Scalable Linear Recording

Scalable Linear Recording is the name used by Tandberg Data for its line of QIC based tape drives.

The earliest SLR drive, the SLR1, has a capacity of 250 MB, while the latest drive, the SLR140, has a capacity of 70 GB. The term SLR is now often used to refer to QIC tapes, as they are the only drives still manufactured that use them.

Generations

Quarter inch formats

Generation	SLR1	SLR2	SLR3	SLR4	SLR4-DC	SLR5	SLR24 SLR6	SLR32 MLR1	SLR50 MLR3
Release Date	1986	1988	1990	1992		1997		1996	1997
Data Capacity	250 MB	525 MB	1 GB	2.5 GB		4 GB	12 GB	16 GB	20 GB
Transfer Rate (kB/s)	84.8	199	197	296	280	387	1200	1500	2000
Tape Length (m)	311					457		457	462

NOTE: MLR stands for Multi-channel Linear Recording.

Eight millimeter formats

Generation	SLR7	SLR40	SLR60	SLR75	SLR100	SLR140	SLR200	SLR400
Release Date	1997					2003	TBA	TBA
Data Capacity	20 GB	20 GB	30 GB	38 GB	50 GB	70 GB	100 GB	200 GB
Transfer Rate (kB/s)	3000	2500	4000	4300	5000	6000	16000	32000
Tape Length (m)	470.9	187.5	278.9	350.5	457.2	505.9

gollark: ```Internet Protocols and Support webbrowser — Convenient Web-browser controller cgi — Common Gateway Interface support cgitb — Traceback manager for CGI scripts wsgiref — WSGI Utilities and Reference Implementation urllib — URL handling modules urllib.request — Extensible library for opening URLs urllib.response — Response classes used by urllib urllib.parse — Parse URLs into components urllib.error — Exception classes raised by urllib.request urllib.robotparser — Parser for robots.txt http — HTTP modules http.client — HTTP protocol client ftplib — FTP protocol client poplib — POP3 protocol client imaplib — IMAP4 protocol client nntplib — NNTP protocol client smtplib — SMTP protocol client smtpd — SMTP Server telnetlib — Telnet client uuid — UUID objects according to RFC 4122 socketserver — A framework for network servers http.server — HTTP servers http.cookies — HTTP state management http.cookiejar — Cookie handling for HTTP clients xmlrpc — XMLRPC server and client modules xmlrpc.client — XML-RPC client access xmlrpc.server — Basic XML-RPC servers ipaddress — IPv4/IPv6 manipulation library```Why is there, *specifically*, **in the standard library**, a traceback manager for CGI scripts?

gollark: ```Structured Markup Processing Tools html — HyperText Markup Language support html.parser — Simple HTML and XHTML parser html.entities — Definitions of HTML general entities XML Processing Modules xml.etree.ElementTree — The ElementTree XML API xml.dom — The Document Object Model API xml.dom.minidom — Minimal DOM implementation xml.dom.pulldom — Support for building partial DOM trees xml.sax — Support for SAX2 parsers xml.sax.handler — Base classes for SAX handlers xml.sax.saxutils — SAX Utilities xml.sax.xmlreader — Interface for XML parsers xml.parsers.expat — Fast XML parsing using Expat```... why.

gollark: There is no perfect language.

gollark: ```Internet Data Handling email — An email and MIME handling package json — JSON encoder and decoder mailcap — Mailcap file handling mailbox — Manipulate mailboxes in various formats mimetypes — Map filenames to MIME types base64 — Base16, Base32, Base64, Base85 Data Encodings binhex — Encode and decode binhex4 files binascii — Convert between binary and ASCII quopri — Encode and decode MIME quoted-printable data uu — Encode and decode uuencode files```Mostly should be libraries outside of the python core, and why are they not under file formats?

gollark: ```Concurrent Execution threading — Thread-based parallelism multiprocessing — Process-based parallelism The concurrent package concurrent.futures — Launching parallel tasks subprocess — Subprocess management sched — Event scheduler queue — A synchronized queue class _thread — Low-level threading API _dummy_thread — Drop-in replacement for the _thread module dummy_threading — Drop-in replacement for the threading module```Not THAT bad, since they mostly do different things.

External links

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