 3 things are happening in an oracle database:
Every dirty block in the buffer cache is written down to the datafiles
The latest SCN is written (updated) into the datafile header
The latest SCN is also written to the controlfiles
If your redologfiles are larger ... checkpoints are not happening so often and in this case the dirty buffers are not written down to the datafiles (in the case of no free space in the buffer cache is needed). So if your instance crashes you need to apply more redologs to the datafiles to be in a consistent state (roll forward). If you have smaller redologfiles more log switches are occured and so the SCNs in the data file headers (and the corresponding data) are closer to the newest SCN -> ergo the recovery is faster.
But this concept does not really fit the reality because of oracle implements some algorithm to reduce the workload for the DBWR in the case of a checkpoint.
There are also several parameters (depends on the oracle version) which control that a required recovery time is kept. (for example FAST_START_MTTR_TARGET)
Regards
Stefan

Can you recommend a system for me?

Hello! I am looking into purchasing a new computer system to support my work projects and am not sure what to purchase. I mostly work with mass communication, photos, other graphics, print design as well as routine word processing. I use Illustrator and InDesign, but find it takes an eternity for large files to load. Even viewing photos has become challenging. My boss told me to buy a new system and told me to get whatever I needed. The problem is... I have no idea what that is!
My company utilizes a third-party IT vendor, which also helps us order and manage quipment. They made the following recommendations:
Windows 7 Professional
64 bit
8 gigs of RAM (minimum)
Seperate graphics card with 1 additional gig of memory dedicated to graphics
Is this a good recommendation? What would you change or add? I don't think I am in a position to have something that is ultra customized, so I am looking for something mostly out of the box which will fit my needs. I'll also mention that while Mac is often desirable, I am hoping to avoid that because I would be the only person on my entire team using an Apple system and I worry about integration challenges.
I welcome your thoughts and recommendations. Thanks so much!

Are you getting a desktop or notebook computer?
In terms of RAM, 8GB is the bare minimum but will at least work. I would recommend 16GB of RAM or more for a notebook computer (if possible, some models won't support that much). If you're getting a new desktop machine I'd definitely get as much RAM as possible. 24GB to 32GB would be good.
Definitely get a dedicated video card for either a notebook or desktop machine. "Integrated" graphics (a graphics chip on the motherboard that sucks on system RAM) is terrible for any creative or multimedia demands. Try to get a graphics card that supports Adobe's GPU acceleration. It makes a noticeable difference in how well Illustrator performs.
Make sure you get a fast internal hard disc drive. That makes a pretty big difference in opening and saving files as well as your boot up time. A solid state drive would be fastest, but most expensive (and you take a hit on storage capacity). Try to get a 2nd physical hard disc installed for scratch disc use (this is pretty easy to do with desktop machines). Use external USB 3.0 hard discs to back up your data.
Regarding the Mac or PC thing, that really should depend on the other applications you have to use and files you share with others. I'm on a Windows-based system due to sign industry specific software not available for the Mac platform. I also need to be able to run CorelDRAW and there's no Mac native version of it.
The Windows platform is definitely the most targeted by cyber criminals, but it's not difficult to protect yourself using a PC. A lot of people get their PCs infected by making pretty simple and obvious mistakes. Many PC users don't want to admit they got their computers infected by doing things they probably shouldn't have been doing, like seeking out pirated movies, music, porn and software. Windows users do need to make an effort to keep their machines updated with the latest security patches and have anti-virus software installed. Many don't bother with any of that out of laziness and then act like they have no responsibility when their machine gets infected. Quite a few computer users don't even have the basic knowledge to even know how to install patches, much less even find their way around in the computer's file system to keep their data organized. By the way, buying a Mac won't solve any of those knowledge problems. If cyber criminals start really concentrating on the Mac platform it's going to open a whole new can of worms concerning unprotected machines.
Tracking software is a very insidious thing. Even if the web browser and other software in your machine isn't doing it directly there's a chance other parties are looking at the packets of data your computer is exchanging with other servers. I recently watched the documentary "Citizen Four" on HBO. The things that various governments (including our own here in the US) are doing to violate privacy is pretty horrifying.

