Slow file access - moving toCIFs

We are using OES11 + latest Novell client
Some file access is EXTREEMLY slow
The same Server & Workstations with NO Novell Client installed and CIFs setup is MUCH, MUCH faster
Does login Scripts work in CIFs mode ?

Hi,
What are your NSS settings on your server?
I found that I needed to set the following:
Log in as the root user, then open the /etc/opt/novell/ncpserv.conf configuration file in a text editor. Add the following at the bottom of the file:
OPLOCK_SUPPORT_LEVEL 0
Ive also added: CROSS_PROTOCOL_LOCKS 1
The above is not effective immediately - I can't remember what services I had to restart!
Please let us know how it goes.
Cheers,

Similar Messages

Very very slow file access iSCSI NSS on SLES11/XEN/OES11

Hi,
Like many Novell customers while carrying out a hardware refresh we are moving off traditional Netware 6.5 to OES11 and at the same time virtualising our environment.
We have new Dell Poweredge 620 serves attached by 10gig iSCSI to Equalogic SAN
Installed SLES will all patches and updates and XEN and then created OES11 SP2 virtual machines, these connect to NSS volume by iSCSI
Migrated files from traditional netware server to new hardware and stated testing and ran into very very slow files access times
A 3.5mb pdf file takes close to 10 minutes to open from local PC with Novell Client installed, same if no client and open via cifs. Opening same file off traditional NW6.5 server takes 3-4 seconds.
We have had a case open with Novell for almost 2 months but they are unable to resolve.
To test other options we installed VMWare ESXi on the internal usb flash drive and booted off that, created same OES11 VM and connected to NSS on SAN and same pdf open in seconds.
The current stack of SLES11/XEN/OES11 is not able to be put into production
Any ideas where the bottleneck might be? We think is in XEN.
Thanks

Originally Posted by idgandrewg
Waiting for support to tell me what the implications are of this finding and best way to fix
Hi,
As also mentioned in the SUSE forums, there is the option of using the Equallogic Hit Kit. One of the tools, next to the great autoconfigure options it has, is the eqltune tool.
Some of the stuff that I've found important:
-gro is known read performance killer. Switch if off on the iSCSI interfaces.
- if possible (meaning you have decent hardware), disable flowcontrol as this generally offers stability but at the cost of performance. If your hardware is decent, this form of traffic control should not be needed.
-To have multipath work correctly over iSCSI and starting SLES 11 SP1. Make sure kernel routing and arp handling are set correctly (not directly relevant if you only have 1 10 GB link):
net.ipv4.conf.[iSCSI interfaceX name].arp_ignore = 1
net.ipv4.conf.[iSCSI interfaceX name].arp_announce = 2
net.ipv4.conf.[iSCSI interfaceX name].rp_filter = 2
Test if traffic is actively routed over both iSCSI interfaces:
ping -I [iSCSI interfaceX name] [iSCSI Group IP EQL]
-Make sure network buffers etc are adequately set as recommended by Dell (set in /etc/sysctl.conf):
#NetEyes Increase network buffer sizes for iSCSI
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 8192 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216
net.core.wmem_default = 262144
net.core.rmem_default = 262144
-Settings for the /etc/iscsi/iscsid.conf I'm using:
node.startup = automatic # <--- review and set according to environment
node.session.timeo.replacement_timeout = 60
node.conn[0].timeo.login_timeout = 15
node.conn[0].timeo.logout_timeout = 15
node.conn[0].timeo.noop_out_interval = 5
node.conn[0].timeo.noop_out_timeout = 5
node.session.err_timeo.abort_timeout = 15
node.session.err_timeo.lu_reset_timeout = 20 #Default is 30
node.session.err_timeo.tgt_reset_timeout=20 #Default is 30
node.session.initial_login_retry_max = 12 # Default is 4
node.session.cmds_max = 1024 #< --- Default is 128
node.session.queue_depth = 128 #< --- Default is 32
node.session.iscsi.InitialR2T = No
node.session.iscsi.ImmediateData = Yes
node.session.iscsi.FirstBurstLength = 262144
node.session.iscsi.MaxBurstLength = 16776192
node.conn[0].iscsi.MaxRecvDataSegmentLength = 131072 #A lower value improves latency at the cost of higher IO throughput
discovery.sendtargets.iscsi.MaxRecvDataSegmentLeng th = 32768
node.session.iscsi.FastAbort = No # < --- default is Yes
-Have Jumbo frames configured on the iSCSI interfaces & iSCSI switch.
If you are using multipathd instead of the dm-switch provided with the Equallogic Hit kit, make sure the /etc/multipath.conf holds the optimal settings for the Equallogic arrays.
Ever since Xen with SLES 11 SP1 we have been seeing strong performing virtual servers. We still use 1GB connections (two 1GB connections for each server, serving upto 180~190Mb/s).
There could be a difference with the 10GB setup, where multipath is not really needed or used (depending on the scale of your setup). One important thing is that the iSCSI switches are doing their thing correctly. But seeing you've already found better results tuning network parameters on the Xen host, seems to indicate that's ok.
Cheers,
Willem

