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Frequently Asked Questions

Question 3: What is the difference between iSCSI and NFS/CIFS?

iSCSI FAQ. TechnoMages, Inc.
Answer: iSCSI and NFS (Network File System) or CIFS (Common Internet File System - MS proprietary network filesystem) all allow storage access over IP networking infrastructure. However, iSCSI enables block storage transfer while NFS and CIFS transfers files. Ultimately a file is composed at the NFS/CIFS server device through block level storage access. Block level storage access offers superior performance for data intensive software applications and databases.

QUESTION: What is iSCSI?

SCSI FAQ - Editor Gary Field
iSCSI is a new standard for sending SCSI commands over an IP network. It is the networking industry's answer to Fibre Channel. Storage Area Networks are becoming very important to any company that needs large amounts of reliable storage. Fibre Channel is the defacto standard protocol for most SANs. Cisco and other networking companies are now pushing iSCSI since they ignored fibre channel for too long and don't want to be left out of the SAN market. See similar questions...

A1. What are the primary differences between NFS Versions 2 and 3?

Linux NFS faq
Version 2 clients can access only the lowest 2GB of a file (signed 32 bit offset). Version 3 clients support larger files (up to 64 bit offsets). Maximum file size depends on the NFS server's local file systems. NFS Version 2 limits the maximum size of an on-the-wire NFS read or write operation to 8KB (8192 bytes). See similar questions...

QUESTION 3: What are reportable payments?

Qualified Intermediary Frequently Asked Questions
ANSWER 3: The definition of a reportable payment differs depending upon whether the QI is a U.S. payor or a non-U.S. payor. For a U.S. payor, a reportable payment generally consists of income from all securities (U.S. and non-U.S.) and proceeds from sales of any securities (subject to exceptions for certain securities such as bonds issued outside the U.S. by U.S. issuers in bearer form). See similar questions...

Question 11: How do I do storage virtualization with iSCSI?

iSCSI FAQ. TechnoMages, Inc.
Answer: Storage virtualization is not done at a protocol level: i.e. it is not dependent on SCSI, iSCSI or Fibre Channel. It is done at a disk block level. This means that a virtualization device, like the Data Transport Processor or FalconStor's IPStor, can access storage over Fibre Channel as well as iSCSI and regular SCSI and serve it to computers attached over any of those cables/protocols. See similar questions...

Can I backup files to a CIFS or smbfs mount?

rdiff-backup FAQ
You can certainly try! Using a CIFS or smbfs mount as the mirror directory has been troublesome for some users because of the wide variety of Samba configurations. If possible, the best solution is always to use rdiff-backup over SSH in the default configuration. Under both Linux and Mac OS X, smbfs seems to be working quite well. However, it has a 2 GB file limit and is deprecated on Linux. See similar questions...

My question is: How big a difference do 3 cents make?

Inside The Woodlands: Woodlands issues Archives
It seems like a lot, from the smiling faces of the board members at The Woodlands Community Association who voted to bring the lowered tax rate to the public hearing. Last year they voted to lower the assessment rate one cent. But, as one board member put it, they didn't want to go as far as Friendswood's tax refund and put a check in the mail for residents. By the numbers, it makes about $14 difference for your typical $100,000 home in The Woodlands. Or $143 for a million-dollar home. See similar questions...

Question # 3 - What is the main difference between a retail, wholesale, and distributor account?

Greeting Card Promotions
Answer # 3 - The main difference between the retail account and the wholesale account is volume. If you're going to send a lot of cards out, then you should invest in the wholesale account. This way you'll pay less for each card that is sent. If you're simply going to send 10 - 15 cards out a month, you should sign up for a retail account. If you want to offer the SendOutCards.com system to your friends or customers, then you'll want to become a distributor. See similar questions...

Question #3: Who is working on this issue and what approaches are they taking?