10G Database install on Linux 64bit File system Vs. Automatic Storage

Hi,
I'm installing Oracle 10G on a Dell 2950 server with an Intel 64 bit processor. The operating system is Red Hat Linux 4. It has a hardware RAID.
I've downloaded the Install Guide but I have a question about installing.
I'm confused about the File system vs. Automatic Storage management option. I will be installing on the local system, I will not be using a NAS or SAN.
Under Database Storage Options, the guide says that "Oracle recommends that the file system you choose be separate from the file systems used by the operating system or the Oracle software.".
1. Do I need to do that since I'm already using hardware RAID??
2. Which way is recommended / what do most people do: File system or Automatic Storage managment??
3. For Automatic Storage Management I read that I'd have to create an ASM Disk group that can consist of "a multiple disk device such as a RAID storage array or logical volume. However, in most cases disk groups consist of one or more individual physical disks". Do I need to reconfigure my partitions ??
I just need some input on what I should do since this is my first time installing Oracle on Linux.
Thank you.

Besides documentation there's a step-by-step guide :
http://www.oracle.com/technology/pub/articles/smiley_10gdb_install.html#asm
Many questions should be answered here.
Werner

Difference between ASM Disk Group, ADVM Volume and ACFS File system

Q1. What is the difference between an ASM Disk Group and an ADVM Volume ?
To my mind, an ASM Disk Group is effectively a logical volume for Database files ( including FRA files ).
11gR2 seems to have introduced the concepts of ADVM volumes and ACFS File Systems.
An 11gR2 ASM Disk Group can contain :
ASM Disks
ADVM volumes
ACFS file systems
Q2. ADVM volumes appear to be dynamic volumes.
However is this therefore not effectively layering a logical volume ( the ADVM volume ) beneath an ASM Disk Group ( conceptually a logical volume as well ) ?
Worse still if you have left ASM Disk Group Redundancy to the hardware RAID / SAN level ( as Oracle recommend ), you could effectively have 3 layers of logical disk ? ( ASM on top of ADVM on top of RAID/SAN ) ?
Q3. if it is 2 layers of logical disk ( i.e. ASM on top of ADVM ), what makes this better than 2 layers using a 3rd party volume manager ( eg ASM on top of 3rd party LVM ) - something Oracle encourages against ?
Q4. ACFS File systems, seem to be clustered file systems for non database files including ORACLE_HOMEs, application exe's etc ( but NOT GRID_HOME, OS root, OCR's or Voting disks )
Can you create / modify ACFS file systems using ASM.
The oracle toplogy diagram for ASM in the 11gR2 ASM Admin guide, shows ACFS as part of ASM. I am not sure from this if ACFS is part of ASM or ASM sits on top of ACFS ?
Q5. Connected to Q4. there seems to be a number of different ways, ACFS file systems can be created ? Which of the below are valid methods ?
through ASM ?
through native OS file system creation ?
through OEM ?
through acfsutil ?
my head is exploding
Any help and clarification greatly appreciated
Jim

Q1 - ADVM volume is a type of special file created in the ASM DG. Once created, it creates a block device on the OS itself that can be used just like any other block device. http://docs.oracle.com/cd/E16655_01/server.121/e17612/asmfilesystem.htm#OSTMG30000
Q2 - the asm disk group is a disk group, not really a logical volume. It combines attributes of both when used for database purposes, as the database and certain other applications know how to talk "ASM" protocol. However, you won't find any general purpose applications that can do so. In addition, some customers prefer to deal directly with file systems and volume devices, which ADVM is made to do. In your way of thinking, you could have 3 layers of logical disk, but each of them provides different attributes and characteristics. This is not a bad thing though, as each has a slightly different focus - os file system\device, database specific, and storage centric.
Q3 - ADVM is specifically developed to extend the characteristics of ASM for use by general OS applications. It understands the database performance characteristics and is tuned to work well in that situation. Because it is developed in house, it takes advantage of the ASM design model. Additionally, rather than having to contact multiple vendors for support, your support is limited to calling Oracle, a one-stop shop.
Q4 - You can create and modify ACFS file systems using command line tools and ASMCA. Creating and modifying logical volumes happens through SQL(ASM), asmcmd, and ASMCA. EM can also be used for both items. ACFS sits on top of ADVM, which is a file in an ASM disk group. ACFS is aware of the characteristics of ASM\ADVM volumes, and tunes it's IO to make best use of those characteristics.
Q5 - several ways:
1) Connect to ASM with SQL, use 'alter diskgroup add volume' as Mihael points out. This creates an ADVM volume. Then, format the volume using 'mkfs' (*nix) or acfsformat (windows).
2) Use ASMCA - A gui to create a volume and format a file system. Probably the easiest if your head is exploding.
3) Use 'asmcmd' to create a volume, and 'mkfs' to format the ACFS file system.
Here is information on ASMCA, with examples:
http://docs.oracle.com/cd/E16655_01/server.121/e17612/asmca_acfs.htm#OSTMG94348
Information on command line tools, with examples:
Basic Steps to Manage Oracle ACFS Systems