Time Capsule (A1409): slow file access problem and how do we create a back up of the files on timecapsule?

Time Capsule: We have a model no A1049 our network (installed by someone no longer working with us, so I don't know how it was set up or how to access any settings other than via Airport Utility)
We use it for our central file storage, and as a disk for timemachine backups from the several macs we use here.
The time capsule is running but we have slow access to files, it takes ages to bring up the list of files available, can I fix this?
I have just updated the firmware.
I would also like to know how I can back up these files to another disk.
I have searched the manuals and also the support community but I can't find the answers or any instructions other than the manuals and would appreciate help.
Thank you

The Time Capsule was designed to handle Time Machine backups from one or more Mac computers, and it will work reasonably well for that purpose.
But.....and this is a big BUT......it will not work very well at all if you try to make it act as a file server, since the disk spin up time is quite slow among other things like slow read times from the disk.
Suggest that you get with an IT specialist who can recommend the right file server solution for your network based on your needs.
As far as backing up the data on the Time Capsule, the simplest way to do this is connect a USB drive to the USB port on the Time Capsule and use the built in Archive function in AirPort Utility to make a complete copy of all of the data on the Time Capsule.
Unfortunately, the simplest way is also the slowest and the Time Capsule will not be available for Time Machine backups or file serving during the Archive procedure, which will likely take 4-6 hours or so depending on how much data might be on the Time Capsule. A good time to do this might be late at night, so the Archive copying will run overnight.
Another better option would be to use a commercially available application, like Carbon Copy Cloner to automatically back up the Time Capsule disk each day at a time that you choose. The advantage to doing it this way is that CCC will only back up the changes that have occurred since the last back up, so once the first "master" backup is done, the subsequent "incremental" backups will only take a few minutes each day.
Your IT specialist / consultant will likely have other suggestions for you as well. The advice that we have offered here is meant to be general in nature and not specific to your particular needs.

Slow file access-Elements 12: I store all my photo files (".nef" RAW files) in a RAID 1 external hard drive, which the Elements Organizer links to the reference thumbnails. Over some time - say, the past year, and especially recently, the time to bring

One further bit of information: I did recently run a "disc scan", in case there were file system errors, then ran defragmentation -- on the external drive. This did not solve the problem.

