ISS was an independent company in the era (late 60s) of the 714 (IBM 2314 compatible). It was later acquired by Itel (a leasing company) and then by Univac and sort of disappeared in the 80s. Depending upon your application almost any plug compatible 2314 might work or could be made to work. The interfaces were very much 2314 like except the PCMs and OEMs didn't use IBMs +/- 1.5v signaling levels on the interface but instead used DTL driver/receiver signaling. There was also some weirdness in the power sequencing all of which can be worked around if u are up to it. Tom -----Original Message----- From: ED SHARPE [mailto:couryhouse at aol.com] Sent: Monday, April 22, 2019 11:37 AM To: cctalk at classiccmp.org; aek at bitsavers.org Subject: Re: Telex 20 Meg 10 platter very heavy monster drive needed drop line off list..r Thanks Al yes, that is the one. and as I recall ISS was a offshoot on univac Do you have any? Thanks Ed# In a message dated 4/22/2019 11:34:58 AM US Mountain Standard Time, cctalk at classiccmp.org writes: Thanks Al yes, that is the one. and as I recall ISS was a offshoot on univac?In a message dated 4/22/2019 11:21:50 AM US Mountain Standard Time, cctalk at classiccmp.org writes: On 4/22/19 11:05 AM, ED SHARPE wrote:> Al, the drive you mention at its largest was 7.5 meg and 6 platters... not the one Telex bought their drives from ISS.You're looking for a ISS 714 (ca. 1970) 2314 compat.https://ia800608.us.archive.org/15/items/TNM_Information_Storage_Sys… aek at bitsavers.org;cctalk