What company can retrieve photos from a micro sd card? Another casualty of SD Card blank or has unsupported file system

I have a Droid X with a sandisk 16gb micro sdhc class 4 installed. This card has been in use for about a year and wasnt even half full. I was playing music on thanksgiving and all of a sudden the music stopped. I thought hmm, It must be doing one of its many reboots. It wasnt shut off but was on my home screen and the music player had closed. I went to my music and the songs were still listed. I tried to play one and got the error message that i cannot play this file. I tried again and the songs disappeared and up came "SD Card blank or has unsupported file system" on the top bar. I tried to view files on the card on my phone and on my computer by using an sd adapter with no luck. I popped another card into my phone and it worked with no error message and i could mount and unmount the card and view the picture I took when viewing the new card on my computer. I have a 9 year old daughter who suffers from multiple chronic illnesses and have probably 200 photos on my card of her including an extensive surgery and recovery earlier this year. If a professional can retrieve my photos, I would like to know more. Im coming up on my contracts end and this has me ready to zip up a life vest and get on another boat altogether. I have seen hundreds post about this on boards but I hope this can be resolved. Thanks in advance.

Hi Matt73,
I use my phone to store all my precious moments too and I can just imagine how frustrating it must be to have memory card issues like the ones outlined in your post. I see that you have tried different things to retrieve your files from your memory card to no available. It appears that your SD memory card somehow became corrupted and most likely the data in it is now lost (sorry). While not a common issue, there is always a possibility for memory cards and any other memory device to fail. SanDisk Memory cards carry 5 year warranty, to get a replacement please contact SanDisk at 866-726-3475. Their hours of operation are 8:00 a.m. - 7:00 p.m. PT Monday to Friday or by email at [email protected] at your convenience.
I recommend backing up your media (specially pictures) on a regular basis to your computer or to an online service to protect those special memories, I personally have my phone setup to automatically save the pictures I take to my Google account and even if lost my phone I have a copy of all my pictures online. There are several website that allow you to sync your phone to upload pictures automatically. Please consider a similar option going forward.
On a personal note, I hope that your little girl's health improves that all those chronic illnesses are kept under control by your physician; I have 2 kids and I Know what is like when they don't feel well. Have a great day!
AntonioC_VZWSupport
Follow us on Twitter at www.twitter.com/VZWSupport

How do I determine if my file system is case-sensitive before I buy Photoshop CS5?

How do I determine if my file system is case-sensitive before I buy Photoshop CS5? I currently have Mac OSX 10.5.8 with an Intel Core 2 Duo Processor and 4GB of Memory.. Adobe says the following requirements are needed..
2GB of available hard-disk space for installation; additional free space required during installation (cannot install on a volume that uses a case-sensitive file system or on removable flash storage devices)
1024x768 display (1280x800 recommended) with qualified hardware-accelerated OpenGL graphics card, 16-bit color, and 256MB of VRAM
Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0
I don't know if I have a "hardware-accelerated OpenGL graphics card" or "256MB or VRAM".. I've never heard of "VRAM" before and the last bullet points is just as confusing. The last thing I want to do is buy this program and discover my Mac Book is just a tad bit to old for it, I've already done that once with a video game.

Disk Utility highlighting the drive or partition & clicking the blue Info icon may report it, but since I don't have Case Sensitive I can't tell for sure.
A simple test would be to save a small txt doc as...
test
Then save to the place same as...
TEST
If both show on the Disk, then it is, if it asks to replace test with TEST then it isn't.

Target file system layout in homogeneous DB copy

Gurus:
We have a target system whose file system layout is totally different from the source system in that:
1) the number of the file system is less than that in the source;
2) the size of each targte file system is also different from the source system.
BTW way the target has a DB running.
Can we go ahead to do the import without doing anything on above differences? i.e just go ahead to overwrite the target
DB?
Oracle on Unix.
Thanks a lot!