I think I'll deal with your different questions in several posts, it'll be easier for me.
josephunit2n a écrit:
A few comments: recently, for the first time, I did a full "backup catalog" routine (with external RAID storage connected) to a second external usb drive, which ran successfully (done, at the time, over longstanding concern that even the RAID 1 storage was not enough data security - as you have mentioned).
Good thing, and it's not really a surprise for me, I would have expected no slow down in a process which only reads your RAID drive data.
One big concern: in all transactions (backup catalog; move to external storage) I always ignore the "reconnect missing files" dialogue. This is due to past experience. Long ago, when I ran it routinely, it was a disaster. At first, I thought I might reconnect a few randomly missing files. While this was so long ago I cannot recall all details, everything went to hell. Even after manually locating a "missing" file, the "reconnect" never worked. The number of "missing" files skyrocketed, far out of any realistic number. Even with Adobe phone support (which is critical for such an application - and must be made available again, I have no problem paying for it), the catalog was hopelessly corrupt, and I manually built a new catalog, file-by-file. Adobe advice then: NEVER USE "RECONNECT MISSING FILES", which I have followed religiously (while also trying to be meticulous in my transactions, not to ever create any "missing" files).
I have never read Adobe advising to never reconnect missing files. Maybe it's not the best course in all circumstances, but I don't see a possible problem there. What is recommended by Adobe is to always reconnect files before doing a backup... Now, my own experience is that if you don't reconnect before a backup you get a restoration where the catalog still points to missing files and where those missing files have not been backed up, totally logical. I would not consider this question as a BIG concern.
. Finally, "just for fun", moments ago I connected the RAID storage drive, opened the organizer, and randomly opened a few images in "full screen" view - then opened a scattered group of 4 or 5 images -- and, they all came up promptly!!!!! So, this "slow access" problem isn't consistent, all the time. Also, I must comment, your advice to avoid the RAID 1 external usb drive, for future catalog storage, seems "tech superstition", which I will not harshly criticize, as I also have my own technology irrational superstitions. I believe the computer "sees" this drive no differently than any other external, usb, drive.
There's a difference between 'technology irrational superstition' and 'reasonable doubt due to ignorance' ... Understanding the problems which may arise when using a RAID drive array supposes understanding of:
- how the organizer catalog recognizes any drive in its database. That's ok for me, but I have no personal experience of such systems. What I can tell you is that most of the problems I have seen with RAID systems were of that kind.
- How efficiently the organizer deals with the OS when using a catalog stored on the main drive, with adequate RAM and scratch disk space while the files themselves are on the external RAID drive. Some organizing tasks imply writing to the files themselves. The xmp sidecar files (very small) are stored together with their raw parent. The thumbnails are stored in a database in the catalog folder...
- How the organizer works with the OS (the APIs) and the particular disk driver. (I am totally ignorant, but I have seen similar problems for other Adobe applications in the feedback forum).
... As I said, I have to leave for a moment...
To be continued!

Slow file access

I have a class that just does some trace logging and it is extremely slow
          when used with a servlet, but is very fast when used otherwise. The class
          is basically just the following:
          Date date = new Date();
          SimpleDateFormat formatter = new SimpleDateFormat ("MM/dd/yyyy HH:mm:ss");
          DataOutputStream dos = new DataOutputStream( new
          ileOutputStream( logFileName, true ) );
          dos.writeBytes( formatter.format(date)+" "+logIdStr+" "+msg+"\r\n" );
          dos.close();
          I added a flag that would skip around all the logic in the write method of
          this class so I could time the servlet without it and found it takes 10
          seconds longer to run the servlet with this logic being run to create a
          couple thousand traces. Any idea why it would be so slow?


May be this is because the DataOutputStream class is intended to write
          java primitive types in a binary portable format, so it could make CPU
          intensive checking and conversion ?
          For textual output, it should be better to use PrintWriter.
          Can you check CPU usage ? You can download OptimizeIt! and profile your
          code.
          Note also you open and close a file. How is your disk's fragmentation ?
          Finally it is more efficient to use a StringBuffer to produce the output
          string before passing to a method.
          David Thompson wrote:
          >
          > I have a class that just does some trace logging and it is extremely slow
          > when used with a servlet, but is very fast when used otherwise. The class
          > is basically just the following:
          > Date date = new Date();
          > SimpleDateFormat formatter = new SimpleDateFormat ("MM/dd/yyyy HH:mm:ss");
          > DataOutputStream dos = new DataOutputStream( new
          > ileOutputStream( logFileName, true ) );
          > dos.writeBytes( formatter.format(date)+" "+logIdStr+" "+msg+"\r\n" );
          > dos.close();
          > I added a flag that would skip around all the logic in the write method of
          > this class so I could time the servlet without it and found it takes 10
          > seconds longer to run the servlet with this logic being run to create a
          > couple thousand traces. Any idea why it would be so slow?

Very slow file-access - Opinions?

I have configured a VPN using Cisco 857 routers. There are three sites with two of them being ?spoke? sites and one being the ?hub?. The Hub site also accepts VPN client dial-in.
It all seems to work fine, however I have a question regarding performance more around the available bandwidth than anything. The Hub site is an ADSL router and the upstream connection (which is effectively the other sites downstream connection) is rated at minimum of128kb/s (but I get around 170kb/s of actual file transfer so it?s a fair bit more than that).
The problem is opening files on a Microsoft server across the link is painfully slow. I did a packet capture and to open a 35KB file the traffic back and forward across the MS ?direct hosting? or AD port 445 ends up being around 215KB for the transaction. Talk about overhead!
All other stuff seems to be acceptable across the VPN links e.g. domain authentication, email etc, but then that is either relatively small or not real-time unlike opening your MS Word document. Realistically I guess the available bandwidth is insufficient for this purpose being at best about 60 times slower than a 10MB Ethernet.
What is everybody elses thoughts/experience with this? We can upgrade the plan to a maximum of 512kb/s uplink but I guess the best solution would be a MS terminal server or Citrix server?
Thanks