Alliance for Contraception in Cats and Dogs - FAQ
Answer: At ACC&D’s Thid International Symposium on Non-Surgical Contraceptive Methods for Pet Population Control in Alexandria, VA, more than 120 representatives from universities, animal welfare organizations, foundations, companies, and government agencies from 11 countries gathered to share information and plan for the future. Read highlights and proceedings of the Symposium by clicking here. See similar questions...

Question #3: Do I need to complete any health forms?

Frequently Asked Questions (FAQ)
Answer: Yes, you need to complete a student health form and a meningitis form. If you do not complete these forms, you will have a block placed on your account and you will not be able to register. Once you are accepted, a student conduct code must also be completed. See similar questions...

QUESTION 3): Why should this be a doctoral level degree?

I ran out of the energy needed to complete some of the answe...
ANSWER: When examining this proposed program, members of the subcommittee sought to find the standards for professional doctorates. Academic administrators, both on the Health Sciences campus and in the central university, agreed that there were no such standards. Further, they agreed that standards for each doctorate differed from discipline to discipline. What seems to be common are the requirements of substantial work at the graduate level. See similar questions...

QUESTION 3: How does an entity become a QI?

Qualified Intermediary Frequently Asked Questions
ANSWER 3: To apply for QI status, an eligible entity must submit an application in accordance with section 3 of Rev. Proc. 2000-12. See similar questions...

Question. Nostradamus refers to 3 Anti-Christs. Who are (were) they?

Nostradamus FAQs
Answer. It is commonly believed that the first two Anti-Christs were Napoleon and Hitler. The identity of the third Anti-Christ is not yet known. Some people believe that Saddam Hussien will be the 3AC. Many believe that the 3AC will come from the Mid-East. Others have argued that the 3AC will come from East Asia (China, Mongolia or Korea.) This is a common topic of discussion in the Nostradamus newsgroup. See similar questions...

Question #3. If using another package, which one(s)?

LAPACK-ScaLAPACK Survey Results - ordered by question
Typically, I use pESSL, but use ScaLAPACK or PLAPACK when users have the need (prefer PLAPACK, especially to build a custom solver/routine). ScaLAPACK is comfortable in some sense because I have been using it (off-and-on) for so many years. However, the differences are all in performance, which is important, but my problems with LAPACK/ScaLAPACK all stem from the interface and that, of course, does not change. [Yes, I copied my response from the LAPACK response above .. See similar questions...

Question 6: Do I need a special HBA to run iSCSI?

iSCSI FAQ. TechnoMages, Inc.
Answer: Not necessarily, but it depends. iSCSI can be used over a standard TCP/IP link with your existing Ethernet adapter if you have a software iSCSI driver installed. A dedicated iSCSI HBA can improve performance. Some operating systems do not have software-only iSCSI drivers available, in which case, a special iSCSI HBA might be the only choice. See similar questions...

Question 7: Which software-only drivers are available for iSCSI?

iSCSI FAQ. TechnoMages, Inc.
Answer: As of November, 2003, software drivers are available for MS Windows 2000/NT/XP, Linux, Solaris and HP-UX. Here are the links to some of those drivers (in new window): See similar questions...

Question 8: What hardware iSCSI adapters are available?

iSCSI FAQ. TechnoMages, Inc.
Answer: As of November, 2003, we know of four manufacturers who have released iSCSI HBA's (in new window): We are not mentioning so called "TOE NICs", or TCP Offload Engines, because they are not optimized to be used as a server's storage peripheral and are generally not supported by major OS manufacturers. See similar questions...

Question 9: Do I need to build a separate network for iSCSI SAN?

iSCSI FAQ. TechnoMages, Inc.
Answer: No, in most cases you do not. One of the major advantages of iSCSI over Fibre Channel SANs is that it utilizes existing IP infrastructure. In some cases, however, it might be desirable to separate storage traffic into a dedicated network for performance reasons. This is especially true for installations which do not have a Gigabit Ethernet network installed. Answer: Yes--In February 2003 the IESG approved iSCSI draft 20 (with two brief modifications) as a Proposed Standard. See similar questions...

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