Hi,
its better and recommemded by SAP if you have the same DB instance SID and SAPSID.
If the target system has different SID than the source that will be more work to do for you. its makes things easyer if you have the same name as the source system.
You have two different file system and different SID. So its better to minimize those things if you can.
I think in this step where you are, I would prefer to deinstall oracle on the target system and install it again with the SAP recommendations for SAP Software which you will find on the installation guide. Because you wrote that oracle is already installed on the target system but without SAP. This means the installation was not for SAP and its different to SAP recommended..
Chooce also Oracle DB instance name and SAPSID the same name.
Good luck
HaneAtik

CS4 and Case Sensitive File Systems

Does anyone know if CS4 will support case sensitive file systems?

While I do wish all software companies including Apple completely
supported the case-sensitive file system. Many don't. I cannot pull up
an article, but I remember reading that Apple only recommended the use
of the case-sensitive file system for OS X server and if memory serves
even for that it only recommended it for the attached hard drives.
We can lament the lack of support but if you really want to change the
status quo for Adobe products then the only useful way to do so is:
...Mike

Determining file system case-sensitivity

Is there any way that isn't a hack to determine whether the specific platform that the JVM is running on uses case-sensitive file names or not?
Thanks,
Jason

> Beware that the use of case-sensitive file names is not platform dependant but rather file system dependent.
I didn't know that. That's good to know. So, would you just recommend creating a temporary file in the path in question, then checking to see if it exists using the same name with different case, then deleting the temporary file?
That's what I was trying to not do... I was looking for a more solid way. But since it isn't platform dependent, is it the only way? Or is there still a better method?
Thanks,
Jason

[SOLVED] Ring file-system for a surveillance server?

In my home, I have a (almost) dedicated (Arch-32) computer to use as a surveillance server. It continuously fetches video from a IP camera using motion and saving various GB of images and videos. Obviously, I have to manually delete older videos when the disk is getting full, but it would be better to have some kind of file-system that overrides the older files with the newer ones when it gets full.
Is there anything like that? Any recommendations?
Thanks!
PS: If your suggestion/solution could only delete videos (not images), better.
Last edited by sironitomas (2011-03-12 04:06:12)

limaunion wrote:
One possiblity is to schedule a daily cron job with something like this:
find /home/videos/ -mindepth 2 -cmin +2880 -exec rm -rf {} \;
In this case cmin=2880 (in minutes) equals 48 hours; 'man find' is your friend
Regards (from baires)
LU
Gracias! I didn't know about find's cmin, it is a great option. Exec gave me some problems so I ended up using more than one command. This is the script actually:
find /home/user/videos -cmin +4320 > temp
rm `cat temp | grep avi`
rm temp
The only thing bad about it, is that when find doesn't produce any output, rm shows a error message because there are no arguments. I know that's not the best way, but it works.
Any recommendation is accepted.
Thanks!
Last edited by sironitomas (2011-03-12 04:05:38)

Question about a file system storage option for RAC on 10g

Hello everyone,
I am in the beginning of connecting our storage and switches, and building RAC on them but there is a little argument between our specialists.
We have two database servers(10g with OEL 5) to be clustered and two visible disk groups to each of those nodes. So question is can we choose only one disk group as a shared storage leaving the rest one as the redundant copy during database a creation window while installing the database. Because some of us argue that oracle database has a built-in capability to decide on what level of RAID we store our data.
Thank you for your help.

"some of us argue that oracle database has a built-in capability to decide on what level of RAID we store our data".
That statement is not true. Oracle has optional multiplexing for control files, redo logs, and archive logs but this is not enabled by default and Oracle will not automatically enable it. If you want redundancy of tables, indexes, temp, and undo you must provide this because Oracle does not offer it standard or as an option. You can achieve redundancy with RAID at the array level, or host based mirroring (like ASM redundancy groups or Linux mdadm). This can also depend on your file system because, I think, OCFS2 does not support host based mirroring (so you cannot use mdadm or lvm to mirror the storage if you are using OCFS2).
Redundancy is not required, but it is recommended if you are using hard disks because they are prone to failures. You can configure RAID 10 across all disks in the array and present this as one big LUN to the database server. If you have two storage arrays and you want to mirror the data across the two arrays, then present all of the devices as JBOD and use Linux mdadm to create your RAID group.
RAC requires shared storage. Maybe you have a NAS or SAN device, and you will present LUNs to the Oracle database servers. That is no problem. The problem is making those LUNs usable by Oracle RAC. When I used Oracle 10g RAC, I used the Linux raw device facility to manage these LUNs and make them ready for Oracle RAC. However, raw has been desupported. Today I would use either ASM or OCFS2. This has nothing to do with redundancy, this is just because you are using RAC.

Recommended File System - 3.5 TB

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