Thanks, I might look at this technology next time. In the end we put a MS terminal server in for users at the satellite sites to connect to and they are very happy with that performance as its just screen, mouse and keyboard traffic going across the WAN.
BTW if anybodys interested, if you are running SBS2003 you can put in a Windows 2000 server as a terminal server, and you only have to pay for a Windows 2000 server license; user CALS and TS CALS are legally provided by the SBS2003 server (if you use a Windows 2003 server as the TS you have to pay for TS CALS which are really expensive). We did this to keep costs down for our TS solution.
http://go.microsoft.com/fwlink/?LinkId=49921

It's very slow to access file server after installed SP1 of Win7.

I found it's become very slow to access shared files on file server after installed win7 SP1, (windows6.1-KB976932-X86.exe), access same file, the win7 without sp1 is fast in 5 secs, but the pc with sp1 need more than 30 secs. And
I tried to removed the sp1, everything goes fine, access fast as others.
I don't understand what's the reason and which feature affected it, I believe the sp1 can help Win7 be more safety, but why the performance on it get worse.
And I didn't find the same question or tips on forum or website, do you really haven't the issue?
Arnold From Shanghai, China
Arnold Yu

Hi Arnold,
Windows 7 Service pack and any other Windows Updates are released to improve the performance, reliability and security of the system.
Firstly please run the performance troubleshooter:
Open the Performance troubleshooter
http://windows.microsoft.com/en-US/windows7/Open-the-Performance-troubleshooter
If it doesn't resolve the issue, Put the computer in
Clean Boot and then check to see if the issue persists.
If it still persists, please use performance monitor to trace your computer's performance:
Performance Monitoring Getting Started Guide
http://technet.microsoft.com/en-us/library/dd744567(v=ws.10).aspx
Karen Hu
TechNet Community Support

Windows Users file access SLOW

XServe 10.4.11
Connecting to my Home Directory with a XP machine. I can see all my files, but it takes forever to open them.
Launching AppleWorks 6 on the PC is fine, but opening a document off the server takes over 120 seconds to display. During the time it is 'trying' to open, it seems the PC is locked up.
This is happening on all our PCs as well. Our Macs have no problems opening the same files.
The same slow network access is happening when the PCs try to open Word documents stored on the Server as well.
What settings can I tweak (from the defaults) to allow my PC users to access their documents off the server?
We were hoping to eliminate the Netware Servers at our High School, but this test we are doing at our Adm Bldg is NOT going very well at all.

That wasn't it. Documents on PCs still take a LONG time (opening an AppleWorks 6 document for example on a PC took over 1 minute).

Slow android file access time

Hello,
My app is working very well on ios and I am trying to get it to work right in Android. The problem I am having now is that file access is very slow. Little 30 kilobyte audio files hang the program for a couple of seconds. Is this the current state of android? Looks like the kindle is going back to office depot.

I am not certain but it looks like my problem is audio file speciffic. I've read that the latency of android audio is poor but in the latest beta there is a low latency sound api. Is there anything I can do to improve the sound latency in android? If so how do I do it?

Server 2008r2 and windows 7 pro slow to no networkshare file searching and file access (green progress bar)

