Network Working Group G. Malkin
Request for Comments: 1206 FTP Software, Inc.
FYI: 4 A. Marine
Obsoletes: RFC 1177 SRI
February 1991
FYI on Questions and Answers
Answers to Commonly asked “New Internet User” Questions
Status of this Memo
This FYI RFC is one of two FYI’s called, “Questions and Answers”
(Q/A), produced by the User Services Working Group of the Internet
Engineering Task Force (IETF). The DDN NIC (Defense Data Network, Network
Information Center) provides an information retrieval interface to
the database that is also called WHOIS. This memo provides information for the Internet community. 32
1. Introduction
New users joining the Internet community have the same questions as
did everyone else who has ever joined. Another advantage is that administrators can also track who has viewed which documents. When you share documents with traditional data rooms, you’re effectively hoping for the best. How do I obtain OSI Standards documents? The best virtual data rooms for due diligence comply with top security standards such as ISO27001, SOC1, and SOC2, as well as use strong encryption and offer a lot of additional security features.
Government is available from the NIC and
from the National Institute of Standards and Technology (NIST). The NIC also provides an automatic mail service
for those sites which cannot use FTP. It is also available from the NIC in hardcopy for $10, as are
individual RFCs. All RFCs are considered public domain unless
explicitly marked otherwise. All decisions of the IAB are made public. The current Chair of the IAB is Vint Cerf. RFC 1206 FYI Q/A – for New Internet Users February 1991
The IAB has two principal subsidiary task forces:
1) Internet Engineering Task Force (IETF)
2) Internet Research Task Force (IRTF)
Each of these Task Forces is led by a chairman and guided by a
Steering Group which reports to the IAB through its chairman. They
are used by a subgroup of the User Services Working Group to discuss
the Q/A FYIs. If you are using anything other than a data room to store all of this information you are taking risks. They also prevent data breaches and data theft, especially from outside competitors. PEG mapping is delayed until first write, saving space
Disk I/O:
Reads — straight forward (either satisfy from cache, or make room)
If reading RAID 5 in degraded mode (disk failed), may need to reconstruct
Writes
Invalidate cached copy of data
Copy data into NVRAM (might need to wait for space)
Return “OK” to host system
Might initiate back-end write, depending on policy
Flushing data to back end
In mirrored storage class, just write both copies
In RAID 5:
“promote” RB from RAID 5 to mirrored
May require old mirrored data to become RAID 5 to get space
Write both mirrored copies
Update virtual device, PEG, and PEX tables
Flushing demoted data to RAID 5
Technique 1: Per-RB writes
Hold old parity block in NVRAM
Write data block to disk (holding it in NVRAM too?)
XOR block with old value in cache and apply to parity
Write parity block
Technique 2: Logging
Append demoted RBs to “current RAID 5 PEG”
Write PEGs in batches
Often will write complete PEGs
May begin in the middle of PEG from previous batch
Hold old parity and index of highest-numbered valid RB in NVRAM
In cases of space crunch, may resort to traditional read-modify-write
Cleaning and hole plugging
Demoted RBs create holes in mirrored PEGs
Mirrored PEGs can be cleaned and converted to RAID 5
(stick the blocks in holes in other PEGs)
Promoted RBs create holes in RAID 5 PEGs
For mostly empty PEGs, copy data to “current RAID 5 PEG”
If RAID 5 PEG is almost full, clean by hole-plugging
Saves copying the bulk of the data
Requires parity & old value to be read
Background load-balancing when new disks added
Migrate PEXes to new disks to balance load
When new disk added, old PEGs will not be full width
Copy data from old PEGs to new, full-width ones
How is performance?
OLTP–much better than Clariion RAID, noticeably slower than JBOD
Fig. 6b: Explain shape
Up to 8 drives, increasing room for RAID 1 decreases migration costs
After 8 disks, smaller benefit from having more spindles
(two reads are more likely to be able to be done in parallel)
Micro benchmarks (Fig. 7) — all kill Clariion
Sequential reads & writes good
Random writes not so good (but competing w. This data has been generated by GSA Content Generator Demoversion.
In such situations, the usage of a virtual data room will not be deemed feasible. Once your files are in the virtual repository, you can invite all your team members to the data room. Simplicity of application for the guests that you invite to this info area to review files. As your investors, we’re always happy to double check the VDRs of our portfolio companies to make sure all the necessary files are there. None of the other pilots seemed keen to contradict
him, especially since Vadic was notorious for mysteriously closing people’s
files and altering their permissions if they annoyed him. The three TTY fighters closed in, and Vadic
lined up to kill Luke’s process once and for all. Luke’s response
practically melted the terminal. Rapid response time facilitates online negotiations of contracts. The index is updated
online each time an RFC is issued. Finally, the Index notes whether
or not an RFC is obsoleted or updated by another RFC, and gives
the number of that RFC, or if an RFC itself obsoletes or updates
another RFC, and gives that RFC number. Generally, VDRs offer either a set number or a range. Data has been created by GSA Content Generator DEMO.
What are Virtual Data Rooms or VDRs? Other companies tend to gravitate toward physical data rooms wherein hard copies of data are being stored. Overall, virtual data rooms are a more cost-effective and confidential method of sharing and storing a company’s confidential information. In addition, EcomNets and its vendors are constantly researching new approaches around power and cooling alternatives to reduce energy consumption even more in the future. Requests permissions are where administrators can turn on. In addition, you can send electronic mail to users
at any Internet site and to users on many non-Internet sites that
are accessible via electronic mail. There are two types of newsgroups: moderated and unmoderated. Internet Drafts are generally in the format of an RFC with
some key differences:
– The Internet Drafts are not RFC’s and are not a numbered
document series. RFC 1206 FYI Q/A – for New Internet Users February 1991
the IETF and Internet Drafts Directories. RFC 1206 FYI Q/A – for New Internet Users February 1991
of smaller networks. RFC 1206 FYI Q/A – for New Internet Users February 1991
become aware of additional questions that should be included, and of
deficiencies or inaccuracies that should be amended in this document.