Member Avatar for veledrom

Hi,

I bough a CD+RW Optical drive. I cannot find information about what SATA it is. Is it SATA 2 or SATA 3?

Thanks

LG GH22NS50.AUAA 22x SATA DVDRW Drive

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Short answer: your LG GH22NS50 is a SATA optical drive that negotiates at 1.5 Gbps (often called SATA Gen1). Retail listings that still carry the model explicitly note “SATA (1.5Gb/s),” and LG’s own support page lists only “SATA interface” (no SATA II/III branding), which is typical for optical drives from this era. (pcmall.bg)

As suspected, manufacturers rarely market DVD writers as “SATA 2/3” because the drive itself never gets close to needing that bandwidth. At 16x DVD read, LG rates this model at about 22 MB/s, which is far below the 150 MB/s ceiling of SATA 1.5 Gbps. In practice, what said holds: you can plug it into any SATA port and you won’t see a performance difference on this class of device. (lg.com)

If you want to confirm the negotiated link speed on your own system, a quick Linux check will show it per port:

dmesg | grep -i "SATA link up"
# Example output:
# ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)

That “1.5 Gbps” is the active link rate for the port the drive is on. (cyberciti.biz)

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Member Avatar for rubberman

You can use any sata drive in any sata port, where the LCD (lowest common denominator) rules. IE, a sata-1 drive in a sata-3 port will run at sata-1 speeds. Obviously, for best performance (drive read/write hardware notwithstanding) you should match the drive with the port controller; however, since it is likely that even a sata-1 interconnect will exceed the read/write speeds of most any CD/DVD drive, I'd have to advise not to worry about it!

Member Avatar for rubberman

This is the important sentence on the first link that caperjack gave: The designers of SATA aimed for backward and forward compatibility with future revisions of the SATA standard.

IE, it confirms what I said about all sata devices no matter their version, will work with any sata controller and port. AFAIK, the cables are all identical. I have sata-1 and sata-2 controllers and ports in my computer, and sata-1 and sata-2 devices (including RAID-5 arrays) connected to both.

Member Avatar for caperjack

rubberman,i think maybe we both miss the point of the question ,i think poster just wants to know if his/her's is sata 2 or 3 not really concerned with backward compatibility ,maybe !

Edited by caperjack because: n/a
Member Avatar for veledrom

Exactly. That's what I meant.

Member Avatar for caperjack

Exactly. That's what I meant.

when i google i find nothing on dvd sata 2 or 3 .leading me to believe that there is no such thing as a sata2 or 3 optical drive ,just harddrives ,i think its just sata,also read where on some sata2- sata3 controllers an optical sata drive will not even function ,
in the first link on this google search .
http://www.google.ca/search?q=sata3+optical+dvd+&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

Edited by caperjack because: n/a
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