we are running a windows server 2008r2 sp1 domain controller and a 3com gigabit switch to which 7 windows 7 pro computers are connected. We are only using the windows server to distribute a few printers and as a network share (z drive).
we are storing all files (word documents only) centrally on the server (z share), and files are accessed and written to the z share.
Problem is that file access from the z share on the windows 7 client computers is at best buggy. we are able to browse the z-share, but as soon as we want to search the z-share for files (f.i. use file explorer with "content: memorandum") the green
progress bar shows and no search is performed. something like alphabetically sorting a directory on map/file name on the z-share also shows a green bar with no sorting. manually going to the files works.
One thing i noticed, sometimes not all files that one user created and stored on the server is visible and can be found by another user. I prefer to disable all offline file caching setting, because that feature is not used. no files should be made accessible
offline. i don't know where to change that on the server side.
I am reluctant to experiment on the server end (2008r2 sp1), so i tried a few suggested solutions on the client end (windows 7 client)
I tried disabling offline file caching
i tried properties (z share) ==> advanced and map optimizing and several options there
i tried disabling the smbv2 protocol and disabling the smbv1 protocol (using
sc.exe config lanmanworkstation depend= bowser/mrxsmb10/nsi command etc. posted by microsoft)
i tried disabling windows defender
i tried accessing the z share via ip and server name (the share is mapped via its servername, e.g. dennis-dc1\share). still the same
file searching on the clients c drive ('own harddrive') works much better, file searching on the server also works.
any suggestions or solutions that i can test on the client side, as mentioned i am reluctant to change something on the server side. if a solutions works, i prefer to change it on the server side.

Hi,
The issue could be due to windows indexing service taking long time in sorting and searching in mapped drives. Please try the steps belwo to disable windows indexing service or search service on the windows 7 client to resolve the issue.
You can click on Start and select Control Panel, click on
Programs and Features, go into the Turn Windows Features on or off section Scroll down the list and uncheck the box next to Indexing Service or Windows Search.
Best Regards,
Mandy
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Slow database access across network

I have a postgresql database setup on a server machine and have written a java program in netbeans that accesses it. The problem i have is that running the jar created by netbeans from any other machine on the network has really slow database access but running the program from netbeans itself is fine. Running the jar on the server machine is also fine.
Anyoner got any idea as to why this could be?
Tom

I don't know if this will help, I'm just wading into writing my own java apps to hit a SQL 2K db. We purchased a SQL2k/JSP driven backend on which we extended their OM to meet our needs. It was build as an extranet product but ran very poorly across the 'Net.
The biggest annoyance was not the actual transaction time of the app but the time it took from the end user to click a button and the start of the transaction.
After much testing I determined it was the JSP.
So what we have done to alieviate the issue is to have multiple regional Tomcats that 'throw' their transactions to a central colocation where the SQL servers sit (so the tomcats do the JSP managment in a sense locally to the end user) . For big clients we actually place a linux/tomcat box at the edge of their firewall. For whatever reason, I'm far too busy to determine the how now that I get the responses I need, this has completely eradicated the annoying pause between user interaction and the actual transaction to the DB server. Extended testing showed the SQL server running in the sub half second range to process a command but the tomcat rendering could take up to 2 to 5 seconds in worst case for no discernable reason. Moving the tomcat frontends to the network segment where the clients we solved it.
Of course I'm digging into swing now too and it has some slowness that the Eclipse zealots say SWT fixes but I haven't the depth or experience to properly judge the camps arguments yet.
hth...

Slow file tranfer on my pc

hai
I am having HP pavilion dv6 laptop with windows 7 and a 6gb installed ram which i got when i bought my laptop.
It seems that whenever i try to copy my files to external hdd initially it start copying with greater speeds(52mb/s....)
but when then it reduces to 1 or 2mb/s or even to kb.i have tried using teracopy but it looks like teracopy is slower than windows explorer copier.
pls help me!!

mukthar123 wrote:
hai
I am having HP pavilion dv6 laptop with windows 7 and a 6gb installed ram which i got when i bought my laptop.
It seems that whenever i try to copy my files to external hdd initially it start copying with greater speeds(52mb/s....)
but when then it reduces to 1 or 2mb/s or even to kb.i have tried using teracopy but it looks like teracopy is slower than windows explorer copier.
pls help me!!
What kinda ext HDD do you have and you sure it's not full to capacity that it slows down? If your drive is too full that will cause it to slow down when moving files.
I am a Volunteer to help others on here-not a HP employee.
Replies aren't online 24/7 because of Time Zone differences.
Remember in this Day and Age of Computing the Internet is Knowledge at your fingertips if you choose understand it. -2015-

PATH/FILE ACCESS ERROR CITRIX

Hello!
My customer is using BPC 5.1 and users are accessing BPC through Citrix.
Whenever they send data (button that run MNU_ESUBMIT_REFSCHEDULESHEET_REFRESH), they are getting a popup window that says "SAP - Path/File Access Error". When they click ok on this window, the data sends anyway.
However, we'd still want this resolved as the clients do not feel comfortable having their users see this message. We also noticed that when they are not on Citrix, it sends without any issues.
Your thoughts would be greatly appreciated!
Thanks,
Fabiola
Edited by: Fabiola Vezza on Jan 21, 2010 2:36 PM
Edited by: Fabiola Vezza on Jan 21, 2010 2:37 PM

