Back-up systems: Protecting your data
By Carol L. Schlein
For at
least the past 20 years, tape-based backup systems have been
the way to copy critical information from computers to take
offsite. Now, this technology is starting to get some
competition that’s worth examining.
Tape
backup systems are reliable and most are sold along with
backup software that can be programmed to copy all files
during the middle of the night. The tape drive can be built
into the server or computer on which files are being stored.
When configuring a tape drive, it’s best to purchase one
that can back up an entire server’s hard drive in a single
pass on a single tape. That way, if the backup is scheduled
overnight, no one need be in the office to swap tapes when
the first one is full. Depending on the drive’s capacity,
tapes can cost up to $30 each.
The
tape backup software should be configured to notify the
firm’s administrator (or equivalent responsible person) that
the backup was successfully completed. Most such software
cannot make copies of programs that have been left open.
Firms using Microsoft-SQL-based applications, which include
many billing and case management programs, either must set
up their SQL applications to make disk based backups that
get copied to tape, or purchase more expensive versions of
backup software that will include SQL data files.
Tape
based backup systems suffer from several weaknesses. The
tape drive must be cleaned to ensure reliable copies over
time and the tapes themselves should be replaced. Most
vendors suggest purchasing at least 10 tapes so they can be
alternated over a two-week period. Relying on one person to
regularly substitute the day’s tape is one limit of such
backups.
The
other big issue is many firms’ failure to regularly move
recent tapes offsite. While New Jersey has been spared the
brunt of hurricanes and earthquakes, we’ve had our share of
floods, fires and other disasters. Changing tapes daily is
important, but taking them offsite is even more critical.
The increase in home based offices creates another challenge
as there is no alternative location for the tapes. Ideally,
the offsite location should be far enough from the office
that it wouldn’t sustain the same disaster.
In the
event you can’t return to your office for an extended time,
you’ll also need a copy of the backup software and the
ability to purchase a compatible tape drive to restore the
data onto a temporary or new permanent server.
Copy
applications
In
addition to copying data, I’ve always recommended regularly
backing up critical applications with tools built into the
programs. For billing and practice management systems, it’s
a good idea to use these tools daily. Some programs
automatically name those files by the weekday, so a backup
made on a Tuesday will be written over the next Tuesday. If
your software doesn’t do that, consider changing the names
of the backups so there are multiple versions of data stored
on the server. These files, in turn, also will be on the
backup tapes, providing more options from which to restore,
if necessary.
These
backup systems, while relatively inexpensive (compared to
recreating data from scratch) rely on human intervention to
ensure they’re working properly. That requires the entire
staff close their applications each night and someone
changes tapes each day, taking the last one offsite and
returning it when needed.
Server
hard drives get larger each year. A typical server four
years ago might have had 18GB drives. Today, a similar
server will have 80GB, requiring a larger tape to back up
the entire system. If using a computer intended as a server,
it probably has a second drive making a copy of everything,
so should the first drive fail, the second automatically
takes over.
Updated
advice
Years
ago, the standard advice was to back up the entire system to
allow the entire tape to be easily restored onto a new
server, if needed. On a practical level, this doesn’t work
as well as it used to. Before Microsoft Windows took off,
the files needed to restore most applications were located
in their own program folders. With recent versions of
Windows, a typical program will have files in its own
program file as well as in the Windows system folder and
internally in the registry.
As a
result, unless you’re using a program like Norton’s Ghost,
which makes a more complete copy of applications, you cannot
— and generally should not — restore an application from a
tape. To be clear, tapes are suitable for storing documents
and data from important applications but may be more limited
in restoring the programs used to access those files. It’s
important to keep original program disks with their
installation information in a safe place. One option is to
make a backup copy of the program CDs; depending on the
software, though, this may not always work.
Part
of the backup strategy should include the assumption that if
you’re starting on a new server (this also would be true for
upgrades), you will reinstall all the software, then
transfer the data and files separately. This is where some
of the newer options for backups may be suitable.
Newer
backups
While
server hard drives have gotten bigger, the prices of DVD
writers and removable hard drives have dropped. A USB hard
drive with 60GB or more storage starts around $125 and
includes software for making backups that can easily be
moved elsewhere.
Similarly, DVD drives offer an easy way to back up data that
can be taken offsite. Data DVDs hold more information than
their CD cousins. While CD disks hold 650MB, the typical DVD
holds 4.7GB, a substantial increase. The drawbacks of DVDs
are that standards are not fully developed so DVDs created
in one drive may not work in another, and the time to burn a
DVD can be longer than desired and slow the computer while
data is copied.
The
new kid on the backup block is internet based, which wasn’t
practical during the years of dialup access. But as firms
have migrated to high-speed access, the prospect of copying
critical data from the server to a remote location becomes
appealing.
Vendors range from startups to divisions of well established
companies. Among those to consider are: I-backup (ibackup.org),
Evault (evault.com),
LiveVault (usdatatrust.com),
Data Protection Services, (dataprotection.com),
NetMass (systemrestore.com),
ESureIt (intronis.com)
and Swap-drive (swapdrive.com).
An internet search for “internet backup” will yield even
more vendors.
Those
tools vary in terms of their ease of navigation. Prices
still seem astronomical when compared to more traditional
backup systems. Typical of the offerings is Ibackup, which
offers several levels of protection. At the low end, about
$100 per year will store 5GB on its server; 10GB costs $200.
An additional level of security called “snapshots” offers
10GB for $350. This option allows users to look back over a
10day period when choosing what data to restore as well as
enable them to include SQL or open files as part of the
backup. Ibackup seems more reasonably priced than many
competitors.
Choosing
the data
Those
who have servers with a 30GB hard drive must be choosy about
what data to backup online. Depending on how the firm does
e-mail and what tools are being used, there could be
valuable address books and files on individual computers
that aren’t backed up anywhere. Online solutions do
incremental backups so they aren’t copying the same document
each night unless it’s been changed. They can be set to copy
at a scheduled time and offer peace of mind.
One
important consideration is whether these companies will be
around for the long haul and whether you’re comfortable
having your data in cyberspace. While encryption and
password protection are included, the companies also must
have the financial means to stay in business so they’re
around when you need your data. Whichever company you
choose, you must carefully select what data to back up
remotely since the cost jumps with each gigabyte.
Whatever option, be sure to make regular backups part of
your daily routine. If something goes wrong, you want as
many options from which to choose.
Carol L. Schlein is president of Law Office Systems in Montclair, a
training and consulting firm specializing in law firm
automation. Copies of previous columns are on her company
website, www.losinc.com.
For information about her quarterly meetings for Time Matters
users, check the website or e-mail
info@losinc.com. Schlein
formerly chaired the Computer and Technology Division of the
ABA Law Practice Management Section.
Questions for Carol L. Schlein on law office technology may be
faxed to New Jersey Lawyer at (732) 650-7010, e-mailed to
news@njlnews.com or
mailed to “Law Technology Questions,” New Jersey Lawyer,
Edison Square, 2035 Lincoln Highway, Suite 3005, Edison, N.J.
08817. |