HP 700198, 700196 manual New HP disk declassification capability, C2785A Mm rack cab~netfor

Mass Storage

HP Series 6000 HP-FL disk arrays supportedin 1.l-meter cabinet

New HP disk declassification capability

If you are in the aerospace, defense, or electronics industry, you may be

HP Series 6000 HP-F'Ldisk arrays for multiuser systems (P/Ns C2254HA, C2252HA, C2254B, and C2252B) are now supported in

a1.1-meterhigh 19-inch EIA cabinet (P/N C2785A) that can hold up to three disk arrays.

Features and benefits

With 16.3 Gbytes of data-protected storage per 1.1-meter-high cabinet (P/N C2785A) offers space savings. Each cabinet can hold up to three disk arrays with capacities of 2.72 or 5.44 Gbytes per array.

The HP Series 6000 I-IP-F'Ldisk arrays will continue to be supported in the 1.6-meter-high cabinet

(P/N C2786A), which can hold up to five disk arrays.

AU disk array shipments include a rackmounting kit and front bezel for the product number C2786A or C2785A cabinets and a power cord to connect to the power distribution unit.

Maximum current draw per disk array should read 4 amps at 120 volt and 2 amps at 230 volt. Arrays in the 1.1-meter cabinet will operate with 240 or 120 volt. Arrays in the l.&meter cabinet (P/N C2786A) operate with 240 volt.

Hewlett-Packard has only tested disk arrays in the 1.6- and 1.1-meter

cabinets. Other devices that are normally supported in these cabinets may be racked with the arrays as long as the total current draw of the equipment does

not exceed the 16-amp rating.

A Hewlett-Packard representative should review these types of configurations for supportability.

No,
C2785A	1,100-mm rack cab~netfor '
	HP computer systems; rack is
	19-inch EIA width, has 21 EIA
	units of racking space, solid top,
	and three 1-EIA-unit-high filler
	panels; requires localization
	option
Opt. 1FA	Adds extractor fan; top-mounted
	extractor fan unit compatible
	with PDU voltage; substitutes
	vented top for standard solid top;
	this option is required for disk
	arrays
Opt. ABA	U.S. localization option provides
	a 1001120-volt 16-amp power
	distribution unit with six IEC-320
	receptacles and a 20-amp input
	power cord terminated with a
	nonlocking 5-20P plug
Opt. ABB	International localization option
	provides a 2001240-volt 16-amp
	power distribution unit with six
	IEC-320 receptacles and a 20-
	amp unterminated power cord
Opt. OE3	Substitutes a 2001240-volt PDU
	for U.S. users when ordered with
	Opt. ABA; PDU is 16 amp and has
	six IEC-320 receptacles and a
	20-amp input power cord
	terminated with a locking L6-20P
	P ~ U Q
Opt. IF9	Rackmount filler panels; includes
	six 1-EIA unit-high molded
	plastic filler panels

concerned with information left on magnetic medla after it has been erased, a problem h o w n as magnetic remanence. This problem typically occurs when you want to move a disk from one location or project to another.

One method to solve this problem has been outlined by the U.S. Defense Investigative Service(DIS) and is contained in a document called Department of Defense Magnetic Remanence Security

Guideline. T ~ guidelineE specifies that the disk medla be overwritten 'n' times with a specified bit pattern. Although thLsrequirement is not new, an approval process is now required stating that the erasure procedures meet DIS requirements.

The DIS recently approved the Hewlett-Packard procedure for declasslfylng HP disks. Hewlett-Packard'ssoftware utility for declassification is supported only on I-IP-manufacturedsingle- ended small computerstandard interface (SCSI) 3%-and 5%-inch form factor disk mechanisms.

Included are both bullt-in mechan- isms and mass storage solutions containing those SCSI mechanisms. Because the software uses several Hewlett-Packard unique SCSI diagnostic commands to perform

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HP Con~puterUpdate, March 1992 17