I have moved this thread to the BPC MS forum. Notice the sticky [note|Please do not post BPC, SSM or FI/CO questions here!; at the top of the FPM - General (PCM, FC, Other) Forum whereby we announced new dedicated forums for BPC which are the proper place to post your questions regarding BPC in the future.
[Jeffrey Holdeman|http://wiki.sdn.sap.com/wiki/display/profile/Jeffrey+Holdeman]
SAP BusinessObjects
Enterprise Performance Management
Regional Implementation Group

Help please, spacific file update only changed files when moved

I record live bands and file size can be very large when i make changes to files i want to save time and resources by only updating what has changed without replacing the whole file. when moving files from desktop to external drive.
say i have a file named "jam" that i add files to on my external drive then i copy it to my internal drive, do some edditing and add some files. when i move it back to external drive i want to update the "jam" file add the new files and changed files without having to keep track of the changed files and not transfer the files that havent changed. can anyone help?

Only files and folders below directory "/emmc" will show up in windows explorer.
You will also not be able to edit (add/delete) files to the /system/media/audio/notifications folder (or just about any folder above /emmc) . This is because you do not have administrator access (for lack of a better term) to the phone.
So, if it's that important to you, you'll have to find a way to tell the phone you're an administrator
Windows Explorer correctly identifies these as two separate drives. There is, after all, a built in drive as well as the swappable SDcard.
Sorry I can't be of more help.

Does raid 0 double file access in a MP?

I am thinking of a MP (Quad 2.66 or 2.94) set up with dual drive striping or, the iMac i7. I know both have the same processor (Xeon has a slight edge) but, will there be a big difference with the striping so I should go the distance and get the MP instead?
Any one with knowledge if the striping will double (probably 2- 2TB drives in the MP (Hitachi), vs. the 1 - 2TB in the iMac) file access of photo processing an advantage with the MP?
Thanks....

All one can say is that in a perfect striped RAID using identical drives the read/write speeds are roughly double for two drives compared to the single drive.
However, the advantage declines as the RAID array becomes filled. The more files on the array the slower it becomes losing most of its edge over a single drive. Also a striped RAID is vulnerable to drive failure. If one drive fails then all the data on the RAID are lost and unrecoverable.
In the vast majority of home systems there's little justification for using RAIDs. Striped RAIDs are used mainly in enterprise installations where large amounts of fast server storage is needed and where mirrored RAIDs are used to provide data redundancy and backup.
RAID Basics
For basic definitions and discussion of what a RAID is and the different types of RAIDs see RAIDs. Additional discussions plus advantages and disadvantages of RAIDs and different RAID arrays see:
RAID Tutorial;
RAID Array and Server: Hardware and Service Comparison>.
Hardware or Software RAID?
RAID Hardware Vs RAID Software - What is your best option?
RAID is a method of combining multiple disk drives into a single entity in order to improve the overall performance and reliability of your system. The different options for combining the disks are referred to as RAID levels. There are several different levels of RAID available depending on the needs of your system. One of the options available to you is whether you should use a Hardware RAID solution or a Software RAID solution.
RAID Hardware is always a disk controller to which you can cable up the disk drives. RAID Software is a set of kernel modules coupled together with management utilities that implement RAID in Software and require no additional hardware.
Pros and cons
Software RAID is more flexible than Hardware RAID. Software RAID is also considerably less expensive. On the other hand, a Software RAID system requires more CPU cycles and power to run well than a comparable Hardware RAID System. Also, because Software RAID operates on a partition by partition basis where a number of individual disk partitions are grouped together as opposed to Hardware RAID systems which generally group together entire disk drives, Software RAID tends be slightly more complicated to run. This is because it has more available configurations and options. An added benefit to the slightly more expensive Hardware RAID solution is that many Hardware RAID systems incorporate features that are specialized for optimizing the performance of your system.
For more detailed information on the differences between Software RAID and Hardware RAID you may want to read: Hardware RAID vs. Software RAID: Which Implementation is Best for my Application?

Slow file access - moving toCIFs

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