Hi, I'm trying to get a basic heads-up on the best approach to distributing the disks in a SAN to various servers. Hopefully you'll excuse the newbie-ish nature of all this :-) To demonstrate with a theoretical example: If I was trying to divide a 10 disk SAN between 3 servers...2 of which need...

"Jack Stewart" wrote in message ... Does anyone have (relatively recent) experience with both a NetApp NAS & EMC Celerra? If so, I'ld appreciate any comments that you might have. Our management is looking into...

Literature from storage suppliers show performance claims of over 1000 random IOPS. If they are really random over an array, are they not limited by the seek time ? So an average seek time of 8.2 ms for a SATA disk would imply a maximum of 122 seeks per second. So how can you claim over a 1000...

Hello all, I am new to SAN technology and I have what may be a dumb question but here goes (first a little background): My understanding is that one of the main differences between NAS and SAN is the location of the file system. NAS appliances have an embedded OS with 2 or more hard disks...

Hi Guys, I am going through the process of business continuity and am looking at using one of our remote sites as a hot site from a data and services point of view. This is going to be using vmware / vmotion to take care of the servers, and some site to site replication for the data, The I.T...

Hi, At job we have an HP Proliant DL380 G4 High Performance with a RAID 5 array with 4 SCSI disks with 36.4 Gb capacity each one. Last week one disk failed and the RAID 5 is working without one disk. My problem and doubt is that HP is not selling anymore 36.4Gb disks, just 72Gb or 142 Gb disks....

Hi all, I have some questions about the file managerment system on SAN architecutre. Since I want to build a SAN system that all of the servers can read/ write the same disk volumn simultaneously, a file managerment system is needed to control the data access. Is there any good data management...

Anyone remember "Storage Computer Corporation"? They had the unforgettable stock ticker symbol SOS, owned the domain name storage.com, sold RAID-7 disk arrays (which turned out to be RAID-4 with a write cache, and got the RAB all hot and bothered), and were owned/operated by Theodore (Ted)...

That disks write data out of order when write-back caching is enabled does not seem at all surprising, since that's one of the main potential benefits of having write-back caching enabled. I'd be far more concerned if you had found that disks ever wrote data out of order with write-back...

I'm looking for information on fast file system access and how to approach it and achieve it. Many super computer centers use GPFS as do some commercial, though you hear of it mostly in the edu space. Then you have the standard players: QFS, CXFS, Polyserve, Ibrix, GPFS, GFS, SANFs, etc... My...

Is anyone here running a MAID system? Copan is the first one that comes to mind. I'm interested in experience with a dense HDD system that powers off and powers on the drives for use and occasional checking. In theory and concept this is a good thing, particularly with archive or even daily...

I'm getting stuck trying to figure out how to recover from a USB mass storage "error". This is for "bulk only" protocol. The root problem is that the RTOS we use is returning errors when they don't really exist and terminating transfers in the middle. I think I can fix that problem, but in...

Dear All, I need to develop a hardware appliance that will be deployed in the data path between clients and the storage device (for eg. harddisk). This hardware box should be able to understand the native storage protocol (eg. SCSI) over which it is travelling , get the data, perform some...

Hi, I am newbie in storage. I have installed two servers in 2003 Edition. The two servers are using EVA8000 SAN, and I have created a LUN with 500GB and shared it. So, now two servers are able to look at this single point of LUN and access the files. Now the question is I am not able to see the...

Dear guru's, We want to build the following configuration: - System x3950 (2 times) running Red Hat Enterprise Linux AS (version 3 or 4) - HBA's qla2340 - San Volume Conttroler (version 3.1) - Storage cabinet: IBM Total Storage 8300

Has anyone used Monosphere in a volatile environment for prediction? I'm curious because it looks good on paper, but I'm worried that the predictive ability is only viable in a somewhat constant environment. Thanks. ~F

Just set up a External HD for backup purposes. I was hoping that there would be a way to allow it to shut off at the same time as the internal one does. I installed a Seagate 250GB Sata HD in a Venus DS3 Sata/USB E-Sata...

Hello, I have an old DS-16B and i want to reset its configuration to defaults to have the default password as defined in the documentation. I have tried several times the front panel "Reset to defaults" but the password doesn't seem to be the default one. Any idea to reset it ?

One of the windows application needs storage for its own database storage which may be hosted on CIFS share or iSCSI disk. At storage end I have NetApp storage so I want to know what is better between CIFS share or iSCSI disk on performance basis. Raju

Hi all, I'm building a RAID solution for personal archiving (general large things like raw photos, full disk backups, DVD rips, that sort of thing). I picked up a 7-disk NAS tower that I'm filling with 2 TB desktop-class SATA disks. Much of this is irreplacable data - RAID failure would be very...